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Dr. William Diehl, MD

Dr. William Diehl, MD

Breast Surgical Oncology*
40+ years of experience

Dr. William Diehl, MD is a breast 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 in 1981. He is affiliated with Morristown Medical Center. He is accepting new patients.

4.3 Star Rating
Based on 26 reviews 4.3 Star Rating (26 reviews)

Practice

150 Park Ave Florham Park, NJ 07932

Make an Appointment

(973) 404-9945

Hospital Highlight

Dr. Diehl is affiliated with Morristown Medical Center Morristown, a highly rated and top awarded hospital for general surgery.

At a Glance

  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Practices at Top Hospital
    America’s 100 Best Hospitals for Gastrointestinal Care Award™ • See hospitals
  • Hospital Satisfaction
    Patients said they were highly satisfied at this doctor's hospital. • See hospitals
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Dr. Diehl's Reviews

Likelihood to recommend Dr. Diehl

4.3

26 ratings, 14 with a written review
5 Star
81%
81%
4 Star
0%
0%
3 Star
0%
0%
2 Star
4%
4%
1 Star
15%
15%

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RecentHighestLowestMost Helpful
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 person found this helpful
Helpful
Apr 26, 2024
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What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
4 people found this helpful
Helpful
Michelle – Sep 07, 2021
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What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
3 people found this helpful
Helpful
Apr 23, 2021
×Post a ResponseAre you Dr. William Diehl, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
10 people found this helpful
Helpful
NJ – Jun 07, 2019
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What went well
No results
What could be improved
No results
6 people found this helpful
Helpful
Feb 24, 2019
×Post a ResponseAre you Dr. William Diehl, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
9 people found this helpful
Helpful
Sandra Washington – Jul 10, 2018
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What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
7 people found this helpful
Helpful
Jan 25, 2018
×Post a ResponseAre you Dr. William Diehl, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
10 people found this helpful
Helpful
Jan 10, 2018
×Post a ResponseAre you Dr. William Diehl, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
3 people found this helpful
Helpful
Sandra Willoughby in Branchburg NJ – Nov 15, 2017
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What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
7 people found this helpful
Helpful
Great Meadows, NJ – Aug 08, 2017
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What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
4 people found this helpful
Helpful
Morristown, NJ – Jan 12, 2017
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What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
5 people found this helpful
Helpful
Chris C. in Basking Ridge, NJ – Nov 27, 2016
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What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
4 people found this helpful
Helpful
onehappylady in Randolph, NJ – Oct 07, 2016
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What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
7 people found this helpful
Helpful
Thankful in Boonton, NJ – Aug 30, 2016
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Leave a review

How was your experience with Dr. Diehl?

Know Before You Go

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, but even diseases vary from patient to patient so I always teach the Surgical Residents...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 at the prestigious Memorial Sloan-Kettering Cancer Center and is part of Summit Medical Group...read more

  • Breast Surgical Oncology

  • Surgical Oncology

  • General Surgery

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Memorial Sloan Kettering Canc C

    Fellowship Hospital, 1988

  • Morristown Memorial Hospital

    Residency Hospital, 1986

  • Indiana University Medical Center

    Residency Hospital, 1982

  • Universidad Anahuac, Escuela De Medicina

    Medical School, 1981
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

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Healthgrades Top Picks on General Surgeons

Locations

Practice

Summit Medical Group PA150 Park Ave Florham Park, NJ 07932
1
Daveed Frazier MD LLC261 James St Ste 2G Morristown, NJ 07960
2
Summit Medical Group PA75 E Northfield Rd Livingston, NJ 07039
3

Affiliated Hospitals

  • Morristown Medical Center

    100 Madison Ave
    Morristown, NJ 07960
    Recipient of 55
    hospital awards

    America’s 100 Best Hospitals for Gastrointestinal Care Award™ (2025)

    Superior clinical outcomes in colorectal surgeries, gallbladder removal, upper gastrointestinal surgery, and treating bowel obstruction, gastrointestinal bleeds, and pancreatitis

    America’s 100 Best Hospitals for Gastrointestinal Surgery Award™ (2025)

    Superior clinical outcomes in colorectal surgeries, gallbladder removal, upper gastrointestinal surgery, and treating bowel obstruction, gastrointestinal bleeds, and pancreatitis

    View all awards

    How patients felt about the care they received at this hospital.

    87%
    Patients said they were given information about recovering at home

    3% higher than the national average

    80%
    Patients would recommend the hospital to friends and family

    15% higher than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality