NPPES file of Aug 9, 2026

Yao Ma, M.D.

Blood Banking & Transfusion Medicine Physician · Los Angeles, CA

Yao Ma, M.D. is a blood banking & transfusion medicine physician with a practice address in Los Angeles, California, and NPI 1093132524, issued on Mar 21, 2014. Check the license (California A127935, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1093132524
Name
Yao Ma
Credential
M.D.
Primary taxonomy
Blood Banking & Transfusion Medicine Physician 207ZB0001X
License numbers
A127935 CA
R4589 TX
Self-reported in NPPES; status is on the state search
Practice location
1100 N State St., Los Angeles, CA 90033
Phone
(323) 409-7159
Enumerated
Mar 21, 2014
Record last updated
Oct 29, 2024
Medicare enrollment
Enrolled (PECOS I20230117001495); accepts Medicare assignment
Medical or professional school
University Of Texas Southwestern Medical School At Dallas, 2012
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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Verify Yao Ma in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A127935
    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

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The practice group's MIPS final score for 2023 (Medicare payment program): 84.1 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 score84.5
  2. Costout of 100 · 30%54.4
  3. Promoting interoperabilitynot scored (reweighted)
  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).

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).

Yao Ma among 54 blood banking & transfusion medicine physician records in California

Yao Ma, M.D. is one of 54 blood banking & transfusion medicine physician records with a practice address in California. 44% 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 74% of them.

  • NPI issued2014 · 74% of these records are older, 24% newer
  • In a Medicare fileYes · 44% of these records are
  • In the CMS Doctors and Clinicians fileYes · 39% of these records are
  • Graduated2012 · median 2011 among the 21 with a school on file
  • Record last updated2024 · 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 207ZB0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Blood Banking & Transfusion Medicine Physician providers in California

There are 54 blood banking & transfusion medicine physician records in California.

The 8 blood banking & transfusion medicine physician records with the nearest ZIP codes

  1. Melanie Osby, M.D.Los Angeles, CA 900331154413045
  2. Huy Pham, M.D.Los Angeles, CA 900331497998314
  3. Yembur Ahmad, MDLos Angeles, CA 900271669978342
  4. Michael Kanter, MDLos Angeles, CA 900271619044518
  5. Joseph Thompson Jr., MDLos Angeles, CA 900271629145503
  6. Mark Edmunds, M.D.West Hollywood, CA 900481073818548
  7. Judith Pachciarz, M.D.Los Angeles, CA 900591134220338
  8. Shelley Chang, MDLos Angeles, CA 900891720378151

Common questions

What is Yao Ma, M.D.'s NPI number?

Yao Ma, M.D.'s National Provider Identifier (NPI) is 1093132524, issued on Mar 21, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Yao Ma, M.D. located?

The NPPES record lists a practice address at 1100 N State St., Los Angeles, CA, 90033. Phone: (323) 409-7159. Providers update this record themselves, so call before visiting.

How can I verify Yao Ma, M.D.'s license?

NPPES lists California license number A127935, 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 Yao Ma, M.D.'s MIPS final score?

The 2023 MIPS final score is 84.1 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.