Mark Pennington, M.D.
NPI 1275525958 · Diagnostic Radiology Physician · Muskegon, MI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Pennington, M.D. is a Diagnostic Radiology Physician provider in Muskegon, MI (NPI 1275525958).
Provider details
- NPI number
- 1275525958
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 43010058239 (MI)
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
192 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 | 24 | $9 |
| X-Ray of Chest, 2 Views71046 | 23 | $10 |
| Ct Scan Head Or Brain Without Contrast70450 | 20 | $40 |
| Limited Ultrasound Scan of Abdomen76705 | 20 | $28 |
| Limited Ultrasound Scan Behind Abdominal Cavity76775 | 20 | $27 |
| X-Ray of Chest, 2 Views71046 | 17 | $11 |
| Limited Ultrasound Scan of Abdomen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-18
- Last updated
- 2012-04-12
Frequently asked questions
- What is Mark Pennington's NPI number?
- Mark Pennington's National Provider Identifier (NPI) is 1275525958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Pennington's specialty?
- Mark Pennington is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Pennington located?
- Mark Pennington's practice location on file with NPPES is 1700 Clinton St, Muskegon, MI 49442-5502.
- What is Mark Pennington's phone number?
- The practice phone number listed in the NPPES registry for Mark Pennington is (231) 728-4818.
- Does Mark Pennington accept Medicare?
- Mark Pennington is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Pennington's NPI active?
- Yes — Mark Pennington's NPI (1275525958) is active in the NPPES registry as of the last update on 2012-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.