Hannah Hyochan Nam, M.D.
Infectious Disease Physician · Orange, CA
Hannah Hyochan Nam, M.D. is an infectious disease physician with a practice address in Orange, California, and NPI 1477829190, issued on Mar 27, 2012. Check the license (California A169099, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hannah Hyochan Nam
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A169099 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 The City Dr S, Orange, CA 92868
- Phone
- (714) 456-8000
- Enumerated
- Mar 27, 2012
- Record last updated
- Aug 29, 2023
- Medicaid ID
- 1477829190 WI
- Medicare enrollment
- Enrolled (PECOS I20200807002814); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 101 The City Dr S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danny Abad, PAPhysician Assistant1477158673
- Edward AbaradoStudent in an Organized Health Care Education/Training Program1912855198
- Nagina Abdiani, DOGeriatric Medicine (Family Medicine) Physician1518543271
- Mariam Abdul-Latif, M.D.Pediatrics Physician1538418884
- Eric AbelloOtolaryngology Physician1922566215
- Brandon Abeyta, MDAnesthesiology Physician1841291804
Verify Hannah Hyochan Nam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A169099Check 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 infectious disease physician in 2024
207 Medicare Part D claims for 39 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Isoniazid34 claims
- Colistimethate29 claims
- Sulfamethoxazole-Trimethoprim12 claims
- Loperamide11 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 MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- UC RegentsOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hannah Hyochan Nam among 1,119 infectious disease physician records in California
Hannah Hyochan Nam, M.D. is one of 1,119 infectious disease 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 2012, is newer than 74% of them.
- NPI issued2012 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2012 · median 2003 among the 735 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Orange → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Rosa Andrade, MDOrange, CA 928681093919680
- Robert Armen, M.D.Orange, CA 928681225041080
- Thomas C Cesario, MDOrange, CA 928681265512354
- Coleen Cunningham, M.D.Orange, CA 928681205999075
- Catherine Diamond, MDOrange, CA 928681649350786
- Donald N Forthal, MDOrange, CA 928681215017363
- Shruti Gohil, M.D., M.P.H.Orange, CA 928681851375398
- Geeta K Gupta, MDOrange, CA 928681558441600
Common questions
What is Hannah Hyochan Nam, M.D.'s NPI number?
Hannah Hyochan Nam, M.D.'s National Provider Identifier (NPI) is 1477829190, issued on Mar 27, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Hannah Hyochan Nam, M.D. located?
The NPPES record lists a practice address at 101 The City Dr S, Orange, CA, 92868. Phone: (714) 456-8000. Providers update this record themselves, so call before visiting.
How can I verify Hannah Hyochan Nam, M.D.'s license?
NPPES lists California license number A169099, 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 Hannah Hyochan Nam, M.D. prescribe under Medicare Part D?
In 2024, Hannah Hyochan Nam, M.D. had 207 Medicare Part D claims for 39 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Hannah Hyochan Nam, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. 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.