Gwen Alter, PHD
NPI 1518989136 · Clinical Psychologist · Forest Hills, NY
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gwen Alter, PHD is a Clinical Psychologist provider in Forest Hills, NY (NPI 1518989136).
Provider details
- NPI number
- 1518989136
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- 010685 (NY)
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
- 2006-07-24
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gwen Alter's NPI number?
- Gwen Alter's National Provider Identifier (NPI) is 1518989136, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gwen Alter's specialty?
- Gwen Alter is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Gwen Alter located?
- Gwen Alter's practice location on file with NPPES is 11045 Queens Blvd, Forest Hills, NY 11375-5501.
- What is Gwen Alter's phone number?
- The practice phone number listed in the NPPES registry for Gwen Alter is (718) 575-0110.
- Does Gwen Alter accept Medicare?
- Gwen Alter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gwen Alter's NPI active?
- Yes — Gwen Alter's NPI (1518989136) 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.