Diana Okuniewski, D.O.
NPI 1184831547 · Obstetrics & Gynecology Physician · Marshall, MI
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Okuniewski, D.O. is a Obstetrics & Gynecology Physician provider in Marshall, MI (NPI 1184831547).
Provider details
- NPI number
- 1184831547
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- L1125376 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
19 yrs in NPPES 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)
- 1445 Sheldon RdSuite 301Grand Haven, MI 49417-2480Phone: (616) 847-2500Fax: (616) 847-6719
Registry dates
- Enumerated
- 2007-05-16
- Last updated
- 2025-05-23
- Certified
- 2025-05-23
Frequently asked questions
- What is Diana Okuniewski's NPI number?
- Diana Okuniewski's National Provider Identifier (NPI) is 1184831547, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Okuniewski's specialty?
- Diana Okuniewski is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Okuniewski located?
- Diana Okuniewski's practice location on file with NPPES is 215 E Mansion St Ste 3d, Marshall, MI 49068-1167.
- What is Diana Okuniewski's phone number?
- The practice phone number listed in the NPPES registry for Diana Okuniewski is (269) 558-0702.
- Does Diana Okuniewski accept Medicare?
- Diana Okuniewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Okuniewski's NPI active?
- Yes — Diana Okuniewski's NPI (1184831547) is active in the NPPES registry as of the last update on 2025-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.