Sagar Nigwekar, MD
NPI 1710939848 · Nephrology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sagar Nigwekar, MD is a Nephrology Physician provider in Boston, MA (NPI 1710939848).
Provider details
- NPI number
- 1710939848
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 002578 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
20 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
706 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 | 284 | $124 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 162 | $82 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 121 | $138 |
| Hemodialysis Procedure With Physician Evaluation90935 | 39 | $74 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 25 | $121 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 49 | 14 |
| Furosemide | 21 | — |
| Dapagliflozin Propanediolbrand: Farxiga | 19 | — |
| Sevelamer Carbonate | 17 | — |
| Pantoprazole Sodium | 15 | — |
| Sucroferric Oxyhydroxidebrand: Velphoro | 14 | — |
| Amlodipine Besylate | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,476 across 5 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
- 2006-05-17
- Last updated
- 2013-06-12
Frequently asked questions
- What is Sagar Nigwekar's NPI number?
- Sagar Nigwekar's National Provider Identifier (NPI) is 1710939848, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sagar Nigwekar's specialty?
- Sagar Nigwekar is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Sagar Nigwekar located?
- Sagar Nigwekar's practice location on file with NPPES is 165 Cambridge St, Boston, MA 02114-2783.
- What is Sagar Nigwekar's phone number?
- The practice phone number listed in the NPPES registry for Sagar Nigwekar is (585) 729-8636.
- Does Sagar Nigwekar accept Medicare?
- Sagar Nigwekar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sagar Nigwekar's NPI active?
- Yes — Sagar Nigwekar's NPI (1710939848) is active in the NPPES registry as of the last update on 2013-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.