Jee Hoon Jang, MD
Internal Medicine Physician · Simi Valley, CA
Jee Hoon Jang, MD is an internal medicine physician with a practice address in Simi Valley, California, and NPI 1639691579, issued on Jul 12, 2017. Check the license (California A173800, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jee Hoon Jang
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A173800 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1424 Madera RD, Simi Valley, CA 93065
- Phone
- (805) 522-5722
- Enumerated
- Jul 12, 2017
- Record last updated
- Jan 8, 2026
- Fax
- (805) 915-4141
- Medicare enrollment
- Enrolled (PECOS I20220722002721); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1424 Madera RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Burbano Pimentle, PHYSICIAN ASSISTANTPhysician Assistant1336773811
- Everardo Camacho, DCChiropractor1659061265
- Betty Gutman, LCSWClinical Social Worker1023199510
- Leyla LeedsDentist1568668606
- Charles NguyenChiropractor1972716942
- Kelsi Rau, RN, NPNurse Practitioner1972173359
Verify Jee Hoon Jang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A173800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% more Medicare Part D claims than the average internal medicine physician in 2024
5,716 Medicare Part D claims for 387 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. 106 claims were for opioids.
Most prescribed
- Atorvastatin Calcium540 claims
- Amlodipine Besylate299 claims
- Metformin Hcl284 claims
- Losartan Potassium193 claims
- Tamsulosin Hcl170 claims
- Omeprazole160 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
- Clinicas Del Camino Real IncSimi Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
25 internal medicine physician records list a practice address in Simi Valley
They are 25 of the 1,397 NPPES records with a practice address in Simi Valley, and 17,696 internal medicine physician records in California.
All 25 in Simi Valley → All 17,696 in California → Every provider in Simi Valley →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Jee Hoon Jang, MD's NPI number?
Jee Hoon Jang, MD's National Provider Identifier (NPI) is 1639691579, issued on Jul 12, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jee Hoon Jang, MD located?
The NPPES record lists a practice address at 1424 Madera RD, Simi Valley, CA, 93065. Phone: (805) 522-5722. Providers update this record themselves, so call before visiting.
How can I verify Jee Hoon Jang, MD's license?
NPPES lists California license number A173800, 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 Jee Hoon Jang, MD prescribe under Medicare Part D?
In 2024, Jee Hoon Jang, MD had 5,716 Medicare Part D claims for 387 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.