Ryan B. Marendiuk, DNP
Psychiatric/Mental Health Nurse Practitioner · Fond Du Lac, WI
Ryan B. Marendiuk, DNP is a psychiatric/mental health nurse practitioner with a practice address in Fond Du Lac, Wisconsin, and NPI 1093965816, issued on Sep 29, 2008. Check the license (Wisconsin 13689-33, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ryan B. Marendiuk
- Credential
- DNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License numbers
- 13689-33 WI
48298 HI
27171 ID
Self-reported in NPPES; status is on the state search - Practice location
- 430 E Division St, Fond Du Lac, WI 54935
- Phone
- (920) 926-4200
- Enumerated
- Sep 29, 2008
- Record last updated
- May 22, 2023
- Fax
- (920) 926-8933
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 710 in Wisconsin → Look up another NPI →
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Verify Ryan B. Marendiuk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 13689-33Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
197 Medicare Part D claims for 37 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydroxyzine Pamoate29 claims
- Olanzapine23 claims
- Clonidine Hcl22 claims
- Haloperidol13 claims
- Risperidone12 claims
- Sertraline Hcl12 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.
Ryan B. Marendiuk among 710 psychiatric/mental health nurse practitioner records in Wisconsin
Ryan B. Marendiuk, DNP is one of 710 psychiatric/mental health nurse practitioner records with a practice address in Wisconsin. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 9% of them.
- NPI issued2008 · 9% of these records are older, 88% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2023 · 20% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatric/Mental Health Nurse Practitioner providers in Wisconsin
There are 710 psychiatric/mental health nurse practitioner records in Wisconsin.
All 710 in Wisconsin → Every provider in Fond Du Lac → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Joline Brotzman, MS, RN, PMHCNS-BCFond Du Lac, WI 549351578813606
- Alexandra Collard, PMHNP-BCFond Du Lac, WI 549351154033272
- Jessica Garcia, DNP-PMHNPFond Du Lac, WI 549351386344612
- Alexandria Hefter, APNPFond Du Lac, WI 549351326674136
- Michelle Kehrmeyer, N.P.Fond Du Lac, WI 549351033636188
- April Riggs, PMHNP-BCFond Du Lac, WI 549351659721132
- Gideon Stein, PMHNPFond Du Lac, WI 549351770281461
- Kurt ThomasFond Du Lac, WI 549351396399606
Common questions
What is Ryan B. Marendiuk, DNP's NPI number?
Ryan B. Marendiuk, DNP's National Provider Identifier (NPI) is 1093965816, issued on Sep 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ryan B. Marendiuk, DNP located?
The NPPES record lists a practice address at 430 E Division St, Fond Du Lac, WI, 54935. Phone: (920) 926-4200. Providers update this record themselves, so call before visiting.
How can I verify Ryan B. Marendiuk, DNP's license?
NPPES lists Wisconsin license number 13689-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Ryan B. Marendiuk, DNP prescribe under Medicare Part D?
In 2024, Ryan B. Marendiuk, DNP had 197 Medicare Part D claims for 37 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.