William Walter, M.D.
NPI 1649568015 · Diagnostic Radiology Physician · New York, NY
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Walter, M.D. is a Diagnostic Radiology Physician provider in New York, NY (NPI 1649568015).
Provider details
- NPI number
- 1649568015
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 282912 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
4,751 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 Knee, 3 Views73562 | 427 | $18 |
| X-Ray of Shoulder, Minimum of 2 Views73030 | 323 | $16 |
| X-Ray of Knee, 4 Or More Views73564 | 292 | $21 |
| X-Ray of Hip, 2-3 Views73502 | 270 | $21 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 269 | $18 |
| X-Ray of Foot, Minimum of 3 Views73630 | 236 | $18 |
| Mri Scan of Leg Joint Without Contrast |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-07-19
- Last updated
- 2026-02-02
- Certified
- 2026-02-02
Frequently asked questions
- What is William Walter's NPI number?
- William Walter's National Provider Identifier (NPI) is 1649568015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Walter's specialty?
- William Walter is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Walter located?
- William Walter's practice location on file with NPPES is 333 E 38th St, New York, NY 10016-2772.
- What is William Walter's phone number?
- The practice phone number listed in the NPPES registry for William Walter is (646) 501-7400.
- Does William Walter accept Medicare?
- William Walter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Walter's NPI active?
- Yes — William Walter's NPI (1649568015) is active in the NPPES registry as of the last update on 2026-02-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.