Cynthia Dang Nguyen, DO
Obstetrics & Gynecology Physician · Pasadena, CA
Cynthia Dang Nguyen, DO is an obstetrics & gynecology physician with a practice address in Pasadena, California, and NPI 1679078018, issued on Mar 28, 2018. Check the license (California 20144, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cynthia Dang Nguyen
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 20144 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10 Congress St Ste 505, Pasadena, CA 91105
- Phone
- (626) 792-0110
- Enumerated
- Mar 28, 2018
- Record last updated
- Nov 8, 2022
- Medicare enrollment
- Enrolled (PECOS I20220924000216); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 10 Congress St Ste 505
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley Benda, D.O.Obstetrics & Gynecology Physician1295129856
- Morgan Borden, DOObstetrics & Gynecology Physician1457691388
- Kristin Simmons, NPFamily Nurse Practitioner1073087193
- Deborah Yu, M.D.Obstetrics & Gynecology Physician1205907342
Verify Cynthia Dang Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20144Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
49 Medicare Part D claims for 22 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of 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): 90.8 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
- Regents OF The University OF California Los AngelesPasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cynthia Dang Nguyen among 5,088 obstetrics & gynecology physician records in California
Cynthia Dang Nguyen, DO is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 90% of them.
- NPI issued2018 · 90% of these records are older, 8% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2018 · median 2004 among the 2,700 with a school on file
- Record last updated2022 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Pasadena → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Ebenezer Ajilore, M.D.Pasadena, CA 911051891787537
- Jennie Chang, M.D.Pasadena, CA 911051982668422
- Della Fong, M.D.Pasadena, CA 911051700813359
- Melissa Grier, M.D.Pasadena, CA 911051861484420
- Wilbert Henneberg, MDPasadena, CA 911051265433155
- Bryan Jick, MDPasadena, CA 911051720051436
- Joseph Li, M.D.Pasadena, CA 911051770573941
- James Macer, MDPasadena, CA 911051134129711
Common questions
What is Cynthia Dang Nguyen, DO's NPI number?
Cynthia Dang Nguyen, DO's National Provider Identifier (NPI) is 1679078018, issued on Mar 28, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia Dang Nguyen, DO located?
The NPPES record lists a practice address at 10 Congress St Ste 505, Pasadena, CA, 91105. Phone: (626) 792-0110. Providers update this record themselves, so call before visiting.
How can I verify Cynthia Dang Nguyen, DO's license?
NPPES lists California license number 20144, 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 Cynthia Dang Nguyen, DO prescribe under Medicare Part D?
In 2024, Cynthia Dang Nguyen, DO had 49 Medicare Part D claims for 22 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Cynthia Dang Nguyen, DO's MIPS final score?
The 2023 MIPS final score is 90.8 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.