Trevor Zajac, MD
NPI 1831942226 · Neurology with Special Qualifications in Child Neurology Physician · Grand Rapids, MI
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Trevor Zajac, MD is a Neurology with Special Qualifications in Child Neurology Physician provider in Grand Rapids, MI (NPI 1831942226).
Provider details
- NPI number
- 1831942226
- Entity type
- Individual
- Primary specialty
- Neurology with Special Qualifications in Child Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4351052971 (MI)
Specialties & taxonomies
- Neurology with Special Qualifications in Child Neurology PhysicianPrimary2084N0402XLicense 4351052971 (MI)
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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
- 2024-04-08
- Last updated
- 2026-05-11
- Certified
- 2026-05-11
Frequently asked questions
- What is Trevor Zajac's NPI number?
- Trevor Zajac's National Provider Identifier (NPI) is 1831942226, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Trevor Zajac's specialty?
- Trevor Zajac is listed in the NPPES registry with a primary specialty of Neurology with Special Qualifications in Child Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Trevor Zajac located?
- Trevor Zajac's practice location on file with NPPES is 35 Michigan St Ne Ste 3003, Grand Rapids, MI 49503-2528.
- What is Trevor Zajac's phone number?
- The practice phone number listed in the NPPES registry for Trevor Zajac is (616) 267-2500.
- Does Trevor Zajac accept Medicare?
- Trevor Zajac is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Trevor Zajac's NPI active?
- Yes — Trevor Zajac's NPI (1831942226) is active in the NPPES registry as of the last update on 2026-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.