Zachary Walker, MD
NPI 1164955571 · Diagnostic Radiology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Walker, MD is a Diagnostic Radiology Physician provider in San Francisco, CA (NPI 1164955571).
Provider details
- NPI number
- 1164955571
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD61397905 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,374 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 584 | $9 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 305 | $89 |
| Ct Scan of Chest Without Contrast71250 | 188 | $52 |
| X-Ray of Chest, 2 Views71046 | 180 | $11 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 127 | $86 |
| Ct Scan of Chest With Contrast71260 | 122 | $55 |
Practice location
Mailing address
Additional practice locations (1)
- 1304 Fawcett Ave Ste 100Tacoma, WA 98402-1900Phone: (253) 761-4200
Registry dates
- Enumerated
- 2017-04-04
- Last updated
- 2024-09-03
- Certified
- 2024-09-03
Frequently asked questions
- What is Zachary Walker's NPI number?
- Zachary Walker's National Provider Identifier (NPI) is 1164955571, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Walker's specialty?
- Zachary Walker is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Walker located?
- Zachary Walker's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
- What is Zachary Walker's phone number?
- The practice phone number listed in the NPPES registry for Zachary Walker is (415) 353-1821.
- Does Zachary Walker accept Medicare?
- Zachary Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Walker's NPI active?
- Yes — Zachary Walker's NPI (1164955571) is active in the NPPES registry as of the last update on 2024-09-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.