John Frater, MD
NPI 1407873920 · Anatomic Pathology & Clinical Pathology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Frater, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Saint Louis, MO (NPI 1407873920).
Provider details
- NPI number
- 1407873920
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2003011845 (MO)
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
19 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
3,091 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 | 639 | $26 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 505 | $11 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 382 | $35 |
| Evaluation of Specimen Enzymes88319 | 382 | $25 |
| Flow Cytometry Technique for Dna Or Cell Analysis, 16 Or More Markers88189 | 203 | $79 |
| Preparation of Tissue for Examination By Removing Any Calcium Present88311 | 192 | $11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-17
- Last updated
- 2025-04-17
Frequently asked questions
- What is John Frater's NPI number?
- John Frater's National Provider Identifier (NPI) is 1407873920, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Frater's specialty?
- John Frater is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is John Frater located?
- John Frater's practice location on file with NPPES is 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110-1003.
- What is John Frater's phone number?
- The practice phone number listed in the NPPES registry for John Frater is (314) 362-5641.
- Does John Frater accept Medicare?
- John Frater is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Frater's NPI active?
- Yes — John Frater's NPI (1407873920) is active in the NPPES registry as of the last update on 2025-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.