Caroline Hay, NP
NPI 1942174784 · Nurse Practitioner · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Caroline Hay, NP is a Nurse Practitioner provider in Ann Arbor, MI (NPI 1942174784).
Provider details
- NPI number
- 1942174784
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 4704343400 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1540 E Hospital DrAnn Arbor, MI 48109-4000Phone: (734) 936-4000
Registry dates
- Enumerated
- 2025-10-03
- Last updated
- 2026-01-19
- Certified
- 2026-01-19
Frequently asked questions
- What is Caroline Hay's NPI number?
- Caroline Hay's National Provider Identifier (NPI) is 1942174784, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Caroline Hay's specialty?
- Caroline Hay is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Caroline Hay located?
- Caroline Hay's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Caroline Hay's phone number?
- The practice phone number listed in the NPPES registry for Caroline Hay is (734) 936-5000.
- Does Caroline Hay accept Medicare?
- Caroline Hay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Caroline Hay's NPI active?
- Yes — Caroline Hay's NPI (1942174784) is active in the NPPES registry as of the last update on 2026-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.