Marc Underhill, M.D.
NPI 1619188661 · Diagnostic Radiology Physician · Orlando, FL
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Underhill, M.D. is a Diagnostic Radiology Physician provider in Orlando, FL (NPI 1619188661).
Provider details
- NPI number
- 1619188661
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 01069066A (IN)
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 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
1,770 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) |
|---|---|---|
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 294 | $37 |
| Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970 | 238 | $32 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 157 | $20 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 78 | $83 |
| Ct Scan of Chest Without Contrast71250 | 68 | $127 |
| X-Ray of Chest, 1 View71045 | 66 | $8 |
| Ultrasound of Both Sides of Head and Neck Blood Flow |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$118 across 1 record (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
- 2007-05-24
- Last updated
- 2023-03-28
- Certified
- 2023-03-28
Frequently asked questions
- What is Marc Underhill's NPI number?
- Marc Underhill's National Provider Identifier (NPI) is 1619188661, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Underhill's specialty?
- Marc Underhill is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Underhill located?
- Marc Underhill's practice location on file with NPPES is 52 W Underwood St, Orlando, FL 32806-1110.
- What is Marc Underhill's phone number?
- The practice phone number listed in the NPPES registry for Marc Underhill is (321) 842-8475.
- Does Marc Underhill accept Medicare?
- Marc Underhill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Underhill's NPI active?
- Yes — Marc Underhill's NPI (1619188661) is active in the NPPES registry as of the last update on 2023-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.