GREGORY W. MASTERS MD
NPI 1689750515
Orthopaedic Surgery in Santa Clara, CA
About Gregory W. Masters Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY W. MASTERS MD (NPI 1689750515) is an individual orthopaedic surgery provider in Santa Clara, California, licensed in California (A74016) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Columbia University College Of Physicians And Surgeons (1999).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Gregory W. Masters 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.
Medicare Billing Reassignment
Medicare enrollment records show Gregory Masters reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95051 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SANTA CLARA, CA 95051
SANTA CLARA, CA 95051
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 Gregory Masters's NPI number?
The NPI number for Gregory Masters is 1689750515. It was assigned to this individual provider in the NPPES registry on October 31, 2006.
Where is Gregory Masters located?
Gregory Masters practices at 710 Lawrence Expy, Santa Clara, CA 95051. The listed phone number is (408) 236-6400.
What is Gregory Masters's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is Gregory Masters enrolled in Medicare?
Yes. Gregory Masters 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.
Which organization bills Medicare for Gregory Masters's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Masters reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gregory Masters's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Gregory Masters was last updated on December 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.
# Gregory W. Masters, MD · NPI 1689750515
Orthopaedic Surgery physician in Santa Clara, California. Individual provider, active in the CMS NPPES registry since October 31, 2006.
## Identity
- **NPI:** 1689750515 (Entity type: Individual)
- **Enumerated:** October 31, 2006
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** A74016 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 710 LAWRENCE EXPY, Santa Clara, CA 95051-5173
- **Phone:** (408) 236-6400
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Columbia University College Of Physicians And Surgeons, class of 1999
## Record status
- **NPPES last updated:** December 13, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1689750515) · Data from the CMS NPPES public registry.