Peter Litwin, PSYD
NPI 1821026642 · Clinical Psychologist · Amesbury, MA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Litwin, PSYD is a Clinical Psychologist provider in Amesbury, MA (NPI 1821026642).
Provider details
- NPI number
- 1821026642
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- No
- License
- 8478 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-06-29
- Last updated
- 2007-07-08
Frequently asked questions
- What is Peter Litwin's NPI number?
- Peter Litwin's National Provider Identifier (NPI) is 1821026642, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Litwin's specialty?
- Peter Litwin is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Peter Litwin located?
- Peter Litwin's practice location on file with NPPES is 12 Market Sq, Amesbury, MA 01913-2442.
- What is Peter Litwin's phone number?
- The practice phone number listed in the NPPES registry for Peter Litwin is (978) 388-0799.
- Does Peter Litwin accept Medicare?
- Peter Litwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Litwin's NPI active?
- Yes — Peter Litwin's NPI (1821026642) 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.