Frederick Kretzschmar, MD
NPI 1245348861 · Anatomic Pathology & Clinical Pathology Physician · Greenbrae, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frederick Kretzschmar, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Greenbrae, CA (NPI 1245348861).
Provider details
- NPI number
- 1245348861
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G49874 (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
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
3,932 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 1,362 | $39 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 657 | $31 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 582 | $59 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 239 | $39 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 229 | $91 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 174 | $46 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-25
- Last updated
- 2007-07-12
Frequently asked questions
- What is Frederick Kretzschmar's NPI number?
- Frederick Kretzschmar's National Provider Identifier (NPI) is 1245348861, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frederick Kretzschmar's specialty?
- Frederick Kretzschmar is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Frederick Kretzschmar located?
- Frederick Kretzschmar's practice location on file with NPPES is 250 Bon Air Rd, Greenbrae, CA 94904.
- What is Frederick Kretzschmar's phone number?
- The practice phone number listed in the NPPES registry for Frederick Kretzschmar is (415) 925-7174.
- Does Frederick Kretzschmar accept Medicare?
- Frederick Kretzschmar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frederick Kretzschmar's NPI active?
- Yes — Frederick Kretzschmar's NPI (1245348861) is active in the NPPES registry as of the last update on 2007-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.