Rangashree Varadarajan, MD
NPI 1164884623 · Nephrology Physician · Hayward, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rangashree Varadarajan, MD is a Nephrology Physician provider in Hayward, CA (NPI 1164884623).
Provider details
- NPI number
- 1164884623
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A161306 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 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
91 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 70 | $113 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 21 | $165 |
Typical Medicare-allowed amounts for these services range $113–$165 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
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 |
|---|---|---|
| Losartan Potassium | 98 | 42 |
| Amlodipine Besylate | 96 | 49 |
| Furosemide | 49 | 28 |
| Empagliflozinbrand: Jardiance | 48 | 21 |
| Calcium Acetate | 45 | 26 |
| Tamsulosin Hcl | 43 | 18 |
| Sevelamer Carbonate | 38 | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$12 across 4 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
Registry dates
- Enumerated
- 2016-03-24
- Last updated
- 2023-12-13
- Certified
- 2023-12-13
Frequently asked questions
- What is Rangashree Varadarajan's NPI number?
- Rangashree Varadarajan's National Provider Identifier (NPI) is 1164884623, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rangashree Varadarajan's specialty?
- Rangashree Varadarajan is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Rangashree Varadarajan located?
- Rangashree Varadarajan's practice location on file with NPPES is 27303 Sleepy Hollow Ave S, Hayward, CA 94545-4203.
- What is Rangashree Varadarajan's phone number?
- The practice phone number listed in the NPPES registry for Rangashree Varadarajan is (510) 784-2769.
- Does Rangashree Varadarajan accept Medicare?
- Rangashree Varadarajan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rangashree Varadarajan's NPI active?
- Yes — Rangashree Varadarajan's NPI (1164884623) is active in the NPPES registry as of the last update on 2023-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.