Hassan Nayer, MD
NPI 1881695666 · Anatomic Pathology & Clinical Pathology Physician · Falls Church, VA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hassan Nayer, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Falls Church, VA (NPI 1881695666).
Provider details
- NPI number
- 1881695666
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101236717 (VA)
Specialties & taxonomies
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
1,644 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 | 393 | $28 |
| Antibody Evaluation, Each Additional Single Antibody Stain Procedure88350 | 215 | $30 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 210 | $37 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 167 | $12 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 146 | $35 |
| Flow Cytometry Technique for Dna Or Cell Analysis, 16 Or More Markers88189 | 95 | $85 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-03
- Last updated
- 2009-01-24
Frequently asked questions
- What is Hassan Nayer's NPI number?
- Hassan Nayer's National Provider Identifier (NPI) is 1881695666, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hassan Nayer's specialty?
- Hassan Nayer is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Hassan Nayer located?
- Hassan Nayer's practice location on file with NPPES is 3300 Gallows Rd, Falls Church, VA 22042-3307.
- What is Hassan Nayer's phone number?
- The practice phone number listed in the NPPES registry for Hassan Nayer is (703) 776-3441.
- Does Hassan Nayer accept Medicare?
- Hassan Nayer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hassan Nayer's NPI active?
- Yes — Hassan Nayer's NPI (1881695666) is active in the NPPES registry as of the last update on 2009-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.