William Simpson, MD
NPI 1285634451 · Diagnostic Radiology Physician · New York, NY
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Simpson, MD is a Diagnostic Radiology Physician provider in New York, NY (NPI 1285634451).
Provider details
- NPI number
- 1285634451
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 202773 (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
20 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
1,116 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) |
|---|---|---|
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 125 | $92 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 86 | $344 |
| Limited Ultrasound Scan of Abdomen76705 | 80 | $29 |
| Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970 | 71 | $36 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 67 | $23 |
| Ct Scan of Chest With Contrast71260 | 64 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-28
- Last updated
- 2011-11-04
Frequently asked questions
- What is William Simpson's NPI number?
- William Simpson's National Provider Identifier (NPI) is 1285634451, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Simpson's specialty?
- William Simpson is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Simpson located?
- William Simpson's practice location on file with NPPES is 1176 5th Ave, New York, NY 10029-6503.
- What is William Simpson's phone number?
- The practice phone number listed in the NPPES registry for William Simpson is (212) 241-6381.
- Does William Simpson accept Medicare?
- William Simpson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Simpson's NPI active?
- Yes — William Simpson's NPI (1285634451) is active in the NPPES registry as of the last update on 2011-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.