NPPES file of Aug 9, 2026

Michael Noel Koss, MD

Anatomic Pathology & Clinical Pathology Physician · Los Angeles, CA

Michael Noel Koss, MD is an anatomic pathology & clinical pathology physician with a practice address in Los Angeles, California, and NPI 1508966201, issued on Sep 22, 2006. Check the license (California G40559, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1508966201
Name
Michael Noel Koss
Credential
MD
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License number
G40559 CA
Self-reported in NPPES; status is on the state search
Practice location
1450 San Pablo St FL 2, Los Angeles, CA 90033
Phone
(323) 442-2582
Enumerated
Sep 22, 2006
Record last updated
Nov 27, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest anatomic pathology & clinical pathology physician records → All 1,554 in California → Look up another NPI →

Also registered at 1450 San Pablo St FL 2

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

  1. Philip Carpenter, MDAnatomic Pathology Physician1801976998
  2. Adrian Correa, M.D.Anatomic Pathology & Clinical Pathology Physician1245245950
  3. David Yau, MDHematology (Pathology) Physician1528295946
  4. Evan Yung, MDAnatomic Pathology & Clinical Pathology Physician1003107756

Verify Michael Noel Koss in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G40559    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Michael Noel Koss among 1,554 anatomic pathology & clinical pathology physician records in California

Michael Noel Koss, MD is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 57% newer
  • In a Medicare fileNo · 65% of these records are
  • In the CMS Doctors and Clinicians fileNo · 57% of these records are
  • Record last updated2023 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in California

There are 1,554 anatomic pathology & clinical pathology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,554 in California → Every provider in Los Angeles → Anatomic Pathology & Clinical Pathology Physician nationwide →

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Nancy Barr, MDLos Angeles, CA 900331902812878
  2. Deborah Commins, MDLos Angeles, CA 900331801802772
  3. Adrian Correa, M.D.Los Angeles, CA 900331245245950
  4. Alexander Fedenko, MDLos Angeles, CA 900331558377424
  5. Kil Lee, M.D.Los Angeles, CA 900331508851726
  6. Lauren O'Brien, M.D.Los Angeles, CA 900331689608556
  7. Dariush Sahmedini, M.D.Los Angeles, CA 900331790771830
  8. Chandrika Seneviratne, M.D.Los Angeles, CA 900331083608731

Common questions

What is Michael Noel Koss, MD's NPI number?

Michael Noel Koss, MD's National Provider Identifier (NPI) is 1508966201, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael Noel Koss, MD located?

The NPPES record lists a practice address at 1450 San Pablo St FL 2, Los Angeles, CA, 90033. Phone: (323) 442-2582. Providers update this record themselves, so call before visiting.

How can I verify Michael Noel Koss, MD's license?

NPPES lists California license number G40559, 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. 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.