Cynthia Maria Chin, M.D.
Internal Medicine Physician · Union City, CA
Cynthia Maria Chin, M.D. is an internal medicine physician with a practice address in Union City, California, and NPI 1275611022, issued on Nov 1, 2006. Check the license (California A75344, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cynthia Maria Chin
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A75344 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3553 Whipple RD, Union City, CA 94587
- Phone
- (510) 454-1000
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A753440 CA
- Medicare enrollment
- Enrolled (PECOS I20110412000715); accepts Medicare assignment
- Medical or professional school
- Pennsylvania State University College Of Medicine, 1998
- Entity
- Type 1 · individual
Also registered at 3553 Whipple RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jaishree Acharya, M.D.Internal Medicine Physician1053334920
- Marie Agleham, MDAdult Medicine Physician1649298209
- Muhammad Aleem, M.D.Internal Medicine Physician1952480006
- Eleanor Anderson-Williams, M.D.Internal Medicine Physician1164576815
- Kristina Austin, M.D.Ophthalmology Physician1417007238
- Vijaya Basawaprasad, M.D.Internal Medicine Physician1588736326
Verify Cynthia Maria Chin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A75344Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average internal medicine physician in 2024
6,379 Medicare Part D claims for 764 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 320 claims were for opioids.
Most prescribed
- Atorvastatin Calcium571 claims
- Amlodipine Besylate323 claims
- Losartan Potassium323 claims
- Lisinopril247 claims
- Levothyroxine Sodium178 claims
- Metformin Hcl Er170 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.
Industry payments in 2024: $24.32
1 payment: food and beverage; the largest payer was Dexcom, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Permanente Medical Group IncUnion City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
46 internal medicine physician records list a practice address in Union City
They are 46 of the 1,006 NPPES records with a practice address in Union City, and 17,696 internal medicine physician records in California.
All 46 in Union City → All 17,696 in California → Every provider in Union City →
Other internal medicine physician records in California
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- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Cynthia Maria Chin, M.D.'s NPI number?
Cynthia Maria Chin, M.D.'s National Provider Identifier (NPI) is 1275611022, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia Maria Chin, M.D. located?
The NPPES record lists a practice address at 3553 Whipple RD, Union City, CA, 94587. Phone: (510) 454-1000. Providers update this record themselves, so call before visiting.
How can I verify Cynthia Maria Chin, M.D.'s license?
NPPES lists California license number A75344, 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 Maria Chin, M.D. prescribe under Medicare Part D?
In 2024, Cynthia Maria Chin, M.D. had 6,379 Medicare Part D claims for 764 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.