Mary Anne Fenton, M.D.
NPI 1881606622 · Hematology & Oncology Physician · Providence, RI
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Anne Fenton, M.D. is a Hematology & Oncology Physician provider in Providence, RI (NPI 1881606622).
Provider details
- NPI number
- 1881606622
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD10307 (RI)
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
315 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 107 | $96 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 76 | $65 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 47 | $143 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 29 | $96 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 23 | $180 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 459 | 138 |
| Letrozole | 102 | 26 |
| Palbociclibbrand: Ibrance | 61 | — |
| Exemestane | 40 | — |
| Tamoxifen Citrate | 34 | 13 |
| Ondansetron Hcl | 34 | 22 |
| Dexamethasone | 27 | 12 |
| Abemaciclibbrand: Verzenio | 24 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Anne Fenton's NPI number?
- Mary Anne Fenton's National Provider Identifier (NPI) is 1881606622, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Anne Fenton's specialty?
- Mary Anne Fenton is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Anne Fenton located?
- Mary Anne Fenton's practice location on file with NPPES is 593 Eddy St, Providence, RI 02903-4923.
- What is Mary Anne Fenton's phone number?
- The practice phone number listed in the NPPES registry for Mary Anne Fenton is (401) 444-5391.
- Does Mary Anne Fenton accept Medicare?
- Mary Anne Fenton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Anne Fenton's NPI active?
- Yes — Mary Anne Fenton's NPI (1881606622) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.