Catherine Duffy, APRN-BC
NPI 1255488003 · Adult Health Nurse Practitioner · Danvers, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Duffy, APRN-BC is a Adult Health Nurse Practitioner provider in Danvers, MA (NPI 1255488003).
Provider details
- NPI number
- 1255488003
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 263001 (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 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
262 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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 71 | $114 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 65 | $153 |
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 41 | $166 |
| Residence Visit for New Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 75 Minutes99345 | 33 | $181 |
| Prolonged Hospital Inpatient Or Observation Care Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By ThG0316 | 25 | $27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-04
- Last updated
- 2015-04-17
Frequently asked questions
- What is Catherine Duffy's NPI number?
- Catherine Duffy's National Provider Identifier (NPI) is 1255488003, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Duffy's specialty?
- Catherine Duffy is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Catherine Duffy located?
- Catherine Duffy's practice location on file with NPPES is 75 Sylvan St Ste B102, Danvers, MA 01923-2764.
- What is Catherine Duffy's phone number?
- The practice phone number listed in the NPPES registry for Catherine Duffy is (978) 774-7566.
- Does Catherine Duffy accept Medicare?
- Catherine Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Duffy's NPI active?
- Yes — Catherine Duffy's NPI (1255488003) is active in the NPPES registry as of the last update on 2015-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.