Constantin Friedman, MD PHD
NPI 1609191055 · Anatomic Pathology & Clinical Pathology Physician · New York, NY
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Constantin Friedman, MD PHD is a Anatomic Pathology & Clinical Pathology Physician provider in New York, NY (NPI 1609191055).
Provider details
- NPI number
- 1609191055
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 269593 (NY)
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
16 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
3,722 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) |
|---|---|---|
| Cell Examination of Specimen, Selective Cellular Enhancement Technique88112 | 1,487 | $31 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 1,315 | $39 |
| Cell Examination of Urine, Computer-Assisted88121 | 257 | $54 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 110 | $92 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 107 | $42 |
| Special Stained Specimen Slides to Examine Tissue, Each Multiplex Procedure88344 | 103 | $43 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-03-29
- Last updated
- 2017-09-12
Frequently asked questions
- What is Constantin Friedman's NPI number?
- Constantin Friedman's National Provider Identifier (NPI) is 1609191055, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Constantin Friedman's specialty?
- Constantin Friedman is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Constantin Friedman located?
- Constantin Friedman's practice location on file with NPPES is 1300 York Ave, New York, NY 10065-4805.
- What is Constantin Friedman's phone number?
- The practice phone number listed in the NPPES registry for Constantin Friedman is (212) 746-2700.
- Does Constantin Friedman accept Medicare?
- Constantin Friedman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Constantin Friedman's NPI active?
- Yes — Constantin Friedman's NPI (1609191055) is active in the NPPES registry as of the last update on 2017-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.