Arun Kumar Arumugam Raajasekar, MD
NPI 1801143722 · Hematology & Oncology Physician · Mountain View, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Arun Kumar Arumugam Raajasekar, MD is a Hematology & Oncology Physician provider in Mountain View, CA (NPI 1801143722).
Provider details
- NPI number
- 1801143722
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A176019 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,270 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| 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 | 801 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 672 | $94 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 511 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 141 | $64 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 70 | $175 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 155 | 47 |
| Abiraterone Acetate | 147 | 25 |
| Prochlorperazine Maleate | 133 | 86 |
| Enzalutamidebrand: Xtandi | 130 | 16 |
| Ondansetron Hcl | 119 | 77 |
| Dexamethasone | 61 | 33 |
| Cabozantinib S-Malatebrand: Cabometyx | 46 | — |
Practice location
Mailing address
Additional practice locations (1)
- 815 Pollard RdLos Gatos, CA 95032-1438Phone: (408) 866-3989Fax: (408) 871-7433
Registry dates
- Enumerated
- 2012-08-09
- Last updated
- 2026-02-12
- Certified
- 2026-02-12
Frequently asked questions
- What is Arun Kumar Arumugam Raajasekar's NPI number?
- Arun Kumar Arumugam Raajasekar's National Provider Identifier (NPI) is 1801143722, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arun Kumar Arumugam Raajasekar's specialty?
- Arun Kumar Arumugam Raajasekar is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Arun Kumar Arumugam Raajasekar located?
- Arun Kumar Arumugam Raajasekar's practice location on file with NPPES is 2505 Hospital Dr, Mountain View, CA 94040-4127.
- What is Arun Kumar Arumugam Raajasekar's phone number?
- The practice phone number listed in the NPPES registry for Arun Kumar Arumugam Raajasekar is (650) 988-8338.
- Does Arun Kumar Arumugam Raajasekar accept Medicare?
- Arun Kumar Arumugam Raajasekar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Arun Kumar Arumugam Raajasekar's NPI active?
- Yes — Arun Kumar Arumugam Raajasekar's NPI (1801143722) is active in the NPPES registry as of the last update on 2026-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.