John Graff, DO
NPI 1477990125 · Anatomic Pathology & Clinical Pathology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Graff, DO is a Anatomic Pathology & Clinical Pathology Physician provider in Sacramento, CA (NPI 1477990125).
Provider details
- NPI number
- 1477990125
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A13264 (CA)
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
13 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
1,287 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 | 449 | $28 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 284 | $12 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 117 | $37 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 90 | $42 |
| Flow Cytometry Technique for Dna Or Cell Analysis, 16 Or More Markers88189 | 85 | $84 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 78 | $35 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-03
- Last updated
- 2017-10-12
Frequently asked questions
- What is John Graff's NPI number?
- John Graff's National Provider Identifier (NPI) is 1477990125, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Graff's specialty?
- John Graff is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is John Graff located?
- John Graff's practice location on file with NPPES is 4400 V St Ste 1107, Sacramento, CA 95817-1445.
- What is John Graff's phone number?
- The practice phone number listed in the NPPES registry for John Graff is (916) 734-0299.
- Does John Graff accept Medicare?
- John Graff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Graff's NPI active?
- Yes — John Graff's NPI (1477990125) is active in the NPPES registry as of the last update on 2017-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.