Mark Mahan, MD
NPI 1609863778 · Diagnostic Radiology Physician · Orlando, FL
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Mahan, MD is a Diagnostic Radiology Physician provider in Orlando, FL (NPI 1609863778).
Provider details
- NPI number
- 1609863778
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ME 57707 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1,271 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 | 349 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 185 | $38 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 121 | $83 |
| X-Ray of Chest, 2 Views71046 | 72 | $10 |
| Ct Scan of Upper Spine Without Contrast72125 | 66 | $45 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 65 | $80 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-04
- Last updated
- 2026-02-26
- Certified
- 2026-02-26
Frequently asked questions
- What is Mark Mahan's NPI number?
- Mark Mahan's National Provider Identifier (NPI) is 1609863778, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Mahan's specialty?
- Mark Mahan is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Mahan located?
- Mark Mahan's practice location on file with NPPES is 20 W Kaley St, Orlando, FL 32806-2931.
- What is Mark Mahan's phone number?
- The practice phone number listed in the NPPES registry for Mark Mahan is (407) 423-2581.
- Does Mark Mahan accept Medicare?
- Mark Mahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Mahan's NPI active?
- Yes — Mark Mahan's NPI (1609863778) is active in the NPPES registry as of the last update on 2026-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.