Sergei Tatishchev, M.D.
NPI 1639317340 · Anatomic Pathology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sergei Tatishchev, M.D. is a Anatomic Pathology Physician provider in Los Angeles, CA (NPI 1639317340).
Provider details
- NPI number
- 1639317340
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A111978 (CA)
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
17 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
2,437 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 | 1,816 | $38 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 200 | $29 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 115 | $36 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 68 | $12 |
| Pathology Examination of Tissue Using a Microscope, High Complexity88309 | 65 | $149 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 62 | $84 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-02-03
- Last updated
- 2023-11-27
- Certified
- 2020-08-31
Frequently asked questions
- What is Sergei Tatishchev's NPI number?
- Sergei Tatishchev's National Provider Identifier (NPI) is 1639317340, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sergei Tatishchev's specialty?
- Sergei Tatishchev is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Sergei Tatishchev located?
- Sergei Tatishchev's practice location on file with NPPES is 1500 San Pablo St, Los Angeles, CA 90033-5313.
- What is Sergei Tatishchev's phone number?
- The practice phone number listed in the NPPES registry for Sergei Tatishchev is (323) 442-2582.
- Does Sergei Tatishchev accept Medicare?
- Sergei Tatishchev is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sergei Tatishchev's NPI active?
- Yes — Sergei Tatishchev's NPI (1639317340) is active in the NPPES registry as of the last update on 2023-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.