Maryann Oyinkeprebi Van Ryn
Family Nurse Practitioner · Springfield, IL
Maryann Oyinkeprebi Van Ryn is a family nurse practitioner with a practice address in Springfield, Illinois, and NPI 1295473296, issued on May 20, 2022. Check the license (Illinois 209.028117, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maryann Oyinkeprebi Van Ryn
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209.028117 IL
Self-reported in NPPES; status is on the state search - Practice location
- 751 N Rutledge St Ste 2100, Springfield, IL 62702
- Phone
- (217) 545-8000
- Enumerated
- May 20, 2022
- Record last updated
- Aug 29, 2023
- Fax
- (217) 545-4485
- Medicare enrollment
- Enrolled (PECOS I20231106002492); accepts Medicare assignment
- Medical or professional school
- Southern Illinois University School Of Medicine, 2023
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 751 N Rutledge St Ste 2100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Zainab AlnafoosiInfectious Disease Physician1124401070
- Muath Alsharif, MDPulmonary Disease Physician1316477508
- Saif FaiekPulmonary Disease Physician1770013963
- Joseph Henkle, M.D.Pulmonary Disease Physician1629066477
- Madeleine Hoffman, NP-CNurse Practitioner1427683903
Verify Maryann Oyinkeprebi Van Ryn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209.028117Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average family nurse practitioner in 2024
147 Medicare Part D claims for 45 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Amoxicillin-Clavulanate Potass21 claims
- Sulfamethoxazole-Trimethoprim15 claims
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 one group practice
- Siu Physicians And Surgeons IncSpringfield, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maryann Oyinkeprebi Van Ryn among 7,639 family nurse practitioner records in Illinois
Maryann Oyinkeprebi Van Ryn is one of 7,639 family nurse practitioner records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 72% of them.
- NPI issued2022 · 72% of these records are older, 22% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2023 · median 2018 among the 4,778 with a school on file
- Record last updated2023 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
309 family nurse practitioner records list a practice address in Springfield
They are 309 of the 4,997 NPPES records with a practice address in Springfield, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Springfield → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Theresa Boley, CFNPSpringfield, IL 627021184605743
- Lorrie Cuartas, WHNP, FNP-BCSpringfield, IL 627021649271073
- Mary Ditman, C.F.N.P.Springfield, IL 627021114920139
- Airn Etherton, FNP-BCSpringfield, IL 627021114115920
- Pamela Kelley, C.N.P.Springfield, IL 627021588852107
- Denise Mears, FNP-BC, PNP-BCSpringfield, IL 627021326136870
- Christopher Mogren, CFNPSpringfield, IL 627021417147927
- Linda Read, FNP-BCSpringfield, IL 627021326242629
Common questions
What is Maryann Oyinkeprebi Van Ryn's NPI number?
Maryann Oyinkeprebi Van Ryn's National Provider Identifier (NPI) is 1295473296, issued on May 20, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Maryann Oyinkeprebi Van Ryn located?
The NPPES record lists a practice address at 751 N Rutledge St Ste 2100, Springfield, IL, 62702. Phone: (217) 545-8000. Providers update this record themselves, so call before visiting.
How can I verify Maryann Oyinkeprebi Van Ryn's license?
NPPES lists Illinois license number 209.028117, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Maryann Oyinkeprebi Van Ryn prescribe under Medicare Part D?
In 2024, Maryann Oyinkeprebi Van Ryn had 147 Medicare Part D claims for 45 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.