Dr. Peter James Mazolewski, MD

Dr. Mazolewski practices at Concord Medical Center in Concord, California, part of John Muir Health.

Dr. Mazolewski's NPI, 1710076773, was assigned on October 11, 2006. Dr. Mazolewski graduated from Keck School of Medicine of USC in 1994. Dr. Mazolewski holds California license A84094.

Dr. Mazolewski's primary practice is Concord Medical Center, at 2540 East St, Concord, CA 94520 in Contra Costa County. The practice phone is (925) 682-8200.

Dr. Mazolewski's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dr. Mazolewski is also affiliated with John Muir Medical Center, Walnut Creek. The medical group on file is BASS Medical Group. Dmand AI also links Dr. Mazolewski to 2 more group practices and clinics and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mazolewski practices, 4 sites in all. Vendor and product names are available with a free account.

Surgery is Dr. Mazolewski's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Mazolewski is board certified in surgery by the American Board of Surgery. Dr. Mazolewski is licensed in California.

Dmand AI lists abdominal adhesion surgery, abdominal hernia repair surgery, acute gallbladder or bile duct inflammation, appendectomy, colon removal, esophagus, stomach, or upper small intestine surgery, gallbladder removal and groin hernia surgery among the conditions Dr. Mazolewski treats.

CMS data shows 245 Medicare services from Dr. Mazolewski across 5 procedure codes in 2024, for 162 Medicare patients. Medicare paid $32,981 for them.

CMS counts 162 Medicare patients who saw Dr. Mazolewski in 2024. The largest group is 65 to 74, with 61 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 40% are also on Medicaid. Their average risk score is 2.23, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Mazolewski's median patient age at 58, with 44% women.

In 2024, Dr. Mazolewski wrote 28 Medicare Part D claims for 17 patients. 100% of them were for generic drugs. CMS names the drug for 15 of them, across 1 drug with 11 or more claims each, at $18 in total drug cost. In 2023, CMS named 28 claims across 2 drugs.

Dr. Mazolewski accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 24 procedures of removal of tissue by Dr. Mazolewski, more than 71% of the clinicians it reports for that procedure.

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 7 papers to Dr. Mazolewski. The most frequent topics are Disease Models, Animal, Hyperbaric Oxygenation and Rats, Wistar. Dr. Mazolewski's most frequent co-authors are Timothy D. Browder, MD and Theodore W. Kurtz, MD.

CMS Open Payments shows 82 general payments to Dr. Mazolewski from 13 drug and device companies from 2016 to 2025. Education make up the largest share, 69% of the total. Intuitive Surgical, Inc. paid the most, $18,905.

Dmand AI lists 2 awards for Dr. Mazolewski, most recently CMS Stage 1 EHR in 2013.

Dr. Mazolewski graduated from Keck School of Medicine of USC in 1994. Dr. Mazolewski is a member of ACS.

Dr. Mazolewski is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.