Mary Ellen Madsen, PA
NPI 1861556433 · Physician Assistant · East Greenwich, RI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ellen Madsen, PA is a Physician Assistant provider in East Greenwich, RI (NPI 1861556433).
Provider details
- NPI number
- 1861556433
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- PA00106 (RI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
223 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 68 | $80 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 42 | $98 |
| Admn Sarscov2 Vacc 1 Dose90480 | 39 | $42 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus87426 | 31 | $35 |
| Administration of Influenza Virus VaccineG0008 | 29 | $32 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 14 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 34 | 34 |
| Methylprednisolone | 30 | 30 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 27 | 27 |
| Azithromycin | 23 | 22 |
| Fluticasone Propionate | 16 | 11 |
| Amoxicillin | 15 | 15 |
| Cephalexin | 13 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-20
- Last updated
- 2023-02-06
- Certified
- 2023-02-06
Frequently asked questions
- What is Mary Ellen Madsen's NPI number?
- Mary Ellen Madsen's National Provider Identifier (NPI) is 1861556433, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ellen Madsen's specialty?
- Mary Ellen Madsen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Ellen Madsen located?
- Mary Ellen Madsen's practice location on file with NPPES is 1285 S County Trl, East Greenwich, RI 02818-1620.
- What is Mary Ellen Madsen's phone number?
- The practice phone number listed in the NPPES registry for Mary Ellen Madsen is (401) 886-0902.
- Does Mary Ellen Madsen accept Medicare?
- Mary Ellen Madsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Ellen Madsen's NPI active?
- Yes — Mary Ellen Madsen's NPI (1861556433) is active in the NPPES registry as of the last update on 2023-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.