David C. Chang, MD
Geriatric Medicine (Family Medicine) Physician · Los Angeles, CA
David C. Chang, MD is a geriatric medicine (family medicine) physician with a practice address in Los Angeles, California, and NPI 1801968136, issued on Nov 14, 2006. Check the license (California G64480, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David C. Chang
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Family Medicine) Physician 207QG0300X
- License number
- G64480 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4733 W Sunset Blvd, Los Angeles, CA 90027
- Phone
- (323) 783-4011
- Enumerated
- Nov 14, 2006
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050907000615); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest geriatric medicine (family medicine) physician records → All 243 in California → Look up another NPI →
Also registered at 4733 W Sunset Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nancy Adachi, PTPhysical Therapist1902004245
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Verify David C. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G64480Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average geriatric medicine (family medicine) physician in 2024
2,095 Medicare Part D claims for 230 beneficiaries, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 55 claims were for opioids.
Most prescribed
- Atorvastatin Calcium192 claims
- Amlodipine Besylate98 claims
- Metoprolol Tartrate78 claims
- Levothyroxine Sodium74 claims
- Furosemide70 claims
- Potassium Chloride61 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: $57.32
3 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 460 providers of this specialty with any payment received $1,218.49 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David C. Chang among 243 geriatric medicine (family medicine) physician records in California
David C. Chang, MD is one of 243 geriatric medicine (family medicine) physician records with a practice address in California. 76% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 53% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 46% of these records are
- Graduated1987 · median 2004 among the 111 with a school on file
- Record last updated2021 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Family Medicine) Physician providers in California
There are 243 geriatric medicine (family medicine) physician records in California.
All 243 in California → Every provider in Los Angeles → Geriatric Medicine (Family Medicine) Physician nationwide →
The 8 geriatric medicine (family medicine) physician records with the nearest ZIP codes
- Andrea CiseLos Angeles, CA 900271700297710
- Peter Khang, MDLos Angeles, CA 900271609947670
- Eric KimLos Angeles, CA 900271275096489
- Kuo-Wei Lee, MDLos Angeles, CA 900271710047972
- Mario Milch, MDLos Angeles, CA 900271164599189
- Parmis Pouya, MDLos Angeles, CA 900271174690051
- William Reilly, MDLos Angeles, CA 900271407923402
- Allegra Rich, MDLos Angeles, CA 900271669549499
Common questions
What is David C. Chang, MD's NPI number?
David C. Chang, MD's National Provider Identifier (NPI) is 1801968136, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David C. Chang, MD located?
The NPPES record lists a practice address at 4733 W Sunset Blvd, Los Angeles, CA, 90027. Phone: (323) 783-4011. Providers update this record themselves, so call before visiting.
How can I verify David C. Chang, MD's license?
NPPES lists California license number G64480, 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 C. Chang, MD prescribe under Medicare Part D?
In 2024, David C. Chang, MD had 2,095 Medicare Part D claims for 230 beneficiaries; the average among geriatric medicine (family medicine) physician prescribers was 5,222. 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.