Dr. Rene Castillo, MD

Dr. Rene Castillo, MD

Medical OncologyMaleAge 63

Medical Oncology

Dr. Rene Castillo, MD is a Medical Oncology Specialist in San Marcos, TX and has over 35 years of experience in the medical field. He graduated from Universidad De La Salle, Facultad Mexicana De Medicina in 1987. He is affiliated with medical facilities such as Heart Hospital of Austin and St. David's North Austin Medical Center. His office accepts new patients and telehealth appointments.

Office Hours

1308 Wonder World Dr San Marcos, TX 78666

Fri

Office
closed

Sat

Office
closed

Sun

Office
closed

Mon

8:30 am
to
5 pm

Tue

8:30 am
to
5 pm

Wed

8:30 am
to
5 pm

Thu

8:30 am
to
5 pm
Connect with a call center representative 24/7 to request an appointment.

Locations

Texas Oncology - San Marcos

San Marcos1308 Wonder World Dr San Marcos, TX 78666
1
  • Call
  • Fax
  • Hours
    • Mon: 8:30am - 5:00pm
    • Tue: 8:30am - 5:00pm
    • Wed: 8:30am - 5:00pm
    • Thu: 8:30am - 5:00pm
    • Fri: closed
    • Sat: closed
    • Sun: closed
  • Directions

Texas Oncology - South Austin

Texas Oncology - South Austin4101 James Casey St Ste 100 Austin, TX 78745
2
  • Call
  • Fax
  • Hours
    • Mon: 8:30am - 5:30pm
    • Tue: 8:30am - 5:30pm
    • Wed: 8:30am - 5:30pm
    • Thu: 8:30am - 5:30pm
    • Fri: closed
    • Sat: closed
    • Sun: closed
  • Directions

Hospital Highlight

Dr. Castillo is affiliated with St. David's North Austin Medical Center Austin, a highly rated hospital.

At a Glance

  • Explains Conditions Well Patients said this doctor explains conditions well. See reviews
  • Offers Telehealth This provider offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital America's 250 Best Hospitals Award™ See hospitals

Dr. Castillo's Reviews

Likelihood to recommend Dr. Castillo

4.8

Based on 102 ratings

5 Stars
91.17647058823529%
(93)
4 Stars
4.901960784313726%
(5)
3 Stars
0%
(0)
2 Stars
0.9803921568627451%
(1)
1 Star
2.9411764705882355%
(3)
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Dr. Castillo
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RecentHighestLowestMost Helpful
Reply
Dr. Castillo
Every visit I have ever had with Dr, Castillo has been the very best. He noticed the last visit that My arms, face and chest were very red. I had been worried about this before I saw him. I had brought it up to m y general doctor, who blew it off. This is just one instance through the years that he has picked up on. He explains things very clearly. He checks everything and is such an easy person to talk with. I see lots of different specialists, and doctors, none of them are as intelligent, thorough and upfront with me. I feel refreshed and like I have been to my counselor and specialist over my entire body when I leave his office. He is such a sincere person and professional. I am so glad he is in charge of my health. I cannot say enough positive about him. Everyone should have Dr. Castillo in their life. I wish there were more doctors and people in general like him. Thank you Dr. Castillo for helping me with so many aspects of my life, and getting me healthier.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Janet Harms – Aug 04, 2022
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Reply
Well taken care of
Dr. Castillo has taken care of me for a few years now with my issues and has always been very kind and knowledgeable. Everyone at the office has been wonderful to work with and I feel very well taken care of at all my appointments with them. Thank you so much.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
CJ – Jul 28, 2022
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Reply
Caring, friendly, takes his time
I go in every 6 months for check up and bloodwork. Dr. Castillo is ALWAYS in a good mood and seems truly happy to see me, his patient. He is kind and takes his time to answer any questions that I may have.
What went well
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
What could be improved
No results
Helpful
Teri – Jul 25, 2022
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Reply
Dr. Castillo is caring and understanding. Explains and goes over everything.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Jul 25, 2022
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Reply
My wife has been going to Dr. Castillo for many years and she has always received excellent care. We would recommend Dr. Castillo to anyone that is dealing with cancer.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Jul 22, 2022
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Reply
Great bedside manner
Dr. Castillo is incredibly caring and kind as well as his entire team. He is extremely personable and you can tell he really cares about your care.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Nicole – Jul 22, 2022
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Reply
I am so happy I was able to get in with Dr Castillo when I started my cancer treatment. He is caring, concerned and always on top of things.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Alice – Jul 22, 2022
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Reply
Dr. Castillo is very nice. He is professional and caring. Never have I had a long waiting time.
What went well
  • Office environment
  • Explained conditions well
What could be improved
No results
Helpful
G Wigmore – Jun 23, 2022
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Reply
Excellent Physician
I have been very In all my interactions with Dr. Castillo and his medical and office staff. Never an excessive wait time and great attention is paid to my physical well-being.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Jim Irvin – Jun 21, 2022
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Reply
Always have been very pleased with Dr. Castillo and his staff
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Rose – Jun 19, 2022
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Reply
Dr. Castillo
I have been very pleased with the service I have received through Dr. Castillo. My only complaint to date is that I sent Dr. Castillo a question through the Texas Oncology portal and have never gotten a reply? So I do question the use of the portal for communication?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Scotty Garrett – Jun 16, 2022
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Reply
Prompt, courteous, listened to me and gave good advice
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Thomas Lindsay Brown – May 24, 2022
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Reply
Dr. Rene Castillo has been my oncologist for many years now and I have always been pleased with the care he has given me. He is a good listener and answers all my questions to my satisfaction. I am happy to have Dr. Castillo as my doctor.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
May 23, 2022
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Reply
Too long wait in Lobby and also exam room. I get too anxious and the next time I will walk out.
What went well
  • Appointment scheduling
  • Staff friendliness
  • Listened & answered questions
  • Trusted the provider's decisions
What could be improved
  • Long wait times
1 person found this helpful
Helpful
Bernadette Adams – May 21, 2022
Thank you for bringing this issue to our...Read More
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Reply
Dr. Castillo is a deeply caring, compassionate, knowledgeable doctor. Couldn't have had a better doctor guiding me through cancer treatments and into remission
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
1 person found this helpful
Helpful
Patricia Smith – Apr 18, 2022
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Reply
Friendly and professional
Mar.4,’22: Reviewed labs, decided next steps / appts. Thorough and friendly as always.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Helpful
Apr 14, 2022
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Reply
Dr. Castillo was very thorough and made me very comfortable. As a new patient I felt relaxes immediately.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
JOYCE FALKO – Apr 08, 2022
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Reply
Dr. Castillo has a very good bedside manner while conducting my visits thoroughly, caring & with great positivity & confidence. Always, after my visits, I feel better & uplifted about my health. To me, this is every bit as important as medication, etc.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Manoucher Homayoun – Mar 17, 2022
We are happy to hear you had such a positive...Read More
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Reply
Dr. Rene Castillo is an exceptional Oncologist and he is kind and caring. Because of Dr. Castillo, I am less afraid of my Leukopenia diagnosis. I trust Dr Castillo will do his best for me to stay healthy and have a good quality of life. Sincerely, Alicia H. Nieto
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Mar 17, 2022
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Reply
Great doctor
Have seen Dr. Castillo three or four times. Always a good listener and good at providing advice and guidance. Los of faith in him.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Greg Lamb – Mar 17, 2022
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Experience and Background Checks

Experience
Background

Background Check

No malpractice claims found for Texas
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Experience Check

Check Dr. Castillo's experience treating your condition or procedure

Dr. Castillo's Top Procedures and Conditions

Treatment Frequency
Anemia
very high
very high

Treatment Frequency

Dr. Castillo treats Anemia more than 99% of his peers

Dr. Castillo treats this condition more than 99% of his peers

Rating Includes other areas of care:

  • Acquired Aplastic Anemia
  • Anemia of Pregnancy
  • Aplastic Anemia
  • Atypical Hemolytic Uremic Syndrome
  • Autoimmune Hemolytic Anemia (AIHA)
  • Chronic Anemia
  • Cold Autoimmune Hemolytic Anemia
  • D-Negative Hemolytic Uremic Syndrome (D - HUS)
  • D-Negative Hemolytic Uremic Syndrome, Pregnancy Related
  • D-Positive Hemolytic Uremic Syndrome (D + HUS)
  • Diamond-Blackfan Anemia
  • Hemolytic Anemia, Acquired Autoimmune
  • Hemolytic Uremic Syndrome
  • Hereditary Spherocytosis
  • Iron Deficiency Anemia
  • Megaloblastic Anemia
  • Microcytic Hypochromic Anemia
  • Myelpathic Anemia
  • Neonatal Anemia
  • Nutritional Anemia
  • Nutritional Sideroblastic Anemia
  • Pernicious Anemia
  • Refractory Anemia With Excess Blasts
  • Refractory Anemia With Excess Blasts-1
  • Refractory Anemia With Excess Blasts-2
  • Secondary Cold Autoimmune Hemolytic Anemia
  • Sideroblastic Anemia
  • Sideroblastic Anemia With Spinocerebellar Ataxia
  • Sideroblastic Anemia, Pyridoxine-Responsive, Autosomal Recessive
  • Warm Autoimmune Hemolytic Anemia
Hide other areas of care
Vitamin B12 Deficiency
very high
very high

Treatment Frequency

Dr. Castillo treats Vitamin B12 Deficiency more than 96% of his peers

Dr. Castillo treats this condition more than 96% of his peers

Deep Vein Thrombosis (DVT)
high
high

Treatment Frequency

Dr. Castillo treats Deep Vein Thrombosis (DVT) more than 90% of his peers

Dr. Castillo treats this condition more than 90% of his peers

Dr. Castillo's conditions and procedures:

  • Acute Leukemia
  • Acute Lymphoid Leukemia
  • Acute Myeloid Leukemia
  • Adrenal Gland Cancer
  • All Lymphoma
  • Anal and Rectal Cancer
  • Anal Disorders
  • Anemia
  • Anemia and Iron Deficiency Screening
  • Antiphospholipid Syndrome (APS)
  • Autoimmune Diseases
  • Bile Duct Cancer
  • Bladder Cancer
  • Bleeding Disorders
  • Blood Disorders
  • Bone Cancer
  • Bone Disorders
  • Bone Marrow Biopsy
  • Brain and Nervous System Cancer (incl. Gliomas, Astrocytoma, Schwannoma, Medulloblastoma, Chordoma)
  • Brain Cancer
  • Brain Disorders
  • Breast Cancer
  • Breast Diseases
  • Burkitt's Lymphoma
  • Cancer
  • Central Nervous System Lymphoma
  • Cervical Cancer
  • Cholangiocarcinoma
  • Chronic Lymphocytic Leukemia
  • Chronic Myeloid Leukemia (CML)
  • Coagulation Disorders (incl. Hemophilia)
  • Colorectal Cancer
  • Deep Vein Thrombosis (DVT)
  • ENT Cancer
  • Erythropoietin Test
  • Esophageal Cancer
  • Esophageal Diseases
  • Fallopian Tube Cancer
  • Gallbladder and Biliary Tract Cancer
  • Gallbladder Cancer
  • Gastrointestinal Diseases
  • Gynecologic Cancer
  • Head and Neck Cancer
  • Hodgkin's Disease
  • Hypercoagulable State
  • Immune Thrombocytopenic Purpura (ITP)
  • Kidney Cancer
  • Laryngeal Cancer
  • Leukocytosis
  • Liver Cancer
  • Lung Cancer
  • Lymphocytosis
  • Lymphosarcoma
  • Macroglobulinemia (incl. Waldenstrom's )
  • Marginal Zone Lymphoma
  • Mediastinal Tumors, Malignant
  • Melanoma
  • Merkel Cell Carcinoma
  • Multiple Myeloma
  • Mycosis Fungoides
  • Myelodysplastic Syndromes
  • Myeloma
  • Myeloproliferative Disorders
  • Neuroendocrine Tumors
  • Neutropenia
  • Nodular Lymphoma
  • Non-Hodgkin's Lymphoma
  • Oral Cancer
  • Osteosarcoma
  • Ovarian Cancer
  • Pancreatic Cancer
  • Pancytopenia
  • Pleural Cancer
  • Polycythemia Rubra Vera
  • Pregnancy-Related Disorders
  • Primary Central Nervous System Lymphoma
  • Primary Hypercoagulable State (incl. Factor V Leiden Disease)
  • Prostate Cancer
  • Pulmonary Disease
  • Purpura
  • Secondary Malignancies
  • Sickle Cell Disease
  • Skin Cancer
  • Small Intestine Cancer
  • Soft Tissue Sarcoma
  • Squamous Cell Carcinoma
  • Stomach and Small Intestine Cancer
  • Stomach Diseases
  • Testicular Cancer
  • Thalassemia
  • Throat Cancer (Nasopharyngeal)
  • Throat Cancer (Oropharyngeal)
  • Thrombocytosis
  • Thrombosis
  • Thymomas
  • Thyroid Cancer
  • Tongue Cancer
  • Tonsil Cancer
  • Urinary Disorders
  • Uterine Cancer
  • Vascular Disease
  • Venous Embolism and Thrombosis
  • Vertebral Column Tumors
  • Vitamin B Deficiency
  • Vitamin B12 Deficiency
  • von Willebrand Disease
  • Vulvar Cancer

Insurance Check

Search for your insurance provider

Dr. Castillo accepts

Accepted insurance can change. Please double-check when making an appointment.

(737) 276-3880

Dr. Castillo accepts the following insurance:

Aetna
Aetna HMO
Choice Plus POS II
Ambetter
Superior Health Plan
American Republic
Amerigroup (Wellpoint)
Anthem
National (BlueCard) PPO
Assurant Health
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of Texas
Blue Advantage HMO
Blue Choice
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
CHAMPVA
Cigna
Cigna HMO
Cigna PPO
Great West Healthcare-Cigna PPO
LocalPlus
Open Access Plus
Commercial Insurance Company
EBS-RMSCO
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Golden Rule
Group Health Cooperative (GHC)
Group Health Cooperative
HealthFirst
Humana
Medicaid
Meritain Health
MultiPlan
MultiPlan PPO
PHCS Network PPO
MVP Health Care
NGS CoreSource
Tricare
UnitedHealthCare
Choice Plus POS
Navigate HMO
Navigate POS
Options PPO
United Healthcare

About Me

Care Philosophy

To provide excellent, evidence based care for each patient we serve, while advancing cancer care for tomorrow.

Biography

Texas Oncology is an independent private practice with more than 500 physicians and 210 locations across the state. Meeting the oncology needs of Texans...Read more

Specialties

  • Medical Oncology
  • Hematology
  • Oncology

Board Certifications

Education

Fellowship in Hematology/Medical Oncology - Cornell Medical Center
Fellowship Hospital
New York Hospital-Cornell Medical Center
Fellowship Hospital
Ny And Presby Hp Cornell Campus
Residency Hospital
St Luke's Roosevelt Hsp Center
Residency Hospital
St. Lukes/Roosevelt Hospital Center | Dr. Manuel Gea Gonzales General Hopsital
Internship Hospital
Universidad La Salle Medical School
Medical School
1987
Universidad De La Salle, Facultad Mexicana De Medicina
Medical School
Louisiana State Univ
Undergraduate School
,

Languages

  • English
  • Spanish

Awards

Frequently Asked Questions

How can I make an appointment with Dr. Rene Castillo, MD?

Call (737) 276-3880 to make an appointment as a new patient. Click here for more information.

Does Dr. Rene Castillo, MD offer telehealth services?

Dr. Castillo has indicated that they offer telehealth. Contact the office to check for eligibility for your needs.

Is Dr. Rene Castillo, MD accepting new patients?

Dr. Rene Castillo, MD generally accepts new patients on Healthgrades. You can see Dr. Castillo's profile to make an appointment.

Does Dr. Rene Castillo, MD accept my insurance?

Use the Healthgrades insurance check to verify if Dr. Castillo accepts your insurance.

What are Dr. Rene Castillo, MD's top areas of care?

Dr. Castillo frequently treats Anemia, Vitamin B12 Deficiency, and Deep Vein Thrombosis (DVT). See all procedures and conditions Dr. Castillo treats.

Where is Dr. Rene Castillo, MD's office located?

Dr. Castillo's office is located at 1308 Wonder World Dr, San Marcos, TX 78666. Find other locations and directions on Healthgrades.

What languages does Dr. Rene Castillo, MD speak?

Dr. Castillo speaks Spanish and English. View profile to see all.

Affiliated Hospitals

Dr. Castillo is affiliated with the following hospitals. Select a hospital below to learn more.

Learn more about how Healthgrades measuresHospital Quality.

Heart Hospital of Austin

Austin, TX

22 Awards Received

Award Highlight: Patient Safety Excellence Award™ (2021)

St. David's North Austin Medical Center

Austin, TX

77% Patients that would definitely recommend, 7% higher than the national average

12 Awards Received

Award Highlight: Patient Safety Excellence Award™ (2022)

St. David's South Austin Medical Center

Austin, TX

77% Patients that would definitely recommend, 7% higher than the national average

16 Awards Received

Award Highlight: Patient Safety Excellence Award™ (2022)

Ascension Seton Medical Center Austin

Austin, TX

71% Patients that would definitely recommend, 1% higher than the national average

1 Award Received

CHRISTUS Santa Rosa Hospital - San Marcos

San Marcos, TX

70% Patients that would definitely recommend, Equal to the national average