NPPES file of Aug 9, 2026

Sergei Tatishchev, M.D.

Anatomic Pathology Physician · Los Angeles, CA

Sergei Tatishchev, M.D. is an anatomic pathology physician with a practice address in Los Angeles, California, and NPI 1639317340, issued on Feb 3, 2009. Check the license (California A111978, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639317340
Name
Sergei Tatishchev
Credential
M.D.
Primary taxonomy
Anatomic Pathology Physician 207ZP0101X
License number
A111978 CA
Self-reported in NPPES; status is on the state search
Practice location
1500 San Pablo St, Los Angeles, CA 90033
Phone
(323) 442-2582
Enumerated
Feb 3, 2009
Record last updated
Nov 27, 2023
Medicare enrollment
Enrolled (PECOS I20120625000528); accepts Medicare assignment
Medical or professional school
University Of Colorado School Of Medicine, Denver, 2008
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1500 San Pablo St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Matthew Abad-Santos, MDVascular & Interventional Radiology Physician1487041406
  2. Ali Abanobi, CRNACertified Registered Nurse Anesthetist1740756196
  3. Emily AbbottCardiopulmonary Physical Therapist1053116251
  4. Hadi Abou El Hassan, MDNeurology Physician1053995720
  5. Taaha Adamji, MDStudent in an Organized Health Care Education/Training Program1770414377
  6. Nikhil AggarwalStudent in an Organized Health Care Education/Training Program1144029596

Verify Sergei Tatishchev in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A111978    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Usc Care Medical Group IncLos Angeles, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Anatomic Pathology Physician providers in California

There are 386 anatomic pathology physician records in California.

All 386 in California → Every provider in Los Angeles →

Other anatomic pathology physician records in California

  1. Abul Abbas, MBBSSan Francisco, CA1881652964
  2. John Abele, MDSacramento, CA1063493625
  3. Mitchell Adachi, MDSan Francisco, CA1720166366
  4. Brad Adler, M.D.Ventura, CA1003979618
  5. Ashna Aggarwal, MDSacramento, CA1235624362
  6. Naoki Akanuma, MD PHDSacramento, CA1881222974
  7. Najeeb Alshak, MDLos Angeles, CA1487721387
  8. Charles Amezcua, M.D.Santa Rosa, CA1245373992
  9. Joseph Anderson, M.D.San Rafael, CA1003002494
  10. Shehla Arain, M.D.Yorba Linda, CA1497927784

Common questions

What is Sergei Tatishchev, M.D.'s NPI number?

Sergei Tatishchev, M.D.'s National Provider Identifier (NPI) is 1639317340, issued on Feb 3, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Sergei Tatishchev, M.D. located?

The NPPES record lists a practice address at 1500 San Pablo St, Los Angeles, CA, 90033. Phone: (323) 442-2582. Providers update this record themselves, so call before visiting.

How can I verify Sergei Tatishchev, M.D.'s license?

NPPES lists California license number A111978, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.