PETER D MAZONSON MD
NPI 1811953391
Internal Medicine in San Jose, CA
About Peter D Mazonson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PETER D MAZONSON MD (NPI 1811953391) is an individual internal medicine provider in San Jose, California, licensed in California (G61502) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of Geisel School Of Medicine At Dartmouth (1982).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Peter D Mazonson Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95111 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN JOSE, CA 95111
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Peter Mazonson's NPI number?
The NPI number for Peter Mazonson is 1811953391. It was assigned to this individual provider in the NPPES registry on April 25, 2006.
Where is Peter Mazonson located?
Peter Mazonson practices at 500 Tully Rd Vhc Tully Primary Care Clinic, San Jose, CA 95111. The listed phone number is (408) 494-7400.
What is Peter Mazonson's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Peter Mazonson enrolled in Medicare?
Yes. Peter Mazonson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
When was this NPI record last updated?
The NPPES record for Peter Mazonson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Peter D Mazonson, MD · NPI 1811953391
Internal Medicine physician in San Jose, California. Individual provider, active in the CMS NPPES registry since April 25, 2006.
## Identity
- **NPI:** 1811953391 (Entity type: Individual)
- **Enumerated:** April 25, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** G61502 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 500 TULLY RD, VHC TULLY PRIMARY CARE CLINIC, San Jose, CA 95111-1917
- **Phone:** (408) 494-7400
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Geisel School Of Medicine At Dartmouth, class of 1982
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1811953391) · Data from the CMS NPPES public registry.