Dr. James Tomas, MD

NephrologyMaleAge 44

Nephrology

Dr. James Tomas, MD is a Nephrology Specialist in San Bernardino, CA and has over 13 years of experience in the medical field. He graduated from Ross University / School of Medicine & Veterinary Medicine in 2009. He is affiliated with medical facilities such as Community Hospital Of San Bernardino and Redlands Community Hospital. His office accepts new patients.

Dr. James Tomas, MD

Nephrology Associates Med Grp

401 E Highland Ave Ste 551 San Bernardino, CA 92404
Accepting new patients

Make an Appointment

(909) 328-6396

Accepting new patients

At a Glance

  • Explains Conditions Well
    Patients said this doctor explains conditions well. See reviews
  • Hospital Satisfaction
    Patients said they were highly satisfied at this doctor's hospital. See hospitals
  • Trustworthy
    Patients said this doctor is trustworthy. See reviews
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Experience and Background Checks

Experience
Background

Background Check

No malpractice claims found for California
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. Tomas' experience treating your condition or procedure

Dr. Tomas' Top Procedures and Conditions

Treatment Frequency
Acidosis
very high
very high

Treatment Frequency

Dr. Tomas treats Acidosis more than 100% of his peers

Dr. Tomas treats this condition more than 100% of his peers

Acute Kidney Failure
very high
very high

Treatment Frequency

Dr. Tomas treats Acute Kidney Failure more than 96% of his peers

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

Hyperkalemia
very high
very high

Treatment Frequency

Dr. Tomas treats Hyperkalemia more than 96% of his peers

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

Dr. Tomas' conditions and procedures:

  • Acidosis
  • Acute Kidney Failure
  • Alkalosis
  • Calcium Metabolism Disorders
  • Chronic Kidney Diseases
  • Congenital Cystic Kidney Disease
  • Congenital Polycystic Kidney Disease
  • Dehydration
  • Diabetes With Renal Manifestations
  • End-Stage Renal Disease
  • Gout
  • Hemodialysis
  • Hydronephrosis
  • Hypercalcemia
  • Hyperkalemia
  • Hypertension
  • Hypertensive Chronic Kidney Disease
  • Hypertensive Heart and Chronic Kidney Disease
  • Hypokalemia
  • Hypotension (Excluding Maternal)
  • Kidney Stones
  • Kidney Transplant Evaluation
  • Limb Swelling Caused by Fluid Overload
  • Living Kidney Donor Evaluation
  • Magnesium Metabolism Disorders
  • Mineral Metabolism Disorders
  • Nephritis and Nephropathy
  • Nephrotic Syndrome
  • Parathyroid (Gland) Disease
  • Peritoneal Dialysis
  • Phosphorus Metabolism Disorders
  • Proteinuria
  • Renal Hyperparathyroidism
  • Renal Osteodystrophy
  • Renal Scan
  • Ultrasound, Kidney
  • Vitamin D Deficiency

Insurance Check

Search for your insurance provider

Dr. Tomas accepts

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

(909) 328-6396

Dr. Tomas accepts the following insurance:

Aetna
Aetna HMO
Basic HMO
Choice Plus POS II
Anthem
Advantage-CA HMO
Advantage-CA PPO
Blue Cross (CACare) - Individual-CA HMO
Blue Cross (CACare) - Large Group-CA HMO
Blue Cross (CACare) - Small Group-CA HMO
Blue Cross (Prudent Buyer) - Individual-CA PPO
Blue Cross (Prudent Buyer) - Large Group-CA PPO
Blue Cross (Prudent Buyer) - Small Group-CA PPO
Blue Cross (Prudent Buyer) - Student Health-CA PPO
Blue Cross-CA HMO-POS
Bronze EPO (Prudent Buyer / Small Grp)-CA PPO
Bronze EPO (Prudent Buyer EPO/ Small Grp)-CA
Bronze Select (Select PPO/ Small Grp)-CA PPO
Bronze Select w/ H.S.A (Select PPO/ Small Grp)-CA PPO
Bronze w/ H.S.A (Prudent Buyer PPO/Small Grp)-CA PPO
Dignity Health Custom Advantage-CA HMO
Dignity Health EPO / PPO-CA
Dignity Health Ventura EPO/PPO-CA
EPO-CA
Gold (CaliforniaCare HMO/ Small Grp) HMO
Gold (Prudent Buyer PPO/ Small Grp)-CA PPO
Gold Advantage-CA PPO
Gold EPO (Prudent Buyer / Small Grp)-CA PPO
Gold EPO (Prudent Buyer EPO/ Small Grp)-CA
Gold Select (Select / Small Grp)-CA HMO
Gold Select (Select PPO/ Small Grp)-CA PPO
Lumenos Plans-CA PPO
Major Risk Medical Insurance Program (MRMIP) - Prudent Buyer-CA PPO
MemorialCare Custom-CA PPO
National (BlueCard Basic) PPO
National (BlueCard) PPO
PERS Select-CA HMO
PERS Traditional-CA HMO
Platinum (CaliforniaCare HMO/ Small Grp) HMO
Platinum (Prudent Buyer PPO/ Small Grp)-CA PPO
Platinum Select (Select / Small Grp)-CA HMO
Platinum Select (Select PPO/ Small Grp)-CA PPO
Priority Select-CA HMO
Select (PERS Select Providers)-CA PPO
Select Plus-CA HMO
Select-CA HMO
Select-CA PPO
Silver (CaliforniaCare HMO/ Small Grp) HMO
Silver Advantage-CA PPO
Silver EPO (Prudent Buyer EPO/ Small Grp)-CA
Silver EPO w/ H.S.A (Prudent Buyer/Small Grp)-CA PPO
Silver Select (Select / Small Grp)-CA HMO
Silver Select (Select PPO/ Small Grp)-CA PPO
Silver Select w/ H.S.A (Select PPO/ Small Grp)-CA PPO
Silver w/ H.S.A (Prudent Buyer PPO/Small Grp)-CA PPO
Tenet Network-CA PPO
Traditional
Traditional PPO
UC Care-CA PPO
UC CORE-CA PPO
UC Health Savings Plan-CA
UC High Option Supplement to Medicare-CA
UC Medicare with Prescription Drugs-CA PPO
UC Medicare without Prescription Drugs-CA PPO
UC Resident and Fellows-CA PPO
UCSHIP-CA PPO
USC Plan (Two Tiered Network)-CA HMO
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of California
Advantage Preferred DirectAccess Plus PPO
Priority Select HMO
Select Plus HMO
Select PPO
Blue Shield of California
Access Plus Savenet
Local Access Plus HMO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna
Cigna HMO

Dr. Tomas' Reviews

What went well
No reviews yet
What could be improved
No reviews yet

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RecentHighestLowestMost Helpful
Reply
I find his manner calming and informative
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
Dee Nettleton in Beaumont, CA – Oct 02, 2019
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Reply
Best doctor I have been seeing him for years and he is my favorite 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
Ce in Beau – Oct 02, 2019
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Reply
Office staff is nice and the doctor is very attentive
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
No results
Helpful
Enrique morales in Highland – Sep 27, 2019
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Reply
Dr. Tomas has wonderful bedside manner. He's very comforting.
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
No results
Helpful
Lauri Pond – Sep 25, 2019
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Reply
Great
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
No results
Helpful
Mark Espinosa in Redlands, CA – Aug 09, 2019
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Reply
Excellent
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
No results
Helpful
Patricia Go in Banning, CA – Feb 28, 2019
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Reply
Hard toget ahold of when needed by other doctors for other reasons. And prescriptions
What went well
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Difficult to schedule appointment
  • Long wait times
Helpful
Michael hopkins in Landers, CA – Oct 24, 2018
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Reply
He was kind really explained things to me has game plan
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
Shirley merwitz in Yucaipa, CA – Jul 24, 2018
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Reply
Amazing bedside manners! Explained everything well & went into detail on diagnosis, symptoms, side affects & treatment. Gave scenarios which I a definitely appreciated.
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
Gabriela H in Rialto,Ca – May 25, 2018
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Reply
He is very thorough and infomative. Answers all my questions that I understand. Very pleased with dr. Tomas.
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
Mark Espinosa in Redlands,Ca – May 04, 2018
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Reply
Dr Tomas is very concerned about my health and always advise me how to maintain my health.
What went well
  • Appointment scheduling
  • 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
Gary U Moore in Banning – May 03, 2018
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Reply
I am so happy that he's my doctor. He really spends time with me, helps manage my blood pressure. He very detailed and concerned of my health. He even even called me while on his vacation. Very thankful for him
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
No results
Helpful
Leonila in Beaumont – Apr 05, 2018
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Reply
Very likely to recommend Doctor
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
No results
1 person found this helpful
Helpful
Beaumont – Mar 01, 2018
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Reply
Dr. Tomas has been very good with my medical needs
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
Neil stewart in Beaumont ca. – Mar 01, 2018
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Reply
Dr. Tomas is very nice and professional. All information is explained very detail and clear. He answer to all of my mom concern questions.
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
1 person found this helpful
Helpful
Grace Nguyen in San bernardino – Feb 23, 2018
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Reply
Dr. James Tomas is a friendly Doctor. He will answer any questions that concern your health.
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
Vagivagi Samuelu in San Bernardino, CA – Jul 21, 2017
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Reply
He's very friendly at all his patients and professional
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
Banning, CA – Jul 19, 2017
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Reply
Dr. Tomas and personnel are courteous and professional. Appointment times are honored.
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
2 people found this helpful
Helpful
Genara Martinez in San Bernardino, CA – Jul 19, 2017
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Reply
I have been seeing Dr. Tomas now for about two years. He is very open and easy to talk to. His explains things in way so you can understand.
What went well
  • Wait times
What could be improved
No results
1 person found this helpful
Helpful
Arnold Swan in Beaumont – May 13, 2017
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Reply
Patience and kind
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
No results
1 person found this helpful
Helpful
Dean Irwin in Banning, Ca – Apr 28, 2017
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About Me

Biography

Dr. James Tomas, MD is a Nephrology Specialist in San Bernardino, CA and has over 13 years of experience in the medical field. He graduated from Ross University...Read more

Specialties

  • Nephrology

Board Certifications

  • Internal Medicine
  • Nephrology

Education

2009
Ross University / School of Medicine & Veterinary Medicine
Medical School

Awards

Frequently Asked Questions

Is Dr. James Tomas, MD accepting new patients?

Dr. James Tomas, MD generally accepts new patients on Healthgrades. You can see Dr. Tomas' profile to make an appointment.

Does Dr. James Tomas, MD accept my insurance?

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

What are Dr. James Tomas, MD's top areas of care?

Dr. Tomas frequently treats Acidosis, Acute Kidney Failure, and Hyperkalemia. See all procedures and conditions Dr. Tomas treats.

Where is Dr. James Tomas, MD's office located?

Dr. Tomas' office is located at 401 E Highland Ave Ste 551, San Bernardino, CA 92404. Find other locations and directions on Healthgrades.

Does Dr. James Tomas, MD offer telehealth services?

Dr. Tomas has not yet indicated whether they offer telehealth services. Please contact the office to check for availability/eligibility.

How can I make an appointment with Dr. James Tomas, MD?

Find contact information here to make an appointment.

Locations

Nephrology Associates Med Grp

Nephrology Associates Med Grp401 E Highland Ave Ste 551 San Bernardino, CA 92404
1

Practice

Banning Office264 N Highland Springs Ave Ste 3B Banning, CA 92220
2

Affiliated Hospitals

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

Learn more about how Healthgrades measuresHospital Quality.

Community Hospital Of San Bernardino

San Bernardino, CA

67% Patients that would definitely recommend, 3% lower than the national average

Redlands Community Hospital

Redlands, CA

74% Patients that would definitely recommend, 4% higher than the national average

11 Awards Received

San Gorgonio Memorial Hospital

Banning, CA

60% Patients that would definitely recommend, 10% lower than the national average

St. Bernardine Medical Center

San Bernardino, CA

68% Patients that would definitely recommend, 2% lower than the national average