Carl Duncan, MD
NPI 1346237369 · Diagnostic Radiology Physician · Annapolis, MD
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carl Duncan, MD is a Diagnostic Radiology Physician provider in Annapolis, MD (NPI 1346237369).
Provider details
- NPI number
- 1346237369
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD018124E (PA)
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
20 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
4,168 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) |
|---|---|---|
| X-Ray of Chest, 2 Views71046 | 597 | $18 |
| Screening 3d Breast Mammography77063 | 403 | $32 |
| Screening Mammography77067 | 398 | $69 |
| X-Ray of Lower and Sacral Spine, Minimum of 4 Views72110 | 225 | $25 |
| X-Ray of Knee, 3 Views73562 | 167 | $25 |
| Complete Ultrasound Scan Behind Abdominal Cavity76770 | 160 | $54 |
| X-Ray of Hand, Minimum of 3 Views |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,000 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
- 2005-10-04
- Last updated
- 2007-11-13
Frequently asked questions
- What is Carl Duncan's NPI number?
- Carl Duncan's National Provider Identifier (NPI) is 1346237369, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carl Duncan's specialty?
- Carl Duncan is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Carl Duncan located?
- Carl Duncan's practice location on file with NPPES is 2002 Medical Pkwy, Annapolis, MD 21401-3046.
- What is Carl Duncan's phone number?
- The practice phone number listed in the NPPES registry for Carl Duncan is (410) 266-2770.
- Does Carl Duncan accept Medicare?
- Carl Duncan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carl Duncan's NPI active?
- Yes — Carl Duncan's NPI (1346237369) is active in the NPPES registry as of the last update on 2007-11-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.