Roslyn Chaisanguanthum, M.D.
NPI 1174726954 · Specialist · Sylmar, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roslyn Chaisanguanthum, M.D. is a Specialist provider in Sylmar, CA (NPI 1174726954).
Provider details
- NPI number
- 1174726954
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD70065738 (WA)
Specialties & taxonomies
Other Service Providers
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 256 | 88 |
| Dexamethasone | 122 | 33 |
| Anastrozole | 65 | 24 |
| Abiraterone Acetate | 59 | — |
| Potassium Chloride | 43 | 17 |
| Lenalidomide | 42 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 40 | — |
| Prednisone |
Practice location
Mailing address
Additional practice locations (1)
- 201 16th Ave ESeattle, WA 98112-5226Phone: (206) 326-3000Fax: (877) 515-2975
Registry dates
- Enumerated
- 2007-06-07
- Last updated
- 2026-02-03
- Certified
- 2026-02-03
Frequently asked questions
- What is Roslyn Chaisanguanthum's NPI number?
- Roslyn Chaisanguanthum's National Provider Identifier (NPI) is 1174726954, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roslyn Chaisanguanthum's specialty?
- Roslyn Chaisanguanthum is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Roslyn Chaisanguanthum located?
- Roslyn Chaisanguanthum's practice location on file with NPPES is 14445 Olive View Dr, Sylmar, CA 91342-1437.
- What is Roslyn Chaisanguanthum's phone number?
- The practice phone number listed in the NPPES registry for Roslyn Chaisanguanthum is (818) 364-3205.
- Does Roslyn Chaisanguanthum accept Medicare?
- Roslyn Chaisanguanthum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roslyn Chaisanguanthum's NPI active?
- Yes — Roslyn Chaisanguanthum's NPI (1174726954) is active in the NPPES registry as of the last update on 2026-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.