Michael Lynn Chang, D.O.
Family Medicine Physician · Laguna Hills, CA
Michael Lynn Chang, D.O. is a family medicine physician with a practice address in Laguna Hills, California, and NPI 1942543814, issued on Mar 29, 2013. Check the license (California 20A12673, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Lynn Chang
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A12673 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26538 Moulton Pkwy Ste 38E, Laguna Hills, CA 92653
- Phone
- (949) 448-0656
- Enumerated
- Mar 29, 2013
- Record last updated
- Jul 19, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20141002002549); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 26538 Moulton Pkwy Ste 38E
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Theodore Sy, MDGastroenterology Physician1003865627
Verify Michael Lynn Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A12673Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% more Medicare Part D claims than the average family medicine physician in 2024
4,660 Medicare Part D claims for 460 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 87 claims were for opioids.
Most prescribed
- Atorvastatin Calcium271 claims
- Levothyroxine Sodium230 claims
- Rosuvastatin Calcium219 claims
- Amlodipine Besylate174 claims
- Losartan Potassium166 claims
- Metformin Hcl128 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.
Bills Medicare through one group practice
- Memorialcare Medical FoundationLaguna Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Lynn Chang among 17,133 family medicine physician records in California
Michael Lynn Chang, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 68% of them.
- NPI issued2013 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2011 · median 2005 among the 10,652 with a school on file
- Record last updated2018 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
36 family medicine physician records list a practice address in Laguna Hills
They are 36 of the 2,069 NPPES records with a practice address in Laguna Hills, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Laguna Hills → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Connor, MDLaguna Hills, CA 926531578536553
- Bernard Elpedes, DOLaguna Hills, CA 926531831127497
- Mark Foster, M.D.Laguna Hills, CA 926531548338908
- Chee Ho, D.O.Laguna Hills, CA 926531609820083
- Judy Huynh, D.O.Laguna Hills, CA 926531316934284
- Henry Leung, D.O.Laguna Hills, CA 926531881662690
- Martin Louie, M.D.Laguna Hills, CA 926531770519621
- Lisa Majer, D.OLaguna Hills, CA 926531003990748
Common questions
What is Michael Lynn Chang, D.O.'s NPI number?
Michael Lynn Chang, D.O.'s National Provider Identifier (NPI) is 1942543814, issued on Mar 29, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Michael Lynn Chang, D.O. located?
The NPPES record lists a practice address at 26538 Moulton Pkwy Ste 38E, Laguna Hills, CA, 92653. Phone: (949) 448-0656. Providers update this record themselves, so call before visiting.
How can I verify Michael Lynn Chang, D.O.'s license?
NPPES lists California license number 20A12673, 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 Michael Lynn Chang, D.O. prescribe under Medicare Part D?
In 2024, Michael Lynn Chang, D.O. had 4,660 Medicare Part D claims for 460 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.