Nathalie T. Nguyen, MD
Radiation Oncology Physician · Rancho Cordova, CA
Nathalie T. Nguyen, MD is a radiation oncology physician with a practice address in Rancho Cordova, California, and NPI 1205890498, issued on Apr 14, 2006. Check the license (California A89545, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathalie T. Nguyen
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A89545 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10725 International Dr, Rancho Cordova, CA 95670
- Phone
- (916) 631-2730
- Enumerated
- Apr 14, 2006
- Record last updated
- Dec 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (916) 631-2710
- Medicaid ID
- 00A895450 CA
- Medicare enrollment
- Enrolled (PECOS I20050728000709); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 10725 International Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Venugopal Bellum, MDFamily Medicine Physician1225131105
- Ren Bernardo, M.D.Family Medicine Physician1639304389
Verify Nathalie T. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A89545Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average radiation oncology physician in 2024
438 Medicare Part D claims for 110 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 54 claims were for opioids.
Most prescribed
- Ssd52 claims
- Lidocaine Hcl Viscous50 claims
- Gabapentin36 claims
- Famotidine33 claims
- Fluconazole32 claims
- Acetaminophen-Codeine30 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 IncStockton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathalie T. Nguyen among 735 radiation oncology physician records in California
Nathalie T. Nguyen, MD is one of 735 radiation oncology physician records with a practice address in California. 83% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1999 · median 2005 among the 545 with a school on file
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in Rancho Cordova → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Rachel Chou, MDRancho Cordova, CA 956701740244094
- Darryl Hunter, MDRancho Cordova, CA 956701538247242
- Bihai Peng, MDRancho Cordova, CA 956701932287430
- Derrick Schmidt, MDRancho Cordova, CA 956701215016928
- Allan Chen, M.D.Roseville, CA 956781174506406
- Nima Harandi, MDRoseville, CA 956781124446307
- Derrick Koo, MDRoseville, CA 956781902984495
- Charlotte Kubicky, MD, PHDRoseville, CA 956611194935858
Common questions
What is Nathalie T. Nguyen, MD's NPI number?
Nathalie T. Nguyen, MD's National Provider Identifier (NPI) is 1205890498, issued on Apr 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nathalie T. Nguyen, MD located?
The NPPES record lists a practice address at 10725 International Dr, Rancho Cordova, CA, 95670. Phone: (916) 631-2730. Providers update this record themselves, so call before visiting.
How can I verify Nathalie T. Nguyen, MD's license?
NPPES lists California license number A89545, 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 Nathalie T. Nguyen, MD prescribe under Medicare Part D?
In 2024, Nathalie T. Nguyen, MD had 438 Medicare Part D claims for 110 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.