Ky Nam Bao Nguyen, M.D.
Radiation Oncology Physician · Sacramento, CA
Ky Nam Bao Nguyen, M.D. is a radiation oncology physician with a practice address in Sacramento, California, and NPI 1285011254, issued on Apr 29, 2015. Check the license (California A146042, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ky Nam Bao Nguyen
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A146042 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4501 X St, Sacramento, CA 95817
- Phone
- (408) 499-4595
- Enumerated
- Apr 29, 2015
- Record last updated
- Aug 3, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20201204002421); accepts Medicare assignment
- Medical or professional school
- University Of Toledo College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 4501 X St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristine Ahlberg, RNOncology Registered Nurse1982086567
- Danielle Baham, RDRegistered Dietitian1427533249
- Cheryl Breed, NPNurse Practitioner1760408959
- Laura Brennan, F.N.PFamily Nurse Practitioner1235389826
- Radha CanepaInternal Medicine Physician1760767511
- Sally Denardo, M.D.Internal Medicine Physician1568447878
Verify Ky Nam Bao Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A146042Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average radiation oncology physician in 2024
79 Medicare Part D claims for 46 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Ssd11 claims
- Tamsulosin Hcl11 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: $263.96
11 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 3,275 providers of this specialty with any payment received $1,897.85 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
- Regents OF The University OF CaliforniaMarysville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ky Nam Bao Nguyen among 735 radiation oncology physician records in California
Ky Nam Bao Nguyen, M.D. 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 2015, is newer than 82% of them.
- NPI issued2015 · 82% of these records are older, 16% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2015 · median 2005 among the 545 with a school on file
- Record last updated2020 · 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 Sacramento → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Ruben Fragoso, MD, PHDSacramento, CA 958171417154436
- Zelanna Goldberg, M.D.Sacramento, CA 958171669454385
- Arta Monjazeb, M.D., PH.D.Sacramento, CA 958171619136835
- Minahal NaveedSacramento, CA 958171356099592
- Tony Quang, M.D.Sacramento, CA 958171457334534
- Shyam Rao, M.D., PH.D.Sacramento, CA 958171265559694
- Richard Valicenti, M.D.Sacramento, CA 958171235152232
- Charles Wang, MD / PHDSacramento, CA 958171710650411
Common questions
What is Ky Nam Bao Nguyen, M.D.'s NPI number?
Ky Nam Bao Nguyen, M.D.'s National Provider Identifier (NPI) is 1285011254, issued on Apr 29, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Ky Nam Bao Nguyen, M.D. located?
The NPPES record lists a practice address at 4501 X St, Sacramento, CA, 95817. Phone: (408) 499-4595. Providers update this record themselves, so call before visiting.
How can I verify Ky Nam Bao Nguyen, M.D.'s license?
NPPES lists California license number A146042, 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 Ky Nam Bao Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Ky Nam Bao Nguyen, M.D. had 79 Medicare Part D claims for 46 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.