Ashwin Kashyap, M.D.
NPI 1861495475 · Hematology & Oncology Physician · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ashwin Kashyap, M.D. is a Hematology & Oncology Physician provider in Thousand Oaks, CA (NPI 1861495475).
Provider details
- NPI number
- 1861495475
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A52406 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
4,533 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 702 | $139 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 642 | $197 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 440 | $16 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 385 | $17 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 359 | $151 |
| Injection of Additional New Drug Or Substance Into Vein |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 40 | 11 |
| Tamoxifen Citrate | 35 | 12 |
| Ondansetron Hcl | 32 | 16 |
| Anastrozole | 26 | — |
| Hydroxyurea | 24 | — |
| Enzalutamidebrand: Xtandi | 20 | — |
| Dexamethasone | 19 | 11 |
| Lenalidomidebrand: Revlimid |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$151 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 555 Marin StSuite 200Thousand Oaks, CA 91360-4236Phone: (805) 496-0592Fax: (805) 494-4328
Registry dates
- Enumerated
- 2005-05-27
- Last updated
- 2022-03-23
- Certified
- 2022-03-23
Frequently asked questions
- What is Ashwin Kashyap's NPI number?
- Ashwin Kashyap's National Provider Identifier (NPI) is 1861495475, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ashwin Kashyap's specialty?
- Ashwin Kashyap is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ashwin Kashyap located?
- Ashwin Kashyap's practice location on file with NPPES is 425 Haaland Dr Ste 101, Thousand Oaks, CA 91361-5230.
- What is Ashwin Kashyap's phone number?
- The practice phone number listed in the NPPES registry for Ashwin Kashyap is (805) 496-2949.
- Does Ashwin Kashyap accept Medicare?
- Ashwin Kashyap is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ashwin Kashyap's NPI active?
- Yes — Ashwin Kashyap's NPI (1861495475) is active in the NPPES registry as of the last update on 2022-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.