Cindy Tammy Yang, MD
Family Medicine Physician · Costa Mesa, CA
Cindy Tammy Yang, MD is a family medicine physician with a practice address in Costa Mesa, California, and NPI 1881223048, issued on Apr 8, 2020. Check the license (California A176419, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cindy Tammy Yang
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A176419 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1640 Newport Blvd Ste 440, Costa Mesa, CA 92627
- Phone
- (949) 791-8888
- Enumerated
- Apr 8, 2020
- Record last updated
- Jan 9, 2026
- Fax
- (949) 298-9094
- Medicare enrollment
- Enrolled (PECOS I20230623001314); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1640 Newport Blvd Ste 440
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roxanne Stallworth, M.D., M.P.H.Internal Medicine Physician1366678906
Verify Cindy Tammy Yang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A176419Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average family medicine physician in 2024
601 Medicare Part D claims for 228 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Atorvastatin Calcium38 claims
- Amlodipine Besylate31 claims
- Fluticasone Propionate21 claims
- Amoxicillin-Clavulanate Potass20 claims
- Lidocaine Hcl Viscous19 claims
- Levothyroxine Sodium16 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 practice group's MIPS final score for 2023 (Medicare payment program): 76.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Southern California Permanente Medical GroupBellflower, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cindy Tammy Yang among 17,133 family medicine physician records in California
Cindy Tammy Yang, MD 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 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2020 · median 2005 among the 10,652 with a school on file
- Record last updated2026 · 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).
56 family medicine physician records list a practice address in Costa Mesa
They are 56 of the 4,286 NPPES records with a practice address in Costa Mesa, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Costa Mesa → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Isaac Beshay, MDCosta Mesa, CA 926271962434241
- Ricardo Davalos, M.D.San Clemente, CA 926271609804749
- Miguel Deperio, M.D.Costa Mesa, CA 926271336320688
- Cecilia Dinh, D.O.Costa Mesa, CA 926271831500917
- Jeffrey Felgner, M.D.Costa Mesa, CA 926271790122497
- Eric Huang, M.D.Costa Mesa, CA 926271356515365
- John Lalonde, D.O.Costa Mesa, CA 926271942388186
- Jay Lee, MD, MPHCosta Mesa, CA 926271548201726
Common questions
What is Cindy Tammy Yang, MD's NPI number?
Cindy Tammy Yang, MD's National Provider Identifier (NPI) is 1881223048, issued on Apr 8, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Cindy Tammy Yang, MD located?
The NPPES record lists a practice address at 1640 Newport Blvd Ste 440, Costa Mesa, CA, 92627. Phone: (949) 791-8888. Providers update this record themselves, so call before visiting.
How can I verify Cindy Tammy Yang, MD's license?
NPPES lists California license number A176419, 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 Cindy Tammy Yang, MD prescribe under Medicare Part D?
In 2024, Cindy Tammy Yang, MD had 601 Medicare Part D claims for 228 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Cindy Tammy Yang, MD's MIPS final score?
The 2023 MIPS final score is 76.7 of 100, reported for the practice group. 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.