William Ashley, M.D., PH.D., M.B.A.
NPI 1033238647 · Neurological Surgery Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Neurosurgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Ashley, M.D., PH.D., M.B.A. is a Neurological Surgery Physician provider in Baltimore, MD (NPI 1033238647).
Provider details
- NPI number
- 1033238647
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D., M.B.A.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D82113 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
505 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 137 | $132 |
| Insertion of Tube Into Internal Neck Artery for Diagnosis Or Treatment With Review By Radiologist36224 | 72 | $379 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 63 | $226 |
| Imaging of Blood Vessel75898 | 41 | $93 |
| 3d Radiographic Procedure With Computerized Image Postprocessing76377 | 36 | $37 |
| Review By Radiologist of Image for Insertion of Material to Block Blood Flow75894 | 30 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$378 across 10 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-28
- Last updated
- 2016-11-11
Frequently asked questions
- What is William Ashley's NPI number?
- William Ashley's National Provider Identifier (NPI) is 1033238647, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Ashley's specialty?
- William Ashley is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is William Ashley located?
- William Ashley's practice location on file with NPPES is 5051 Greenspring Ave, Baltimore, MD 21209-4354.
- What is William Ashley's phone number?
- The practice phone number listed in the NPPES registry for William Ashley is (410) 601-4417.
- Does William Ashley accept Medicare?
- William Ashley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Ashley's NPI active?
- Yes — William Ashley's NPI (1033238647) is active in the NPPES registry as of the last update on 2016-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.