Alyssa Greineisen, PAY.D.
NPI 1912558982 · Clinical Psychologist · Hampton, VA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alyssa Greineisen, PAY.D. is a Clinical Psychologist provider in Hampton, VA (NPI 1912558982).
Provider details
- NPI number
- 1912558982
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PAY.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 0810006014 (VA)
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
6 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
- 2019-09-21
- Last updated
- 2025-03-19
- Certified
- 2025-03-19
Frequently asked questions
- What is Alyssa Greineisen's NPI number?
- Alyssa Greineisen's National Provider Identifier (NPI) is 1912558982, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alyssa Greineisen's specialty?
- Alyssa Greineisen is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Alyssa Greineisen located?
- Alyssa Greineisen's practice location on file with NPPES is 2202 Executive Dr Ste C, Hampton, VA 23666-6604.
- What is Alyssa Greineisen's phone number?
- The practice phone number listed in the NPPES registry for Alyssa Greineisen is (757) 827-7707.
- Does Alyssa Greineisen accept Medicare?
- Alyssa Greineisen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alyssa Greineisen's NPI active?
- Yes — Alyssa Greineisen's NPI (1912558982) is active in the NPPES registry as of the last update on 2025-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.