Lynn K. Chang, MD
Surgery Physician · Redwood City, CA
Lynn K. Chang, MD is a surgery physician with a practice address in Redwood City, California, and NPI 1598843187, issued on Nov 1, 2006. Check the license (California A62936, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lynn K. Chang
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- A62936 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1150 Veterans Blvd, Redwood City, CA 94063
- Phone
- (650) 299-2000
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A629360 CA
- Medicare enrollment
- Enrolled (PECOS I20040827000505); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 1150 Veterans Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lynn K. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A62936Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average surgery physician in 2024
124 Medicare Part D claims for 55 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 45 claims were for opioids.
Most prescribed
- Ibuprofen41 claims
- Hydrocodone-Acetaminophen28 claims
- Oxycodone Hcl17 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
- Permanente Medical Group IncRedwood City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lynn K. Chang among 3,118 surgery physician records in California
Lynn K. Chang, MD is one of 3,118 surgery physician records with a practice address in California. 75% 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, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1995 · median 2003 among the 1,901 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Redwood City → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Harald Jasiulek, MDRedwood City, CA 940631417035064
- John Ngai, MDRedwood City, CA 940631538233846
- Ryan OuRedwood City, CA 940631457855074
- Jerome Stefanko, MDRedwood City, CA 940631861570459
- Derrick Taylor, MDRedwood City, CA 940631417035007
- Ryan Macht, M.D.Redwood City, CA 940621063711604
- Michael OholleranRedwood City, CA 940651003916321
- John Feng, MDSan Carlos, CA 940701275625832
Common questions
What is Lynn K. Chang, MD's NPI number?
Lynn K. Chang, MD's National Provider Identifier (NPI) is 1598843187, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lynn K. Chang, MD located?
The NPPES record lists a practice address at 1150 Veterans Blvd, Redwood City, CA, 94063. Phone: (650) 299-2000. Providers update this record themselves, so call before visiting.
How can I verify Lynn K. Chang, MD's license?
NPPES lists California license number A62936, 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 Lynn K. Chang, MD prescribe under Medicare Part D?
In 2024, Lynn K. Chang, MD had 124 Medicare Part D claims for 55 beneficiaries; the average among surgery physician prescribers was 147. 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.