Patricia Duffy, PSY.D.
NPI 1851680631 · Psychologist · Lexington, MA
Enrolled with Medicare as Order and Referring Only - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patricia Duffy, PSY.D. is a Psychologist provider in Lexington, MA (NPI 1851680631).
Provider details
- NPI number
- 1851680631
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 9319 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-04-01
- Last updated
- 2011-04-01
Frequently asked questions
- What is Patricia Duffy's NPI number?
- Patricia Duffy's National Provider Identifier (NPI) is 1851680631, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patricia Duffy's specialty?
- Patricia Duffy is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Patricia Duffy located?
- Patricia Duffy's practice location on file with NPPES is 19 Muzzey St, Lexington, MA 02421-5256.
- What is Patricia Duffy's phone number?
- The practice phone number listed in the NPPES registry for Patricia Duffy is (781) 718-1061.
- Does Patricia Duffy accept Medicare?
- Patricia Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patricia Duffy's NPI active?
- Yes — Patricia Duffy's NPI (1851680631) is active in the NPPES registry as of the last update on 2011-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.