Dr. William Diehl, MD

Surgical OncologyMaleAge 63

Dr. Diehl
Accepting new patients

Summit Medical Group

140 Park Ave Florham Park, NJ 07932

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Dr. William Diehl, MD is a Surgical Oncology Specialist in Florham Park, NJ and has over 40 years of experience in the medical field. He graduated from Universidad Anahuac, Escuela De Medicina medical school in 1981. He is affiliated with medical facilities Morristown Medical Center and Saint Barnabas Medical Center. He is accepting new patients. Be sure to call ahead with Dr. Diehl to book an appointment.


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Dr. Diehl's Reviews

Likelihood to recommend Dr. Diehl

4.1

Based on 22 ratings

5 Stars
77.27272727272727%
(17)
4 Stars
0%
(0)
3 Stars
0%
(0)
2 Stars
4.545454545454546%
(1)
1 Star
18.181818181818183%
(4)
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How likely are you to recommend
Dr. Diehl?
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What went well
  • Appointment scheduling (17)
  • Appointment wasn't rushed (17)
  • Explained conditions well (17)
What could be improved
  • Didn't explain conditions well (4)
  • Didn't trust the provider's decisions (4)
  • Staff wasn't friendly (4)
RecentHighestLowestMost Helpful
Reply Flag
Excellent doctor. He is probably the kindest doctor I have ever encountered. He is patient and sensitive to patients needs. My mother had breast cancer and required a mastectomy. He took great care of her and was patient in answering all of our questions. He is really quite nice and so is his staff. Would highly recommend 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
4 people found this helpful
Helpful
NJ – Jun 07, 2019
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Reply Flag
Excellent doctor - I had breast cancer 11 years ago, and Dr. Diehl operated on me. When I had a second bout with breast cancer, I would only go to Dr. Diehl for my surgery. He is the best!
What went well
No results
What could be improved
No results
2 people found this helpful
Helpful
Feb 24, 2019
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Reply Flag
I was treated by Dr. Diehl and would highly recommend him to family and friends if the need arises for a surgical oncologist. He was professional, knowledgeable, patient and had excellent bedside manner.
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
5 people found this helpful
Helpful
Sandra Washington – Jul 10, 2018
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Reply Flag
Excellent surgeon
What went well
No results
What could be improved
No results
6 people found this helpful
Helpful
Jan 25, 2018
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Reply Flag
Steve Adams -Cedar Grove NJ I was not the patient but the husband of one. I thought Dr. Diehl during obviously a difficult time for my wife was wonderful. He was sensitive and really listened and answered all her questions.
What went well
No results
What could be improved
No results
7 people found this helpful
Helpful
Jan 10, 2018
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Reply Flag
I Didn’t think I would be posting again this year but i again needed a surgeon and of course I called Dr Diehl he is by far a great surgeon he has such compassion and understanding in treating the whole patient I can’t express enough the comfort I felt going into this second surgery knowing Dr Diehl would be caring for me thank you again for taking such good care of me! Sandra Willoughby
What went well
No results
What could be improved
No results
3 people found this helpful
Helpful
Sandra Willoughby in Branchburg NJ – Nov 15, 2017
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Reply Flag
Dr. Diehl performed my breast biopsy. He was wonderful. He was considerate, extremely kind, knowledgeable; and I just knew I was in good hands. He did not rush me out of the office and answered all my questions. He personally called me with the results in three business days after the biopsy. Fortunately, my results were benign so I did not need further treatment except for a 6 month followup ultrasound. I would definately recommend Dr. Diehl to family and friends.
What went well
No results
What could be improved
No results
5 people found this helpful
Helpful
Great Meadows, NJ – Aug 08, 2017
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Reply Flag
I recently had a breast biopsy done by Dr. Diehl after he was recommended to me by a few people I know and my OBGYN. Not only was he extremely knowledgeable about my situation, he was very kind and caring which is something you do not see most of the time. Very happy with my decision to use him and the final results.
What went well
No results
What could be improved
No results
4 people found this helpful
Helpful
Morristown, NJ – Jan 12, 2017
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Reply Flag
Dr. Diehl initially diagnosed my breast cancer after performing a biopsy and ordering the pathology. His insistence on the most precise testing absolutely contributed to my positive outcome following chemo and a bilateral mastectomy. He is intellectually rigorous and extraordinarily kind-hearted. He is available at any time to answer questions and explain treatment options. When I was most upset and afraid in the days following my diagnosis, he brought me peace through his caring manner.
What went well
No results
What could be improved
No results
4 people found this helpful
Helpful
Chris C. in Basking Ridge, NJ – Nov 27, 2016
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Reply Flag
He is a highly compassionate and skilled surgeon who immediately put me and husband at ease with his kind demeanor at the consult. We had met prior with 2 other "rockstar" area breast surgeons who shared a lack of urgency and left us feeling less than confident. Dr. Diehl looked at me as a person, not just body parts and urged me to proceed asap. My surgery revealed stage 2 DCIS, and we are so very glad we had his oncological background. He simply saved my life. Wonderful experience.
What went well
No results
What could be improved
No results
4 people found this helpful
Helpful
onehappylady in Randolph, NJ – Oct 07, 2016
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Reply Flag
Dr. Diehl performed a double mastectomy on my wife in 2014 for cancer. We were beyond scared to say the least. Dr. Diehl's calm demeanor and professionalism made us feel confident that my wife would get through this bout with cancer. The surgery went as planned without issue. My wife has been cancer free since because of Dr. Diehl. One word of caution, the Breast Reconstruction Surgeon that works or worked at the time with Dr. Diehl, was not in our insurance network. MAKE SURE YOURS IS!
What went well
No results
What could be improved
No results
6 people found this helpful
Helpful
Thankful in Boonton, NJ – Aug 30, 2016
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About Me

Care Philosophy

I firmly believe that the most effective doctors are those that treat patients, not diseases. Clearly understanding the disease of the patient is essential,...Read more

Biography

Dr. Diehl is a board certified General Surgeon with special interest, training and expertise in Surgical Oncology and Breast Surgical Oncology. He trained...Read more

Specialties

  • Surgical Oncology
  • Breast Surgical Oncology
  • General Surgery

Board Certifications

Education

1988
Meml Sloan Kettering Canc C
Fellowship Hospital
1986
Morristown Meml Hospital
Residency Hospital
1982
Indiana University Med Center
Residency Hospital
1981
Universidad Anahuac, Escuela De Medicina
Medical School

Languages

  • English
  • Spanish

Awards

Frequently Asked Questions

What other Surgical Oncology Specialists practice nearby?

Click here to compare with other Surgical Oncology Specialists.

What are Dr. William Diehl, MD's top areas of care?

Dr. Diehl frequently treats Breast Diseases, Breast Cancer, and Cancer. See all procedures and conditions Dr. Diehl treats.

Where is Dr. William Diehl, MD's office located?

Dr. Diehl's office is located at 140 Park Ave, Florham Park, NJ 07932. Find other locations and directions on Healthgrades.

What languages does Dr. William Diehl, MD speak?

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

Does Dr. William Diehl, MD offer telehealth services?

Dr. Diehl 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. William Diehl, MD?

Find contact information here to make an appointment.

Insurance Check

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Dr. Diehl accepts

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

(973) 404-9980

Dr. Diehl accepts the following insurance:

Aetna
Aetna HMO
Choice Plus POS II
Select
Amerihealth
Anthem
National (BlueCard) PPO
Blue Cross Blue Shield
Blue Card PPO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna
Cigna HMO
Cigna PPO
Great West Healthcare-Cigna PPO
Open Access Plus
Commercial Insurance Company
CoreSource
EBS-RMSCO
EmblemHealth
Health Insurance Plan of Greater New York (HIP) PPO
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Government Employees Health Association (GEHA)
GEHA
Guardian
HealthFirst
Highmark Blue Cross Blue Shield
Community Blue PPO
Horizon Blue Cross Blue Shield of New Jersey
Direct Access
Horizon Blue Cross Blue Shield HMO
Horizon Blue Cross Blue Shield POS
Horizon Blue Cross Blue Shield PPO
Humana
MagnaCare
MagnaCare PPO
Medicaid
Meritain Health
MultiPlan
MultiPlan PPO
PHCS Network PPO
Oxford Health Plans
Freedom Plan
QualCare
QualCare HMO
QualCare PPO
UnitedHealthCare
Choice Plus POS
Navigate HMO
Navigate POS
Options PPO
United Healthcare

Background Check

No malpractice claims found for New Jersey
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. Diehl's experience treating your condition or procedure

Dr. Diehl's Top Procedures and Conditions

Treatment Frequency
Breast Diseases
very high
very high

Treatment Frequency

Dr. Diehl treats Breast Diseases more than 99% of his peers

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

Breast Cancer
very high
very high

Treatment Frequency

Dr. Diehl treats Breast Cancer more than 93% of his peers

Dr. Diehl treats this condition more than 93% of his peers

Rating Includes other areas of care:

  • Angiosarcoma of the Breast
  • Basal Type Breast Cancer
  • Breast Cancer Recurrence
  • Ductal Carcinoma in Situ
  • Inflammatory Breast Cancer
  • Invasive Breast Cancer
  • Invasive Ductal Carcinoma
  • Invasive Lobular Carcinoma
  • Locally Advanced Breast Cancer
  • Lymphoma of the Breast
  • Male Breast Cancer
  • Malignant Breast Tumor
  • Metastatic Breast Cancer
  • Osteosarcoma of the Breast
  • Pre-Invasive Breast Cancer
  • Radiation-Induced Angiosarcoma of the Breast
  • Secretory Breast Carcinoma
  • Tubular Carcinoma
Hide other areas of care
Cancer
very high
very high

Treatment Frequency

Dr. Diehl treats Cancer more than 90% of his peers

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

Rating Includes other areas of care:

  • Adenoid Cystic Carcinoma
  • Adolescent Cancer
  • Adrenal Cortical Carcinoma
  • Adrenal Gland Cancer
  • Adult Cerebral Astrocytoma
  • Adult Small Cell Lung Cancer
  • Ampullary Carcinoma
  • Anal and Rectal Cancer
  • Anal Cancer
  • Anaplastic Oligodendroglioma
  • Angiosarcoma of the Breast
  • Appendix Cancer
  • Astrocytoma
  • Basal Cell Carcinoma (BCC)
  • Basal Type Breast Cancer
  • Benign Astrocytoma
  • Bile Duct Cancer
  • Biliary Cancer
  • Bladder Cancer
  • Blood Cancer
  • Bone Cancer
  • Brain and Nervous System Cancer (Includes: Gliomas, Astrocytoma, Schwannoma, Medulloblastoma, Chordoma)
  • Brain Cancer
  • Brainstem Glioma
  • Breast Cancer
  • Breast Cancer Recurrence
  • Bronchioalveolar Carcinoma
  • Bronchogenic Carcinoma
  • Cancer of Floor of Mouth
  • Cerebellar Astrocytoma
  • Cerebral Astrocytoma
  • Cervical Cancer
  • Cholangiocarcinoma
  • Chordoma
  • Choriocarcinoma
  • Chromophobe Renal Cell Carcinoma
  • Clear Cell Adenocarcinoma
  • Clear Cell Renal Cell Carcinoma
  • Colorectal Cancer
  • Cutaneous Squamous Cell Carcinoma
  • Distal Colorectal Cancer
  • Distal Gastrointestinal Tract Cancers
  • Ductal Carcinoma in Situ
  • Duodenal Cancer
  • Ear Cancer
  • Endocrine Cancer
  • Endometrial Cancer
  • ENT Cancer
  • Epidermoid Carcinoma
  • Epithelial-Myoepithelial Carcinoma
  • Esophageal Cancer
  • Extrahepatic Bile Duct Cancer
  • Eye Cancer
  • Facial Skin Cancer
  • Fallopian Tube Cancer
  • Familial Colorectal Cancer
  • Familial Pancreatic Cancer
  • Familial Renal Cancer
  • Familial Renal Cell Carcinoma
  • Fibrolamellar Hepatocellular Carcinoma
  • Follicular Adenocarcinoma
  • Follicular Thyroid Cancer
  • Gall Bladder Cancer
  • Gallbladder & Biliary Tract Cancer
  • Gastric Cancer, Borrmann 4
  • Gastroenterologic Cancer (Colon, Stomach, Esophageal, Liver)
  • Genital System Cancer
  • Genitourinary Cancers
  • Gland Cancer
  • Glassy Cell Carcinoma
  • Glioma
  • Gliomatosis Cerebri
  • Gynecologic Cancer
  • Hamartomatous Colorectal Cancer
  • Heart Cancer
  • Hepatobiliary Cancer
  • Hepatocellular Cancer
  • Hepatocellular Carcinoma
  • Hip Cancer
  • Hypopharyngeal Cancer
  • Inflammatory Breast Cancer
  • Infundibulocystic Basal Cell Carcinoma
  • Intestinal Cancer
  • Intrahepatic Cholangiocarcinoma
  • Invasive Breast Cancer
  • Invasive Ductal Carcinoma
  • Invasive Lobular Carcinoma
  • Joint Cancer
  • Juvenile Pilocytic Astrocytoma
  • Laryngeal Cancer
  • Laryngeal Carcinoma
  • Limb Cancer
  • Lip Cancer
  • Liver Cancer
  • Locally Advanced Breast Cancer
  • Lung Cancer
  • Lymphoma of the Breast
  • Male Breast Cancer
  • Male Genitourinary Cancer
  • Malignant Astrocytoma
  • Malignant Breast Tumor
  • Malignant Glioma
  • Mediastinal Cancer
  • Medullary Thyroid Cancer
  • Medulloblastoma
  • Melanoma-Astrocytoma Syndrome
  • Merkel Cell Cancer
  • Metastatic Adrenal Gland Cancer
  • Metastatic Blood Cancer
  • Metastatic Bone Cancer
  • Metastatic Breast Cancer
  • Metastatic Cancer
  • Metastatic Liver Cancer
  • Metastatic Lymph Cancer
  • Metastatic Nervous System Cancer
  • Metastatic Prostate Cancer
  • Metastatic Skin Cancer
  • Metastatic Soft Tissue Cancer
  • Metastatic Spinal Cord Cancer
  • Metastatic Squamous Neck Cancer With Occult Primary
  • MSI-H Colorectal Cancer
  • MSI-L Colorectal Cancer
  • MSS Colorectal Cancer
  • Muscle Cancer
  • Nasal Cavity Cancer
  • Nasopharyngeal Cancer
  • Neck Cancer
  • Nerve Cancer
  • Neuroendocrine Cancer
  • Nevoid Basal Cell Carcinoma Syndrome
  • Nodular Basal Cell Carcinoma
  • Noduloulcerative Basal Cell Carcinoma
  • Non-Melanoma Skin Cancer
  • Non-Small Cell Lung Cancer
  • Nonpolyposis Colorectal Cancer, Familial
  • Nose Cancer
  • Oligodendroglioma
  • Oral Cancer
  • Oral Squamous Cell Carcinoma
  • Oropharyngeal Cancer
  • Oropharyngeal Cancer, Adult
  • Osteosarcoma of the Breast
  • Ovarian Cancer
  • Ovarian Epithelial Cancer
  • Palate Cancer
  • Pancreatic Cancer
  • Pancreatic Islet Cell Cancer
  • Papillary Renal Cell Carcinoma
  • Papillary Thyroid Cancer
  • Paranasal Sinus Cancer
  • Parathyroid (Gland) Cancer
  • Parathyroid Carcinoma
  • Parotid Gland Cancer
  • Pediatric Cancer
  • Pelvic Cancer
  • Penile Cancer
  • Pharyngeal Cancer
  • Pigmented Basal Cell Carcinoma
  • Pleura Cancer
  • Pre-Invasive Breast Cancer
  • Primary Prostate Cancer
  • Prostate Cancer
  • Prostate Cancer - Hereditary - 1
  • Prostate Cancer - Hereditary - 10
  • Prostate Cancer - Hereditary - 11
  • Prostate Cancer - Hereditary - 14
  • Prostate Cancer - Hereditary - 2
  • Prostate Cancer - Hereditary - 3
  • Prostate Cancer - Hereditary - 4
  • Prostate Cancer - Hereditary - 5
  • Prostate Cancer - Hereditary - 6
  • Prostate Cancer - Hereditary - 7
  • Prostate Cancer - Hereditary - 8
  • Prostate Cancer - Hereditary - 9
  • Prostate Cancer - Hereditary - X-Linked 1
  • Prostate Cancer - Hereditary - X-Linked 2
  • Prostate Cancer - Hereditary -12
  • Prostate Cancer - Hereditary -13
  • Prostate Cancer - Hereditary -15
  • Radiation-Induced Angiosarcoma of the Breast
  • Rectal Cancer
  • Renal (Kidney) Cancer
  • Renal Cell Cancer
  • Respiratory System Cancer
  • Retinal Cancer
  • Salivary Gland Cancer
  • Sebaceous Gland Carcinoma
  • Secretory Breast Carcinoma
  • Sinonasal Undifferentiated Carcinoma
  • Sinus Cancer
  • Skin Cancer
  • Small Cell Lung Cancer
  • Spinal Cord Cancer
  • Spleen Cancer
  • Sporadic Colorectal Cancer
  • Squamous Cell Carcinoma
  • Squamous Cell Carcinoma of Conjunctiva
  • Squamous Cell Carcinoma of Head and Neck
  • Stomach and Small Intestine Cancer
  • Stomach Cancer
  • Stomach Cancer, Familial
  • Superficial Basal Cell Carcinoma
  • Supraglottic Laryngeal Cancer
  • Testicular Cancer
  • Thoracic Cancer
  • Throat Cancer
  • Thymus Cancer
  • Thyroid Cancer
  • Thyroid Cancer, Anaplastic
  • Thyroid Cancer, Familial Medullary
  • Thyroid Cancer, Hurthle Cell
  • Tongue Cancer
  • Trachea Cancer
  • Transitional Cell Cancer
  • Transitional Cell Carcinoma
  • Tubular Carcinoma
  • Urachal Cancer
  • Ureteral Cancer
  • Urinary Tract Cancer
  • Uterine Cancer
  • Vaginal Cancer
  • Visual Pathway and Hypothalamic Glioma
  • Vocal Cord Carcinoma
  • Vulvar Cancer
Hide other areas of care

Dr. Diehl's conditions and procedures:

  • Abdominal Disorders
  • Abscess
  • Acute Leukemia
  • Acute Myeloid Leukemia
  • All Lymphoma
  • Anemia
  • Appendectomy, Laparoscopic
  • Appendectomy, Open
  • Appendicitis
  • Autoimmune Diseases
  • Basal Cell Carcinoma
  • Benign Tumor
  • Bile Duct Cancer
  • Bile Duct Procedure
  • Biliary Drainage
  • Biopsy of Breast
  • Bladder Cancer
  • Bleeding Disorders
  • Blood Disorders
  • Bone Cancer
  • Bone Disorders
  • Brain Disorders
  • Breast Cancer
  • Breast Diseases
  • Breast Lump
  • Breast Surgical Procedure
  • Cancer
  • Central Nervous System Lymphoma
  • Cervical Cancer
  • Cholangiocarcinoma
  • Cholecystectomy With Robotic Assistance
  • Cholecystitis and Gallstones
  • Cholecystoenterostomy
  • Chronic Lymphocytic Leukemia
  • Coagulation Disorders (incl. Hemophilia)
  • Colectomy
  • Colectomy and Sigmoidectomy With Robotic Assistance
  • Colon and Rectal Surgery
  • Colorectal Cancer
  • Enterostomy (Laparoscopic or Open)
  • Excision of Bile Duct Tumor
  • Excision of Breast Tumor
  • Excision of Rectal Tumor
  • Excision of Skin Lesion
  • Excision of Stomach Tumor
  • Gallbladder and Biliary Tract Cancer
  • Gallbladder Cancer
  • Gallbladder Removal
  • Gallbladder Removal (Cholecystectomy), Laparoscopic
  • Gallbladder Removal (Cholecystectomy), Open
  • Gastrectomy
  • Gastrectomy With Robotic Assistance
  • Gastrointestinal Diseases
  • Gastrotomy
  • Hepatectomy
  • Hernia
  • Hernia Repair
  • Hodgkin's Disease
  • Hypercoagulable State
  • Immune Thrombocytopenic Purpura (ITP)
  • Incisional Hernia
  • Incisional Hernia Repair, Laparoscopic
  • Inguinal Hernia
  • Inguinal Hernia Repair, Laparoscopic
  • Inguinal Hernia Repair, Open
  • Kidney Cancer
  • Laparoscopic Sigmoidectomy With Robotic Assistance
  • Laparoscopic Surgical Procedure
  • Laparotomy
  • Leukocytosis
  • Lipomas
  • Liver Cancer
  • Lymph Node Biopsy or Excision
  • Lymphadenectomy With Robotic Assistance
  • Lymphoma, Large-Cell
  • Marginal Zone Lymphoma
  • Mastectomy
  • Melanoma
  • Merkel Cell Carcinoma
  • Multiple Myeloma
  • Myelodysplastic Syndromes
  • Myeloma
  • Myeloproliferative Disorders
  • Non-Hodgkin's Lymphoma
  • Open Incisional and-or Ventral Hernia Repair
  • Ovarian Cancer
  • Pancreatectomy (incl. Pancreas Transplant and Whipple Procedure)
  • Pancreatic Cancer
  • Pancytopenia
  • Plasmapheresis
  • Port Placements or Replacements
  • Pregnancy-Related Disorders
  • Primary Central Nervous System Lymphoma
  • Primary Hypercoagulable State (incl. Factor V Leiden Disease)
  • Prostate Cancer
  • Purpura
  • Retina Diseases
  • Secondary Malignancies
  • Skin Cancer
  • Small Intestine Cancer
  • Soft Tissue Sarcoma
  • Splenectomy
  • Splenectomy and Splenorrhaphy
  • Squamous Cell Carcinoma
  • Stomach and Small Intestine Cancer
  • Stomach Cancer
  • Stomach Surgery
  • Thalassemia
  • Throat Cancer (Nasopharyngeal)
  • Total Splenectomy With Robotic Assistance
  • Umbilical Hernia
  • Umbilical or Ventral Hernia Repair, Laparoscopic
  • Urinary Disorders
  • Uterine Cancer
  • Uterine Diseases
  • Ventral Hernia

Locations

Summit Medical Group

The Green at Florham Park140 Park Ave Florham Park, NJ 07932
1

Summit Medical Group

Livingston Office75 E Northfield Rd Livingston, NJ 07039
2