Doctor profile · Federal record

Dr. Sergei Tatishchev, M.D.

Anatomic Pathology Physician (CMS: Pathology) · Los Angeles, CA

  • NPI 1639317340
  • Accepts Medicare
  • 18 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1500 San Pablo St, Room 206
Los Angeles, CA 900335313
(323) 442-2582
Mailing address
Po Box 31309
Los Angeles, CA 900310309

Credentials & registration

NPPES · NUCC
NPI registered
February 2009 — 17 yrs on file
Profile last updated
November 27, 2023
Year of graduation
2008 — 18 yrs since
Specialty taxonomy
207ZP0101X — NUCC code
State license (1)
California #A111978

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1639317340. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,940
Distinct HCPCS
8
Medicare allowed
$118,938
HCPCS Description Services Patients Avg allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity 2,193 703 $39
88341 Special stained specimen slides to examine tissue, each additional procedure 227 63 $30
88313 Special stained specimen slides to examine tissue including interpretation and report 188 68 $13
88342 Special stained specimen slides to examine tissue, initial procedure 123 102 $37
88307 Pathology examination of tissue using a microscope, moderately high complexity 90 62 $87
88309 Pathology examination of tissue using a microscope, high complexity 64 54 $154
88312 Special stained specimen slides to identify organisms including interpretation and report 37 23 $27
88304 Pathology examination of tissue using a microscope, moderately low complexity 18 16 $12

In context: peer comparison

Among 22 peers in Los Angeles Anatomic Pathology Physician, average services per provider: 164. This provider delivers 18× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Sergei Tatishchev's medical specialty?
Dr. Sergei Tatishchev practices Anatomic Pathology Physician in Los Angeles, CA.
Where does Dr. Sergei Tatishchev practice?
Dr. Sergei Tatishchev practices at 1500 San Pablo St, Los Angeles, CA 900335313. Office phone: 3234422582.
What is Dr. Sergei Tatishchev's NPI?
Dr. Sergei Tatishchev's National Provider Identifier (NPI) is 1639317340, issued by NPPES.
Does Dr. Sergei Tatishchev accept Medicare assignment?
Yes. Dr. Sergei Tatishchev accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sergei Tatishchev commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to examine tissue, each additional procedure (HCPCS 88341); Special stained specimen slides to examine tissue including interpretation and report (HCPCS 88313). Source: CMS Medicare Physician & Other Practitioners file.