Rajeswari Chellappah, M.D.
NPI 1770758617 · Hematology & Oncology Physician · Roseville, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rajeswari Chellappah, M.D. is a Hematology & Oncology Physician provider in Roseville, CA (NPI 1770758617).
Provider details
- NPI number
- 1770758617
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A-103454 (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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
888 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 576 | $189 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 198 | $135 |
| 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 | 51 | $17 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 46 | $226 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 17 | $176 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 136 | 49 |
| Letrozole | 98 | 27 |
| Potassium Chloride | 65 | 25 |
| Gabapentin | 58 | 16 |
| Apixabanbrand: Eliquis | 57 | 22 |
| Acyclovir | 41 | 11 |
| Ondansetron Hcl | 41 | 28 |
| Prochlorperazine Maleate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$24 across 1 record (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
Registry dates
- Enumerated
- 2008-04-22
- Last updated
- 2015-08-17
Frequently asked questions
- What is Rajeswari Chellappah's NPI number?
- Rajeswari Chellappah's National Provider Identifier (NPI) is 1770758617, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rajeswari Chellappah's specialty?
- Rajeswari Chellappah is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Rajeswari Chellappah located?
- Rajeswari Chellappah's practice location on file with NPPES is 2 Medical Plaza Dr, Roseville, CA 95661-3043.
- What is Rajeswari Chellappah's phone number?
- The practice phone number listed in the NPPES registry for Rajeswari Chellappah is (916) 782-5106.
- Does Rajeswari Chellappah accept Medicare?
- Rajeswari Chellappah is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rajeswari Chellappah's NPI active?
- Yes — Rajeswari Chellappah's NPI (1770758617) is active in the NPPES registry as of the last update on 2015-08-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.