Michael Warren, PA
NPI 1265525877 · Physician Assistant · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Warren, PA is a Physician Assistant provider in Grand Rapids, MI (NPI 1265525877).
Provider details
- NPI number
- 1265525877
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- 5601002307 (MI)
Specialties & taxonomies
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
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
- 2006-10-02
- Last updated
- 2015-01-13
Frequently asked questions
- What is Michael Warren's NPI number?
- Michael Warren's National Provider Identifier (NPI) is 1265525877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Warren's specialty?
- Michael Warren is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Michael Warren located?
- Michael Warren's practice location on file with NPPES is 80 68th St Se, Grand Rapids, MI 49548-6980.
- What is Michael Warren's phone number?
- The practice phone number listed in the NPPES registry for Michael Warren is (616) 391-8274.
- Does Michael Warren accept Medicare?
- Michael Warren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Warren's NPI active?
- Yes — Michael Warren's NPI (1265525877) is active in the NPPES registry as of the last update on 2015-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.