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Gerard Donnellan, PHD
NPI 1245388487 · Clinical Psychologist · Lexington, MA
Gerard Donnellan, PHD is a Clinical Psychologist provider in Lexington, MA (NPI 1245388487).
Provider details
- NPI number
- 1245388487
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2276 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
8 Minola Rd
Lexington, MA 02421-5512
Phone: (781) 863-5354
Fax: (781) 861-1639
Street-level locationGet directions
Mailing address
8 Minola Rd
Lexington, MA 02421-5512
Registry dates
- Enumerated
- 2007-01-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gerard Donnellan's NPI number?
- Gerard Donnellan's National Provider Identifier (NPI) is 1245388487, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerard Donnellan's specialty?
- Gerard Donnellan is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Gerard Donnellan located?
- Gerard Donnellan's practice location on file with NPPES is 8 Minola Rd, Lexington, MA 02421-5512.
- What is Gerard Donnellan's phone number?
- The practice phone number listed in the NPPES registry for Gerard Donnellan is (781) 863-5354.
- Is Gerard Donnellan's NPI active?
- Yes — Gerard Donnellan's NPI (1245388487) 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.