Sarah Duffy
NPI 1528761616 · Family Nurse Practitioner · Danvers, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Duffy is a Family Nurse Practitioner provider in Danvers, MA (NPI 1528761616).
Provider details
- NPI number
- 1528761616
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- RN2337477 (MA)
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 tenure25% of score
3 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
15 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 15 | $104 |
Typical Medicare-allowed amounts for these services range $104–$104 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 37 | 36 |
| Prednisone | 32 | 31 |
| Gabapentin | 31 | — |
| Fluticasone Propionate | 26 | 15 |
| Escitalopram Oxalate | 24 | — |
| Azithromycin | 20 | 19 |
| Baclofen | 20 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$116 across 2 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
Additional practice locations (1)
- 147 S Main StMiddleton, MA 01949-2446Phone: (978) 774-2555Fax: (978) 774-8715
Registry dates
- Enumerated
- 2023-03-27
- Last updated
- 2025-12-02
- Certified
- 2025-12-02
Frequently asked questions
- What is Sarah Duffy's NPI number?
- Sarah Duffy's National Provider Identifier (NPI) is 1528761616, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Duffy's specialty?
- Sarah Duffy is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sarah Duffy located?
- Sarah Duffy's practice location on file with NPPES is 99 Conifer Hill Dr, Danvers, MA 01923-1193.
- What is Sarah Duffy's phone number?
- The practice phone number listed in the NPPES registry for Sarah Duffy is (978) 774-2555.
- Does Sarah Duffy accept Medicare?
- Sarah Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Duffy's NPI active?
- Yes — Sarah Duffy's NPI (1528761616) is active in the NPPES registry as of the last update on 2025-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.