NPPES file of Aug 9, 2026

John C. Chow, M.D.

Legal Medicine · San Mateo, CA

John C. Chow, M.D. is a legal medicine with a practice address in San Mateo, California, and NPI 1215984513, issued on May 30, 2006. Check the license (California G75391, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1215984513
Name
John C. Chow
Credential
M.D.
Primary taxonomy
Legal Medicine 173000000X
License number
G75391 CA
Self-reported in NPPES; status is on the state search
Practice location
101 S San Mateo Drive, San Mateo, CA 94401
Phone
(650) 347-0063
Enumerated
May 30, 2006
Record last updated
May 31, 2012 (not updated in 14 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20081209000282); accepts Medicare assignment
Medical or professional school
Albany Medical College Of Union University, 1991
Telehealth
Offers telehealth (CMS)
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 John C. Chow in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license G75391
    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
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4.7 times the Medicare Part D claims of the average legal medicine in 2024

11,996 Medicare Part D claims for 936 beneficiaries, against an average of 2,531 among the 246 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 162 claims were for opioids.

  1. John Chow11,996
  2. Specialty average2,531

Most prescribed

  1. Atorvastatin Calcium1,121 claims
  2. Amlodipine Besylate978 claims
  3. Losartan Potassium682 claims
  4. Levothyroxine Sodium550 claims
  5. Metformin Hcl324 claims
  6. Simvastatin324 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $41.60

2 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 144 providers of this specialty with any payment received $4,618.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. John Chow$41.60
  2. Specialty average$4,618.84

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

John C. Chow among 112 legal medicine records in California

John C. Chow, M.D. is one of 112 legal medicine records with a practice address in California. 42% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 43% newer
  • In a Medicare fileYes · 42% of these records are
  • In the CMS Doctors and Clinicians fileYes · 21% of these records are
  • Graduated1991 · median 1984 among the 23 with a school on file
  • Record last updated2012 · 86% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 173000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Legal Medicine providers in California

There are 112 legal medicine records in California.

The 8 legal medicine records with the nearest ZIP codes

  1. Dominic Ho, M.D.San Mateo, CA 944011881610582
  2. Eric Poon, M.D.Antioch, CA 945091588751812
  3. Myhoang Nguyen, M.D.Pleasant Hill, CA 945231497794093
  4. Rashid Islam, COUSELORVallejo, CA 945901730391319
  5. Henry Edington, MDOakland, CA 946081356575146
  6. Mark Shelub, MDOakland, CA 946091093835605
  7. John Tang, M.D.San Francisco, CA 941331902916257
  8. Francisco GarciaSan Francisco, CA 941101689695124

Common questions

What is John C. Chow, M.D.'s NPI number?

John C. Chow, M.D.'s National Provider Identifier (NPI) is 1215984513, issued on May 30, 2006. An NPI identifies a provider in billing; it is not a license.

Where is John C. Chow, M.D. located?

The NPPES record lists a practice address at 101 S San Mateo Drive, San Mateo, CA, 94401. Phone: (650) 347-0063. Providers update this record themselves, so call before visiting.

How can I verify John C. Chow, M.D.'s license?

NPPES lists California license number G75391, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does John C. Chow, M.D. prescribe under Medicare Part D?

In 2024, John C. Chow, M.D. had 11,996 Medicare Part D claims for 936 beneficiaries; the average among legal medicine prescribers was 2,531. Part D covers Medicare prescriptions only.

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.