Barbara Grinwis, M.A., PA-C
NPI 1851423750 · Medical Physician Assistant · Grand Rapids, MI
Barbara Grinwis, M.A., PA-C is a Medical Physician Assistant provider in Grand Rapids, MI (NPI 1851423750).
Provider details
- NPI number
- 1851423750
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- M.A., PA-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 5601002045 (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
- 2007-03-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Barbara Grinwis's NPI number?
- Barbara Grinwis's National Provider Identifier (NPI) is 1851423750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Barbara Grinwis's specialty?
- Barbara Grinwis is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Barbara Grinwis located?
- Barbara Grinwis's practice location on file with NPPES is 522 Leonard St Nw, Grand Rapids, MI 49504-4258.
- What is Barbara Grinwis's phone number?
- The practice phone number listed in the NPPES registry for Barbara Grinwis is (616) 451-8868.
- Is Barbara Grinwis's NPI active?
- Yes — Barbara Grinwis's NPI (1851423750) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.