Michael J. Her, M.D.
Internal Medicine Physician · Buena Park, CA
Michael J. Her, M.D. is an internal medicine physician with a practice address in Buena Park, California, and NPI 1932156221, issued on May 30, 2006. Check the license (California C55223, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael J. Her
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C55223 CA
8763 NV
Self-reported in NPPES; status is on the state search - Practice location
- 6900 Lincoln Ave, Buena Park, CA 90620
- Phone
- (714) 522-4009
- Enumerated
- May 30, 2006
- Record last updated
- Dec 17, 2025
- Medicaid ID
- 1932156221 NV
- Medicare enrollment
- Enrolled (PECOS I20130320000112); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 6900 Lincoln Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Victor Caluya, MDInternal Medicine Physician1467457101
- Omar Fadeel, M.D.Internal Medicine Physician1922060086
- Ellen Park, N.PPrimary Care Nurse Practitioner1922559442
- Gina Rocillo, MDFamily Medicine Physician1811145113
Verify Michael J. Her in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C55223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,754 Medicare Part D claims for 386 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 171 claims were for opioids.
Most prescribed
- Atorvastatin Calcium501 claims
- Amlodipine Besylate339 claims
- Losartan Potassium270 claims
- Metformin Hcl239 claims
- Lisinopril224 claims
- Gabapentin183 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
- Healthcare Partners Affiliates Medical GroupAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael J. Her among 17,696 internal medicine physician records in California
Michael J. Her, M.D. 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
- Graduated1992 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
13 internal medicine physician records list a practice address in Buena Park
They are 13 of the 728 NPPES records with a practice address in Buena Park, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Buena Park → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Victor Caluya, MDBuena Park, CA 906201467457101
- Omar Fadeel, M.D.Buena Park, CA 906201922060086
- Richard Gonzales, MDBuena Park, CA 906201184685893
- Soledad Lee, MDBuena Park, CA 906201063609097
- Paul Chang, M.D.Buena Park, CA 906211487627261
- Edgardo Gonzalez, M.DBuena Park, CA 906211366514655
- Richard Han, M.D.Buena Park, CA 906211821061466
- Hoon Hong, M.D.Buena Park, CA 906211790758647
Common questions
What is Michael J. Her, M.D.'s NPI number?
Michael J. Her, M.D.'s National Provider Identifier (NPI) is 1932156221, issued on May 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael J. Her, M.D. located?
The NPPES record lists a practice address at 6900 Lincoln Ave, Buena Park, CA, 90620. Phone: (714) 522-4009. Providers update this record themselves, so call before visiting.
How can I verify Michael J. Her, M.D.'s license?
NPPES lists California license number C55223, 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 Michael J. Her, M.D. prescribe under Medicare Part D?
In 2024, Michael J. Her, M.D. had 6,754 Medicare Part D claims for 386 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.