Hyejo Jun, MD
Internal Medicine Physician · Rohnert Park, CA
Hyejo Jun, MD is an internal medicine physician with a practice address in Rohnert Park, California, and NPI 1982946547, issued on Mar 21, 2013. Check the license (California C197903, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hyejo Jun
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C197903 CA
63325 MN
Self-reported in NPPES; status is on the state search - Practice location
- 5900 State Farm Dr, Rohnert Park, CA 94928
- Phone
- (707) 206-3044
- Enumerated
- Mar 21, 2013
- Record last updated
- Sep 9, 2024
- Medicare enrollment
- Enrolled (PECOS I20240917000252); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 5900 State Farm Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Hyejo Jun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C197903Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average internal medicine physician in 2024
595 Medicare Part D claims for 161 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 28 claims were for opioids.
Most prescribed
- Atorvastatin Calcium52 claims
- Losartan Potassium31 claims
- Lisinopril23 claims
- Hydrocodone-Acetaminophen19 claims
- Levothyroxine Sodium15 claims
- Hydrochlorothiazide14 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 IncSanta Rosa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hyejo Jun among 17,696 internal medicine physician records in California
Hyejo Jun, MD 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 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2013 · median 2004 among the 11,065 with a school on file
- Record last updated2024 · 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).
9 internal medicine physician records list a practice address in Rohnert Park
They are 9 of the 483 NPPES records with a practice address in Rohnert Park, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Rohnert Park → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nana Barnes, MDRohnert Park, CA 949281063900520
- Michael Bunce, MDRohnert Park, CA 949281740369875
- Sara Ganeless Levine, MDRohnert Park, CA 949281326122490
- Steven Gelber, M.D.Rohnert Park, CA 949281144495326
- Paul Johnson, MDRohnert Park, CA 949281881778876
- Arnold Loo, D.O.Rohnert Park, CA 949281063716918
- Nicholas Regennitter, MDRohnert Park, CA 949281013591031
- Bridgit Travinsky, M.D.Rohnert Park, CA 949281295153930
Common questions
What is Hyejo Jun, MD's NPI number?
Hyejo Jun, MD's National Provider Identifier (NPI) is 1982946547, issued on Mar 21, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Hyejo Jun, MD located?
The NPPES record lists a practice address at 5900 State Farm Dr, Rohnert Park, CA, 94928. Phone: (707) 206-3044. Providers update this record themselves, so call before visiting.
How can I verify Hyejo Jun, MD's license?
NPPES lists California license number C197903, 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 Hyejo Jun, MD prescribe under Medicare Part D?
In 2024, Hyejo Jun, MD had 595 Medicare Part D claims for 161 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.