Amy Duffield, M.D., PH.D.
NPI 1144370255 · Anatomic Pathology & Clinical Pathology Physician · New York, NY
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amy Duffield, M.D., PH.D. is a Anatomic Pathology & Clinical Pathology Physician provider in New York, NY (NPI 1144370255).
Provider details
- NPI number
- 1144370255
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 302648 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,289 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) |
|---|---|---|
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 797 | $29 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 359 | $13 |
| Flow Cytometry Technique for Dna Or Cell Analysis, 16 Or More Markers88189 | 181 | $89 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 179 | $39 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 172 | $36 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 168 | $102 |
Practice location
Mailing address
Additional practice locations (1)
- 600 N Wolfe StPathology Building, Rm 401Baltimore, MD 21287-0005Phone: (410) 955-3980
Registry dates
- Enumerated
- 2007-01-11
- Last updated
- 2020-06-23
- Certified
- 2020-06-23
Frequently asked questions
- What is Amy Duffield's NPI number?
- Amy Duffield's National Provider Identifier (NPI) is 1144370255, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amy Duffield's specialty?
- Amy Duffield is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Amy Duffield located?
- Amy Duffield's practice location on file with NPPES is 1275 York Ave, New York, NY 10065-6007.
- What is Amy Duffield's phone number?
- The practice phone number listed in the NPPES registry for Amy Duffield is (212) 639-5900.
- Does Amy Duffield accept Medicare?
- Amy Duffield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amy Duffield's NPI active?
- Yes — Amy Duffield's NPI (1144370255) is active in the NPPES registry as of the last update on 2020-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.