Stephanie Y. Kwan, MD, MTM
Radiation Oncology Physician · Loma Linda, CA
Stephanie Y. Kwan, MD, MTM is a radiation oncology physician with a practice address in Loma Linda, California, and NPI 1992360366, issued on May 1, 2019. Check the license (California A177183, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephanie Y. Kwan
- Credential
- MD, MTM
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A177183 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11234 Anderson St # B121, Loma Linda, CA 92354
- Phone
- (909) 558-8056
- Enumerated
- May 1, 2019
- Record last updated
- May 31, 2024
- Medicare enrollment
- Enrolled (PECOS I20240729001472); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Verify Stephanie Y. Kwan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A177183Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average radiation oncology physician in 2024
17 Medicare Part D claims for 14 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
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
- Faculty Physicians And Surgeons OF LlusmLoma Linda, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephanie Y. Kwan among 735 radiation oncology physician records in California
Stephanie Y. Kwan, MD, MTM 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 2019, is newer than 92% of them.
- NPI issued2019 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2019 · median 2005 among the 545 with a school on file
- Record last updated2024 · 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 Loma Linda → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- David Bush, M.D.Loma Linda, CA 923541114944782
- Ben Jabola, M.D.Loma Linda, CA 923541992721435
- Jessica Jutzy, MDLoma Linda, CA 923541821475393
- Joseph Kang, M.D., PH.D.Loma Linda, CA 923541730354929
- Lilia Loredo, M.D.Loma Linda, CA 923541437183449
- Ivan Namihas, M.D.Loma Linda, CA 923541285652495
- Jerry Slater, M.D.Loma Linda, CA 923541245258458
- Gary Yang, MDLoma Linda, CA 923541447231915
Common questions
What is Stephanie Y. Kwan, MD, MTM's NPI number?
Stephanie Y. Kwan, MD, MTM's National Provider Identifier (NPI) is 1992360366, issued on May 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Y. Kwan, MD, MTM located?
The NPPES record lists a practice address at 11234 Anderson St # B121, Loma Linda, CA, 92354. Phone: (909) 558-8056. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Y. Kwan, MD, MTM's license?
NPPES lists California license number A177183, 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 Stephanie Y. Kwan, MD, MTM prescribe under Medicare Part D?
In 2024, Stephanie Y. Kwan, MD, MTM had 17 Medicare Part D claims for 14 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.