Vanessa Nienhouse, M.D.
NPI 1225561335 · Obstetrics & Gynecology Physician · Rockford, IL
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vanessa Nienhouse, M.D. is a Obstetrics & Gynecology Physician provider in Rockford, IL (NPI 1225561335).
Provider details
- NPI number
- 1225561335
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036.157606 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
- 2017-04-05
- Last updated
- 2021-07-13
- Certified
- 2021-06-29
Frequently asked questions
- What is Vanessa Nienhouse's NPI number?
- Vanessa Nienhouse's National Provider Identifier (NPI) is 1225561335, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vanessa Nienhouse's specialty?
- Vanessa Nienhouse is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Vanessa Nienhouse located?
- Vanessa Nienhouse's practice location on file with NPPES is 1200 W State St, Rockford, IL 61102-2112.
- What is Vanessa Nienhouse's phone number?
- The practice phone number listed in the NPPES registry for Vanessa Nienhouse is (815) 490-1600.
- Does Vanessa Nienhouse accept Medicare?
- Vanessa Nienhouse is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vanessa Nienhouse's NPI active?
- Yes — Vanessa Nienhouse's NPI (1225561335) is active in the NPPES registry as of the last update on 2021-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.