NPPES file of Aug 9, 2026

Matthew Chan

Internal Medicine Physician · San Diego, CA

Matthew Chan is an internal medicine physician with a practice address in San Diego, California, and NPI 1053060731, issued on Mar 21, 2022. Check the license (California PTL9829, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1053060731
Name
Matthew Chan
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
PTL9829 CA
Self-reported in NPPES; status is on the state search
Practice location
200 W Arbor Dr # MC8425, San Diego, CA 92103
Phone
(619) 543-6268
Enumerated
Mar 21, 2022
Record last updated
Mar 5, 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.
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Also registered at 200 W Arbor Dr # MC8425

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

  1. Sheyda Aboii, MD, PHDStudent in an Organized Health Care Education/Training Program1508704677
  2. Giacomo Adoncecchi, MDStudent in an Organized Health Care Education/Training Program1437918943
  3. Shadee Aghel, MDStudent in an Organized Health Care Education/Training Program1316885528
  4. Sultan Al AzzawiStudent in an Organized Health Care Education/Training Program1982552113
  5. Tanner Aldous, MDStudent in an Organized Health Care Education/Training Program1942001029
  6. Evan AlesStudent in an Organized Health Care Education/Training Program1265234769

Verify Matthew Chan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license PTL9829
    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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94% fewer Medicare Part D claims than the average internal medicine physician in 2024

192 Medicare Part D claims for 53 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Matthew Chan192
  2. Specialty average3,176

Most prescribed

  1. Losartan Potassium22 claims
  2. Atorvastatin Calcium19 claims
  3. Rosuvastatin Calcium14 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.

Matthew Chan among 17,696 internal medicine physician records in California

Matthew Chan is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 95% of them.

  • NPI issued2022 · 95% of these records are older, 2% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% 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 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

961 internal medicine physician records list a practice address in San Diego

They are 961 of the 52,937 NPPES records with a practice address in San Diego, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Hamid Amjadi, DOSan Diego, CA 921031700861333
  2. Donald Brandon, M.D.San Diego, CA 921031740272467
  3. Daniel Bressler, M.D.San Diego, CA 921031700887726
  4. Eric Dahms, M.D.San Diego, CA 921031306808464
  5. Janette Gray, M.D.San Diego, CA 921031295721876
  6. San Hsieh, MDSan Diego, CA 921031851388847
  7. Arthur Kingsbury, M.D.San Diego, CA 921031144216284
  8. Timothy O'Neill, M.D.San Diego, CA 921031831172295

Common questions

What is Matthew Chan's NPI number?

Matthew Chan's National Provider Identifier (NPI) is 1053060731, issued on Mar 21, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Chan located?

The NPPES record lists a practice address at 200 W Arbor Dr # MC8425, San Diego, CA, 92103. Phone: (619) 543-6268. Providers update this record themselves, so call before visiting.

How can I verify Matthew Chan's license?

NPPES lists California license number PTL9829, 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.

How much does Matthew Chan prescribe under Medicare Part D?

In 2024, Matthew Chan had 192 Medicare Part D claims for 53 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.