Milton Bryant Chan, D.O.
Internal Medicine Physician · Union City, CA
Milton Bryant Chan, D.O. is an internal medicine physician with a practice address in Union City, California, and NPI 1144309832, issued on Nov 3, 2006. Check the license (California 20A8362, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Milton Bryant Chan
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A8362 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 3, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00AX83620 CA
- Medicare enrollment
- Enrolled (PECOS I20040622001679); accepts Medicare assignment
- Medical or professional school
- College Of Osteo Med Of The Pacific At Pomona, 2001
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
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 Milton Bryant Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A8362Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,509 Medicare Part D claims for 1,298 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 432 claims were for opioids.
Most prescribed
- Atorvastatin Calcium630 claims
- Amlodipine Besylate347 claims
- Lisinopril318 claims
- Atenolol292 claims
- Hydrocodone-Acetaminophen242 claims
- Losartan Potassium227 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 IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Milton Bryant Chan among 17,696 internal medicine physician records in California
Milton Bryant Chan, D.O. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2001 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (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 17,696 in California → Every provider in Union City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jaishree Acharya, M.D.Union City, CA 945871053334920
- Eric Brondfield, MDUnion City, CA 945871033297882
- Nefissa Chambi, M.D.Union City, CA 945871730157157
- Vanaja Chilukuri, M.D.Union City, CA 945871861578387
- Lolita Chiong, M.D.Union City, CA 945871558387027
- Amrita Deshpande, M.D.Union City, CA 945871154409910
- Apolinar Gacote, MDUnion City, CA 945871831203652
- Yasmeen Haq, MDUnion City, CA 945871457303935
Common questions
What is Milton Bryant Chan, D.O.'s NPI number?
Milton Bryant Chan, D.O.'s National Provider Identifier (NPI) is 1144309832, issued on Nov 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Milton Bryant Chan, D.O. 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 Milton Bryant Chan, D.O.'s license?
NPPES lists California license number 20A8362, 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 Milton Bryant Chan, D.O. prescribe under Medicare Part D?
In 2024, Milton Bryant Chan, D.O. had 7,509 Medicare Part D claims for 1,298 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.