Cecilia Tien Dinh, D.O.
Family Medicine Physician · Costa Mesa, CA
Cecilia Tien Dinh, D.O. is a family medicine physician with a practice address in Costa Mesa, California, and NPI 1831500917, issued on May 12, 2014. Check the license (California 20A15687, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cecilia Tien Dinh
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A15687 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1550 Superior Ave, Costa Mesa, CA 92627
- Phone
- (949) 270-2100
- Enumerated
- May 12, 2014
- Record last updated
- Feb 26, 2024
- Fax
- (949) 650-4458
- Medicare enrollment
- Enrolled (PECOS I20180917000474); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1550 Superior Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Cecilia Tien Dinh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A15687Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average family medicine physician in 2024
986 Medicare Part D claims for 166 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium91 claims
- Lisinopril62 claims
- Losartan Potassium41 claims
- Levothyroxine Sodium40 claims
- Metformin Hcl34 claims
- Famotidine31 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
- Share Our Selves CorporationCosta Mesa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cecilia Tien Dinh among 17,133 family medicine physician records in California
Cecilia Tien Dinh, 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 2014, is newer than 71% of them.
- NPI issued2014 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2014 · median 2005 among the 10,652 with a school on file
- Record last updated2024 · 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
- 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
- Zaid Noman, M.D.Costa Mesa, CA 926271306028907
Common questions
What is Cecilia Tien Dinh, D.O.'s NPI number?
Cecilia Tien Dinh, D.O.'s National Provider Identifier (NPI) is 1831500917, issued on May 12, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Cecilia Tien Dinh, D.O. located?
The NPPES record lists a practice address at 1550 Superior Ave, Costa Mesa, CA, 92627. Phone: (949) 270-2100. Providers update this record themselves, so call before visiting.
How can I verify Cecilia Tien Dinh, D.O.'s license?
NPPES lists California license number 20A15687, 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 Cecilia Tien Dinh, D.O. prescribe under Medicare Part D?
In 2024, Cecilia Tien Dinh, D.O. had 986 Medicare Part D claims for 166 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.