NPPES file of Aug 9, 2026

Matthew Koo, MD

Anatomic Pathology Physician · Los Angeles, CA

Matthew Koo, MD is an anatomic pathology physician with a practice address in Los Angeles, California, and NPI 1386062347, issued on Apr 6, 2014. Check the license (California A142047, 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 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1386062347
Name
Matthew Koo
Credential
MD
Primary taxonomy
Anatomic Pathology Physician 207ZP0101X
License number
A142047 CA
Self-reported in NPPES; status is on the state search
Practice location
10833 Leconte Avenue, Los Angeles, CA 90095
Phone
(310) 267-2811
Enumerated
Apr 6, 2014
Record last updated
Aug 8, 2023
Fax
(310) 267-2625
Medicare enrollment
Enrolled (PECOS I20200731000457); accepts Medicare assignment
Medical or professional school
University Of Hawaii John A. Burns School Of Medicine, 2014
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 10833 Leconte Avenue

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

  1. Jaclyn ChalmersStudent in an Organized Health Care Education/Training Program1568154086
  2. Israa Laklouk, M.DAnatomic Pathology & Clinical Pathology Physician1326432667
  3. Jin Sun Lee, M.D.Student in an Organized Health Care Education/Training Program1225293343
  4. Pamela Miller, MSN NPAcute Care Nurse Practitioner1730378696
  5. Chana SachsAnatomic Pathology & Clinical Pathology Physician1831659721
  6. Justine Seivright, MDDermatology Physician1548919988

Verify Matthew Koo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A142047
    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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The practice group's MIPS final score for 2023 (Medicare payment program): 92.8 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score81.2
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $126.52

1 payment: food and beverage; the largest payer was Blueprint Medicines Corporation. The 382 providers of this specialty with any payment received $3,145.53 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Matthew Koo$126.52
  2. Specialty average$3,145.53

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Ucla Pathology And Laboratory Medicine GroupLos Angeles, CA

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

Matthew Koo among 386 anatomic pathology physician records in California

Matthew Koo, MD is one of 386 anatomic pathology physician records with a practice address in California. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 75% of them.

  • NPI issued2014 · 75% of these records are older, 23% newer
  • In a Medicare fileYes · 56% of these records are
  • In the CMS Doctors and Clinicians fileYes · 49% of these records are
  • Graduated2014 · median 2000 among the 190 with a school on file
  • Record last updated2023 · 66% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0101X 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 Physician providers in California

There are 386 anatomic pathology physician records in California.

The 8 anatomic pathology physician records with the nearest ZIP codes

  1. Raymond Barnhill, MDLos Angeles, CA 900951942271309
  2. David Dawson, MDLos Angeles, CA 900951386673911
  3. Sarah Dry, MDLos Angeles, CA 900951437195849
  4. Michael Fishbein, MDLos Angeles, CA 900951770528390
  5. Samuel French, MDLos Angeles, CA 900951376572602
  6. Ben Glasgow, MDLos Angeles, CA 900951922034511
  7. Chi Lai, MDLos Angeles, CA 900951487696373
  8. Nora Ostrzega, MDLos Angeles, CA 900951326075672

Common questions

What is Matthew Koo, MD's NPI number?

Matthew Koo, MD's National Provider Identifier (NPI) is 1386062347, issued on Apr 6, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Koo, MD located?

The NPPES record lists a practice address at 10833 Leconte Avenue, Los Angeles, CA, 90095. Phone: (310) 267-2811. Providers update this record themselves, so call before visiting.

How can I verify Matthew Koo, MD's license?

NPPES lists California license number A142047, 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.

What is Matthew Koo, MD's MIPS final score?

The 2023 MIPS final score is 92.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.

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.