DR. WILLIAM H IRVING M.D.
NPI 1033224134
Orthopaedic Surgery in Los Altos Hills, CA
About Dr. William H Irving M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM H IRVING M.D. (NPI 1033224134) is an individual orthopaedic surgery provider in Los Altos Hills, California, licensed in California (C27033) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Michigan Medical School (1963).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
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 H Irving M.d. 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 William Irving reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Palo Alto, CA 94306
- Reassigned Medicare billing, California enrollment
- 2,460 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 94022 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Irving's NPI number?
The NPI number for William Irving is 1033224134. It was assigned to this individual provider in the NPPES registry on August 20, 2006.
Where is William Irving located?
William Irving practices at 13631 Roble Alto Ct, Los Altos Hills, CA 94022. The listed phone number is (650) 948-2084.
What is William Irving's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is William Irving enrolled in Medicare?
Yes. William Irving 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 William Irving's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Irving reassigns Medicare benefits to County Of Santa Clara (Palo Alto, 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 William Irving'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 Irving was last updated on September 22, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 H Irving, M.D. · NPI 1033224134
Orthopaedic Surgery physician in Los Altos Hills, California. Individual provider, active in the CMS NPPES registry since August 20, 2006.
## Identity
- **NPI:** 1033224134 (Entity type: Individual)
- **Enumerated:** August 20, 2006
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** C27033 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 13631 ROBLE ALTO CT, Los Altos Hills, CA 94022-2412
- **Phone:** (650) 948-2084 · **Fax:** (650) 948-2084
## 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:** County Of Santa Clara (NPI 1144330614, Palo Alto, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 1963
## Record status
- **NPPES last updated:** September 22, 2014
- **Other identifiers:** Other 3125417 (CA); Medicare UPIN A33268 (CA); Medicaid 00C270330 (CA); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1033224134) · Data from the CMS NPPES public registry.