Dr. Peter J. Mazolewski
- Gender: Male
- Experience: 27 years
- Graduated from: University Of Southern California Keck School Of Medicine
- Graduation year: 1994
- Sole propriator: No
- NPI: 1710076773
Dr. Peter J. Mazolewski M.D.
Surgeon
He is located at 365 Lennon Lane Suite 290 in Walnut Creek, CA 94598. Can help patients with the following: Anal Fissure, Cancer, Cyst, Heart Disease, Inflammatory Bowel Disease (IBD), Lymphedema. His National Provider Identifier (NPI) number is 1710076773. Appointment can be made via the phone number (925) 658-5076. He is affiliated with 5 practices and 2 hospitals.
Conditions treated
Dr. Peter James Mazolewski, being an surgeon, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Peter J. Mazolewski.
- Achalasia
- Anal Fissure
- Appendicitis
- Boils
- Cancer
- Colon Cancer
- Crohn's Disease
- Cyst
- Diverticulosis
- Enlarged Spleen
- Esophageal Cancer
- Gallstones
- Gangrene
- Heart Disease
- Hemorrhoids
- Hernia
- Inflammatory Bowel Disease (IBD)
- Lymphedema
- Pancreatitis
- Peptic Ulcer
- Pilonidal Cyst
- Sebaceous Cyst
- Ulcerative Colitis
Procedures Performed by Dr. Peter J. Mazolewski
Insurances Accepted by Dr. Peter J. Mazolewski
- Medicare
Medicare Enrollment
Dr. Peter J. Mazolewski is enrolled to bill Medicare as a Practitioner - General Surgery .
Bills through: John Muir Trauma Physicians Billing Service
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and is not a comment on insurance accepted, quality, outcomes, or board certification.
Payments received
Drug payment
| Intuitive Surgical | $1403 |
| Smith \u0026 Nephew | $348 |
| Medtronic | $164 |
Other
| Travel and Lodging | $1309 |
| Food and Beverage | $995 |
Studies
UNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated in 1994Additional Specialities
- Specialist
Affiliated practices
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- Address: Building H Suite 202 2021 Ygnacio Valley Road Walnut Creek, 94598, CA
- Gender: Male
- Address: Suite 290 365 Lennon Lane Walnut Creek, 94598, CA
- Gender: Male
- Address: Suite 205 110 LA Casa Viaduct Walnut Creek, 94598, CA
- Gender: Male
- Address: 2637 Shadelands Drive Walnut Creek, 94598, CA
- Gender: Male
- Address: 2637 Shadelands Drive Walnut Creek, 94598, CA
Questions & Answers
Where can you meet with Dr. Peter James Mazolewski?
Dr. Peter James Mazolewski's office is located at 365 Lennon Lane Suite 290 in Walnut Creek, CA 94598.
Does Dr. Peter James Mazolewski accept patients with Medicare?
Yes, Dr. Peter James Mazolewski accepts patients with Medicare.
Has Dr. Peter James Mazolewski affiliation with hospitals?
Dr. Peter James Mazolewski is affiliated with JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS. For the full list of hospitals see this list.
Does Dr. Peter James Mazolewski have affiliation with practices?
Dr. Peter James Mazolewski is affiliated with John Muir Medical Center. For the full list of practices see this list.
What conditions does Dr. Peter James Mazolewski treat?
Dr. Peter James Mazolewski provides treatment for Anal Fissure, Cancer, Cyst, Heart Disease, Inflammatory Bowel Disease (IBD), Lymphedema. For the full list see this list.