Nathan Hao Hsin Yen, MD
Family Medicine Physician · Riverside, CA
Nathan Hao Hsin Yen, MD is a family medicine physician with a practice address in Riverside, California, and NPI 1013992338, issued on Dec 9, 2005. Check the license (California G72909, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathan Hao Hsin Yen
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G72909 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6405 Day St, Riverside, CA 92507
- Phone
- (951) 697-5427
- Enumerated
- Dec 9, 2005
- Record last updated
- Apr 11, 2025
- Fax
- (951) 697-5516
- Medicare enrollment
- Enrolled (PECOS I20081223000226); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 6405 Day St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nathan Hao Hsin Yen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G72909Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% more Medicare Part D claims than the average family medicine physician in 2024
4,877 Medicare Part D claims for 510 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 71 claims were for opioids.
Most prescribed
- Atorvastatin Calcium423 claims
- Amlodipine Besylate385 claims
- Lisinopril297 claims
- Losartan Potassium265 claims
- Metoprolol Succinate187 claims
- Metformin Hcl172 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.
Industry payments in 2024: $44.56
2 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Riverside Medical Clinic IncRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Hao Hsin Yen among 17,133 family medicine physician records in California
Nathan Hao Hsin Yen, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1990 · median 2005 among the 10,652 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
258 family medicine physician records list a practice address in Riverside
They are 258 of the 13,893 NPPES records with a practice address in Riverside, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Riverside → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Archana Bhanu, MDRiverside, CA 925071598748402
- German Crisol, M.D.Riverside, CA 925071952333650
- Reuel Gaskins, M.D.Riverside, CA 925071184713372
- Richard Guzman, MDRiverside, CA 925071336135169
- Louise Huang, MDRiverside, CA 925071831174150
- Grace Kumamoto, MDRiverside, CA 925071871578161
- Maha Manoharan, M.D.Riverside, CA 925071174634331
- John Molina, DORiverside, CA 925071770547523
Common questions
What is Nathan Hao Hsin Yen, MD's NPI number?
Nathan Hao Hsin Yen, MD's National Provider Identifier (NPI) is 1013992338, issued on Dec 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Hao Hsin Yen, MD located?
The NPPES record lists a practice address at 6405 Day St, Riverside, CA, 92507. Phone: (951) 697-5427. Providers update this record themselves, so call before visiting.
How can I verify Nathan Hao Hsin Yen, MD's license?
NPPES lists California license number G72909, 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 Nathan Hao Hsin Yen, MD prescribe under Medicare Part D?
In 2024, Nathan Hao Hsin Yen, MD had 4,877 Medicare Part D claims for 510 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.