John Hyung Sup Kim, M.D.
Obstetrics & Gynecology Physician · Union City, CA
John Hyung Sup Kim, M.D. is an obstetrics & gynecology physician with a practice address in Union City, California, and NPI 1679652317, issued on Nov 3, 2006. Check the license (California G81600, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Hyung Sup Kim
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G81600 CA
Self-reported in NPPES; status is on the state search - Practice location
- 33255 9TH St, Union City, CA 94587
- Phone
- (510) 471-5880
- Enumerated
- Nov 3, 2006
- Record last updated
- Dec 10, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00G816000 CA
- Medicare enrollment
- Enrolled (PECOS I20050104000796); accepts Medicare assignment
- Medical or professional school
- R Franklin University Of Med & Sci/Chicago Medical School, 1990
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 33255 9TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Veronica Acevedo, PAPhysician Assistant1174519060
- Alfredo AlvaradoCommunity Health Worker1104336429
- Madhumita Banerjee, ASWClinical Social Worker1164556023
- Bennie Brown, MDObstetrics & Gynecology Physician1750379509
- Martha Cline, NPNurse Practitioner1174511836
- Mary Dicou, FNP-CFamily Nurse Practitioner1134763238
Verify John Hyung Sup Kim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G81600Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
85 Medicare Part D claims for 45 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol17 claims
- Trospium Chloride15 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 IncFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Hyung Sup Kim among 5,088 obstetrics & gynecology physician records in California
John Hyung Sup Kim, M.D. 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1990 · median 2004 among the 2,700 with a school on file
- Record last updated2021 · 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).
13 obstetrics & gynecology physician records list a practice address in Union City
They are 13 of the 1,006 NPPES records with a practice address in Union City, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Union City → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Joseph Bachicha, M.D.Union City, CA 945871023180775
- Bennie Brown, MDUnion City, CA 945871750379509
- Charlotte Burke, M.D.Union City, CA 945871932387727
- Winnie Cheung, M.D.Union City, CA 945871124107271
- Harita DevireddyUnion City, CA 945871831480177
- Jennifer Isaacs, M.D.Union City, CA 945871972653798
- Mark Jacobs, M.D.San Leandro, CA 945871679533186
- Abigail Justiss, MDUnion City, CA 945871144664624
Common questions
What is John Hyung Sup Kim, M.D.'s NPI number?
John Hyung Sup Kim, M.D.'s National Provider Identifier (NPI) is 1679652317, issued on Nov 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Hyung Sup Kim, M.D. located?
The NPPES record lists a practice address at 33255 9TH St, Union City, CA, 94587. Phone: (510) 471-5880. Providers update this record themselves, so call before visiting.
How can I verify John Hyung Sup Kim, M.D.'s license?
NPPES lists California license number G81600, 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 John Hyung Sup Kim, M.D. prescribe under Medicare Part D?
In 2024, John Hyung Sup Kim, M.D. had 85 Medicare Part D claims for 45 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.