Alexander Borowsky, M.D.
NPI 1891777512 · Anatomic Pathology & Clinical Pathology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Borowsky, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in San Francisco, CA (NPI 1891777512).
Provider details
- NPI number
- 1891777512
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A77194 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
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
463 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) |
|---|---|---|
| Microscopic Genetic Analysis of Tissue, Manual, Each Additional Multiplex Stain Procedure88377 | 164 | $64 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 107 | $38 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 65 | $42 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 60 | $83 |
| Pathology Examination of Specimen During Surgery, First Tissue Block88331 | 39 | $62 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 17 | $35 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-17
- Last updated
- 2025-08-25
- Certified
- 2025-08-25
Frequently asked questions
- What is Alexander Borowsky's NPI number?
- Alexander Borowsky's National Provider Identifier (NPI) is 1891777512, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Borowsky's specialty?
- Alexander Borowsky is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Borowsky located?
- Alexander Borowsky's practice location on file with NPPES is 1825 4th St, San Francisco, CA 94143-2350.
- What is Alexander Borowsky's phone number?
- The practice phone number listed in the NPPES registry for Alexander Borowsky is (415) 353-1613.
- Does Alexander Borowsky accept Medicare?
- Alexander Borowsky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Borowsky's NPI active?
- Yes — Alexander Borowsky's NPI (1891777512) is active in the NPPES registry as of the last update on 2025-08-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.