Karen Duncan, MD
NPI 1356577977 · Obstetrics & Gynecology Physician · New York, NY
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Duncan, MD is a Obstetrics & Gynecology Physician provider in New York, NY (NPI 1356577977).
Provider details
- NPI number
- 1356577977
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- ME116416 (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
17 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
87 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) |
|---|---|---|
| Ultrasound Scan of Uterus, Ovaries, Tubes, Cervix and Pelvic Area Through Vagina76830 | 46 | $136 |
| Complete Ultrasound Scan of Pelvis76856 | 41 | $120 |
Typical Medicare-allowed amounts for these services range $120–$136 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-10
- Last updated
- 2023-05-01
- Certified
- 2023-05-01
Frequently asked questions
- What is Karen Duncan's NPI number?
- Karen Duncan's National Provider Identifier (NPI) is 1356577977, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Duncan's specialty?
- Karen Duncan is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Duncan located?
- Karen Duncan's practice location on file with NPPES is 159 E 53rd St, New York, NY 10022-4602.
- What is Karen Duncan's phone number?
- The practice phone number listed in the NPPES registry for Karen Duncan is (646) 754-2700.
- Does Karen Duncan accept Medicare?
- Karen Duncan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Duncan's NPI active?
- Yes — Karen Duncan's NPI (1356577977) is active in the NPPES registry as of the last update on 2023-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.