Mary Gaffney, MD
NPI 1508166851 · Nephrology Physician · Warwick, RI
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Gaffney, MD is a Nephrology Physician provider in Warwick, RI (NPI 1508166851).
Provider details
- NPI number
- 1508166851
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD12813 (RI)
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
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
487 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 | 165 | $117 |
| 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 | 103 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 87 | $129 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 44 | $171 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 31 | $78 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 73 | 23 |
| Torsemide | 50 | 13 |
| Empagliflozinbrand: Jardiance | 42 | — |
| Dapagliflozin Propanediolbrand: Farxiga | 34 | — |
| Amlodipine Besylate | 32 | 12 |
| Furosemide | 28 | — |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$39 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
Additional practice locations (2)
- 593 Eddy StProvidence, RI 02903-4923Phone: (401) 444-4741Fax: (401) 444-4445
- 375 Wampanoag TrlRiverside, RI 02915-2232Phone: (401) 649-4060Fax: (401) 649-4061
Registry dates
- Enumerated
- 2010-11-02
- Last updated
- 2026-03-05
- Certified
- 2026-03-05
Frequently asked questions
- What is Mary Gaffney's NPI number?
- Mary Gaffney's National Provider Identifier (NPI) is 1508166851, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Gaffney's specialty?
- Mary Gaffney is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Gaffney located?
- Mary Gaffney's practice location on file with NPPES is 250 Centerville Rd Bldg E, Warwick, RI 02886-4400.
- What is Mary Gaffney's phone number?
- The practice phone number listed in the NPPES registry for Mary Gaffney is (401) 490-3838.
- Does Mary Gaffney accept Medicare?
- Mary Gaffney is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Gaffney's NPI active?
- Yes — Mary Gaffney's NPI (1508166851) is active in the NPPES registry as of the last update on 2026-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.