Roslyn Mianglee Chaisanguanthum, M.D.
Specialist · Sylmar, CA
Roslyn Mianglee Chaisanguanthum, M.D. is a specialist with a practice address in Sylmar, California, and NPI 1174726954, issued on Jun 7, 2007. Check the license (California A84781, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Roslyn Mianglee Chaisanguanthum
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License numbers
- A84781 CA
MD70065738 WA
Self-reported in NPPES; status is on the state search - Practice location
- 14445 Olive View Dr, Sylmar, CA 91342
- Phone
- (818) 364-3205
- Enumerated
- Jun 7, 2007
- Record last updated
- Feb 3, 2026
- Medicare enrollment
- Enrolled (PECOS I20080509000700); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 14445 Olive View Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nasser Abdo, MDInternal Medicine Physician1306911649
- Gezman Abdullahi, M.D.Internal Medicine Physician1225394380
- Moyosore Abere, NPNurse Practitioner1225667314
- Ammini Abraham, MDAnesthesiology Physician1467531541
- Margarita Acosta, RN, AGACNPAcute Care Nurse Practitioner1609202415
- Fredric Adler, MDInternal Medicine Physician1356376735
Verify Roslyn Mianglee Chaisanguanthum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A84781Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% fewer Medicare Part D claims than the average specialist in 2024
1,320 Medicare Part D claims for 248 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. 45 claims were for opioids.
Most prescribed
- Letrozole256 claims
- Dexamethasone122 claims
- Anastrozole65 claims
- Abiraterone Acetate59 claims
- Potassium Chloride43 claims
- Lenalidomide42 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
- Southern California Permanente Medical GroupHarbor City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Roslyn Mianglee Chaisanguanthum among 5,749 specialist records in California
Roslyn Mianglee Chaisanguanthum, M.D. is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 44% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated2002 · median 1989 among the 1,075 with a school on file
- Record last updated2026 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Sylmar → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Alvin Chin, M.D.Sylmar, CA 913421013072073
- Stanley Dea, M.D.Sylmar, CA 913421134165467
- Jaziel Rodriguez-Lara, MDSylmar, CA 913421962989533
- Charles Rosenbaum, M.DSylmar, CA 913421134141518
- Maria-Teresa TalatalaSylmar, CA 913421831589001
- Felix Leung, M.D.Sepulveda, CA 913431811078348
- Mark Rosenthal, M.D.Sepulveda, CA 913431811084536
- Linda Sohn, MD, MPHSepulveda, CA 913431679671812
Common questions
What is Roslyn Mianglee Chaisanguanthum, M.D.'s NPI number?
Roslyn Mianglee Chaisanguanthum, M.D.'s National Provider Identifier (NPI) is 1174726954, issued on Jun 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Roslyn Mianglee Chaisanguanthum, M.D. located?
The NPPES record lists a practice address at 14445 Olive View Dr, Sylmar, CA, 91342. Phone: (818) 364-3205. Providers update this record themselves, so call before visiting.
How can I verify Roslyn Mianglee Chaisanguanthum, M.D.'s license?
NPPES lists California license number A84781, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Roslyn Mianglee Chaisanguanthum, M.D. prescribe under Medicare Part D?
In 2024, Roslyn Mianglee Chaisanguanthum, M.D. had 1,320 Medicare Part D claims for 248 beneficiaries; the average among specialist prescribers was 1,380. 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.