Vanessa Nienhouse, M.D.
Obstetrics & Gynecology Physician · Rockford, IL
Vanessa Nienhouse, M.D. is an obstetrics & gynecology physician with a practice address in Rockford, Illinois, and NPI 1225561335, issued on Apr 5, 2017. Check the license (Illinois 036.157606, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Vanessa Nienhouse
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036.157606 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1200 W State St, Rockford, IL 61102
- Phone
- (815) 490-1600
- Enumerated
- Apr 5, 2017
- Record last updated
- Jul 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (815) 490-1881
- Medicare enrollment
- Enrolled (PECOS I20211011002145); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2017
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 1200 W State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Antoun Al Khabbaz, MDObstetrics & Gynecology Physician1992797260
- Shamshad Anjum, MDFamily Medicine Physician1487753596
- Rachel Arredondo, APNFamily Nurse Practitioner1801515846
- Bakytbubu Arynova, M.D.Obstetrics & Gynecology Physician1124467253
- Uzma Asad, MDFamily Medicine Physician1255902797
- Adekola Ashaye, MDInternal Medicine Physician1003899162
Verify Vanessa Nienhouse in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.157606Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
13 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Freeport Memorial HospitalFreeport, IL
- Freeport Regional Health Care FoundationFreeport, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vanessa Nienhouse among 2,062 obstetrics & gynecology physician records in Illinois
Vanessa Nienhouse, M.D. is one of 2,062 obstetrics & gynecology physician records with a practice address in Illinois. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 76% of them.
- NPI issued2017 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2017 · median 2006 among the 1,168 with a school on file
- Record last updated2021 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Illinois
There are 2,062 obstetrics & gynecology physician records in Illinois.
All 2,062 in Illinois → Every provider in Rockford → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Antoun Al Khabbaz, MDRockford, IL 611021992797260
- Bakytbubu Arynova, M.D.Rockford, IL 611021124467253
- Cornita Cannon, M.D.Rockford, IL 611021013595297
- Zakera Nanabawa, M.D.Rockford, IL 611021336370188
- May Samaan, MDRockford, IL 611021548823495
- Madeline Wetterhahn, MD MPHRockford, IL 611021982166195
- Michelle D'Almeida, DORockford, IL 611031508976796
- Lester Jurgens, M.D.Rockford, IL 611031023047156
Common questions
What is Vanessa Nienhouse, M.D.'s NPI number?
Vanessa Nienhouse, M.D.'s National Provider Identifier (NPI) is 1225561335, issued on Apr 5, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Vanessa Nienhouse, M.D. located?
The NPPES record lists a practice address at 1200 W State St, Rockford, IL, 61102. Phone: (815) 490-1600. Providers update this record themselves, so call before visiting.
How can I verify Vanessa Nienhouse, M.D.'s license?
NPPES lists Illinois license number 036.157606, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Vanessa Nienhouse, M.D. prescribe under Medicare Part D?
In 2024, Vanessa Nienhouse, M.D. had 13 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.