Kristi Hainstock, PHD
NPI 1639444391 · Psychologist · Bay City, MI
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kristi Hainstock, PHD is a Psychologist provider in Bay City, MI (NPI 1639444391).
Provider details
- NPI number
- 1639444391
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- 6301015359 (MI)
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
14 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
- 2012-03-14
- Last updated
- 2021-03-26
- Certified
- 2021-03-26
Frequently asked questions
- What is Kristi Hainstock's NPI number?
- Kristi Hainstock's National Provider Identifier (NPI) is 1639444391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kristi Hainstock's specialty?
- Kristi Hainstock is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Kristi Hainstock located?
- Kristi Hainstock's practice location on file with NPPES is 2919 Wilder Rd, Bay City, MI 48706-9299.
- What is Kristi Hainstock's phone number?
- The practice phone number listed in the NPPES registry for Kristi Hainstock is (989) 671-5757.
- Does Kristi Hainstock accept Medicare?
- Kristi Hainstock is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kristi Hainstock's NPI active?
- Yes — Kristi Hainstock's NPI (1639444391) is active in the NPPES registry as of the last update on 2021-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.