DR. WILLIAM HARLAND MONTGOMERY III MD
NPI 1881756450
Orthopaedic Surgery in San Francisco, CA
About Dr. William Harland Montgomery Iii Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM HARLAND MONTGOMERY III MD (NPI 1881756450) is an individual orthopaedic surgery provider in San Francisco, California, licensed in California (G71232) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of State University Of New York Downstate Medical Center (1986).
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
Dr. William Harland Montgomery Iii 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 Reassignments
3Medicare enrollment records show William Montgomery reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 761 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.
Areas of Expertise CMS Part B claims 9
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94117 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 William Montgomery's NPI number?
The NPI number for William Montgomery is 1881756450. It was assigned to this individual provider in the NPPES registry on December 13, 2006.
Where is William Montgomery located?
William Montgomery practices at 1 Shrader St Ste 650, San Francisco, CA 94117. The listed phone number is (415) 221-0665.
What is William Montgomery's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is William Montgomery enrolled in Medicare?
Yes. William Montgomery 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 organizations bill Medicare for William Montgomery's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Montgomery reassigns Medicare benefits to 3 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Ucsf Dept Of Surgery (San Francisco, CA). Each 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 William Montgomery'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 William Montgomery was last updated on September 8, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. William Harland Montgomery III, MD · NPI 1881756450
Orthopaedic Surgery physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since December 13, 2006.
## Identity
- **NPI:** 1881756450 (Entity type: Individual)
- **Enumerated:** December 13, 2006
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** G71232 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 SHRADER ST STE 650, San Francisco, CA 94117-1036
- **Phone:** (415) 221-0665 · **Fax:** (415) 221-4023
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Ucsf Dept Of Surgery (NPI 1477627537, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York Downstate Medical Center, class of 1986
## Record status
- **NPPES last updated:** September 8, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1881756450) · Data from the CMS NPPES public registry.