Kathleen Ritzert, CNP
Nurse Practitioner · Ann Arbor, MI
Kathleen Ritzert, CNP is a nurse practitioner with a practice address in Ann Arbor, Michigan, and NPI 1225583362, issued on Aug 18, 2016. Check the license (Michigan 4704251887, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathleen Ritzert
- Credential
- CNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 4704251887 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2215 Fuller RD, Ann Arbor, MI 48105
- Phone
- (734) 769-1624
- Enumerated
- Aug 18, 2016
- Record last updated
- Mar 20, 2026
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,574 in Michigan → Look up another NPI →
Also registered at 2215 Fuller RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristina Abbott, BSN RNRegistered Nurse1669180501
- Abrahime AbdallahRegistered Nurse1760151690
- Hannah AbrahamStudent in an Organized Health Care Education/Training Program1710678578
- Karli AbrahamOccupational Therapy Assistant1437859824
- Kristen Abraham, PH.D.Clinical Psychologist1356775035
- Christine-Grace Adams, RNAmbulatory Care Registered Nurse1336866961
Verify Kathleen Ritzert in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4704251887Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average nurse practitioner in 2024
1,127 Medicare Part D claims for 370 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Eliquis228 claims
- Metoprolol Succinate128 claims
- Atorvastatin Calcium95 claims
- Clopidogrel81 claims
- Furosemide52 claims
- Lisinopril47 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.
Industry payments in 2024: $253.45
4 payments; by number, the most common kind was food and beverage; the largest payer was Impulse Dynamics (USA) Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Kathleen Ritzert among 3,574 nurse practitioner records in Michigan
Kathleen Ritzert, CNP is one of 3,574 nurse practitioner records with a practice address in Michigan. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 47% of them.
- NPI issued2016 · 47% of these records are older, 48% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2026 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
704 nurse practitioner records list a practice address in Ann Arbor
They are 704 of the 15,616 NPPES records with a practice address in Ann Arbor, and 3,574 nurse practitioner records in Michigan.
All 3,574 in Michigan → Every provider in Ann Arbor → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Terri Arthur, AHP, NPAnn Arbor, MI 481051538475546
- Karen Burek, NPAnn Arbor, MI 481051134346216
- Kimberlee Buzenberg, NPAnn Arbor, MI 481051982712196
- Jennifer Dubnicki, NPAnn Arbor, MI 481051437214921
- Bryan Facione, ACNPAnn Arbor, MI 481051538477005
- Douglas Fowler, FNPAnn Arbor, MI 481051346268976
- Michele Gargan, NPAnn Arbor, MI 481051568567154
- Susan Hughes, NPAnn Arbor, MI 481051801016514
Common questions
What is Kathleen Ritzert, CNP's NPI number?
Kathleen Ritzert, CNP's National Provider Identifier (NPI) is 1225583362, issued on Aug 18, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Ritzert, CNP located?
The NPPES record lists a practice address at 2215 Fuller RD, Ann Arbor, MI, 48105. Phone: (734) 769-1624. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Ritzert, CNP's license?
NPPES lists Michigan license number 4704251887, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Kathleen Ritzert, CNP prescribe under Medicare Part D?
In 2024, Kathleen Ritzert, CNP had 1,127 Medicare Part D claims for 370 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.