Hong-An Jan, M.D.
Specialist · Garden Grove, CA
Hong-An Jan, M.D. is a specialist with a practice address in Garden Grove, California, and NPI 1255332979, issued on Aug 3, 2005. Check the license (California A31743, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Hong-An Jan
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- A31743 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12555 Garden Grove Blvd, Garden Grove, CA 92843
- Phone
- (714) 538-1288
- Enumerated
- Aug 3, 2005
- Record last updated
- Oct 5, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (714) 538-4913
- Medicaid ID
- 00A317430 CA
- Medicare enrollment
- Enrolled (PECOS I20120425000614); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 12555 Garden Grove Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Annan, MDSpecialist1124010384
- Junghwan Choi, M.D.Urology Physician1255391710
- Raman Chopra, MDPediatrics Physician1093816738
- Michael Finney, M.D.Infectious Disease Physician1144323361
- Julie Hwynn, M.D.Internal Medicine Physician1780682401
- Francis Lee, MDSurgery Physician1720056781
Verify Hong-An Jan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A31743Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Specialist providers in California
There are 5,749 specialist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
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- Jonas AbellaSan Francisco, CA1679760938
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- Elaine AbichRiverside, CA1780458927
- Mussarat Abidi, MDLadera Ranch, CA1053307769
Common questions
What is Hong-An Jan, M.D.'s NPI number?
Hong-An Jan, M.D.'s National Provider Identifier (NPI) is 1255332979, issued on Aug 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Hong-An Jan, M.D. located?
The NPPES record lists a practice address at 12555 Garden Grove Blvd, Garden Grove, CA, 92843. Phone: (714) 538-1288. Providers update this record themselves, so call before visiting.
How can I verify Hong-An Jan, M.D.'s license?
NPPES lists California license number A31743, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.