Hong J. Son, M.D.
Internal Medicine Physician · Roseville, CA
Hong J. Son, M.D. is an internal medicine physician with a practice address in Roseville, California, and NPI 1639515190, issued on May 10, 2013. Check the license (California A139188, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hong J. Son
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A139188 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1872 Granite Way, Roseville, CA 95747
- Phone
- (415) 308-4587
- Enumerated
- May 10, 2013
- Record last updated
- Dec 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170201001774); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Hong J. Son in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A139188Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average internal medicine physician in 2024
534 Medicare Part D claims for 212 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Atorvastatin Calcium38 claims
- Furosemide29 claims
- Cefpodoxime Proxetil25 claims
- Potassium Chloride24 claims
- Amlodipine Besylate20 claims
- Prednisone16 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 IncVallejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hong J. Son among 17,696 internal medicine physician records in California
Hong J. Son, 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 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
- Graduated2012 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
157 internal medicine physician records list a practice address in Roseville
They are 157 of the 5,340 NPPES records with a practice address in Roseville, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Roseville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lamar Alocozy, MDRoseville, CA 957471194475350
- Grant Campbell, MDRoseville, CA 957471861074510
- James Florencio Tamesis, M.D.Roseville, CA 957471568819050
- Steven Friend, MDRancho Cordova, CA 957421932289774
- Pamela Apolaya-Smith, MDElk Grove, CA 957571942436597
- Choon-Weng Chan, M.D.Elk Grove, CA 957571528088937
- Gaurav Datta, MDElk Grove, CA 957571225184765
- Wajahat Khan, M.D.Elk Grove, CA 957571851393540
Common questions
What is Hong J. Son, M.D.'s NPI number?
Hong J. Son, M.D.'s National Provider Identifier (NPI) is 1639515190, issued on May 10, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Hong J. Son, M.D. located?
The NPPES record lists a practice address at 1872 Granite Way, Roseville, CA, 95747. Phone: (415) 308-4587. Providers update this record themselves, so call before visiting.
How can I verify Hong J. Son, M.D.'s license?
NPPES lists California license number A139188, 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 Hong J. Son, M.D. prescribe under Medicare Part D?
In 2024, Hong J. Son, M.D. had 534 Medicare Part D claims for 212 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.