David M. Chang, M.D.
Internal Medicine Physician · San Diego, CA
David M. Chang, M.D. is an internal medicine physician with a practice address in San Diego, California, and NPI 1073596342, issued on Nov 21, 2005. Check the license (California A43515, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David M. Chang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A43515 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6699 Alvarado RD Ste 2309, San Diego, CA 92120
- Phone
- (619) 286-8803
- Enumerated
- Nov 21, 2005
- Record last updated
- Apr 17, 2023
- Fax
- (619) 286-2344
- Medicaid ID
- 00A435150 CA
- Medicare enrollment
- Enrolled (PECOS I20101004000055); accepts Medicare assignment
- Medical or professional school
- Geisel School Of Medicine At Dartmouth, 1984
- Entity
- Type 1 · individual
Also registered at 6699 Alvarado RD Ste 2309
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Bill Mastrodimos, MDNeurological Surgery Physician1376691162
Verify David M. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A43515Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% more Medicare Part D claims than the average internal medicine physician in 2024
3,555 Medicare Part D claims for 241 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 37 claims were for opioids.
Most prescribed
- Levothyroxine Sodium167 claims
- Atorvastatin Calcium150 claims
- Amlodipine Besylate131 claims
- Losartan Potassium116 claims
- Lisinopril110 claims
- Azithromycin92 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.
The MIPS final score for 2023 (Medicare payment program): 34.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $794.50
36 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
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.
All 961 in San Diego → All 17,696 in California → Every provider in San Diego →
Other internal medicine physician records in California
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- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is David M. Chang, M.D.'s NPI number?
David M. Chang, M.D.'s National Provider Identifier (NPI) is 1073596342, issued on Nov 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David M. Chang, M.D. located?
The NPPES record lists a practice address at 6699 Alvarado RD Ste 2309, San Diego, CA, 92120. Phone: (619) 286-8803. Providers update this record themselves, so call before visiting.
How can I verify David M. Chang, M.D.'s license?
NPPES lists California license number A43515, 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 David M. Chang, M.D. prescribe under Medicare Part D?
In 2024, David M. Chang, M.D. had 3,555 Medicare Part D claims for 241 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is David M. Chang, M.D.'s MIPS final score?
The 2023 MIPS final score is 34.2 of 100. 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.