Kathleen Ritzert, CNP
NPI 1225583362 · Nurse Practitioner · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathleen Ritzert, CNP is a Nurse Practitioner provider in Ann Arbor, MI (NPI 1225583362).
Provider details
- NPI number
- 1225583362
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CNP
- Sex
- Female
- Sole proprietor
- No
- License
- 4704251887 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
346 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 104 | $78 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 65 | $117 |
| External Shock to Heart to Regulate Heart Beat92960 | 43 | $91 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 43 | $7 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 37 | $123 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 228 | 78 |
| Metoprolol Succinate | 128 | 62 |
| Atorvastatin Calcium | 95 | 40 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 81 | 40 |
| Furosemide | 52 | 29 |
| Metoprolol Tartrate | 47 | 22 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$253 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-08-18
- Last updated
- 2026-03-20
- Certified
- 2026-03-20
Frequently asked questions
- What is Kathleen Ritzert's NPI number?
- Kathleen Ritzert's National Provider Identifier (NPI) is 1225583362, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathleen Ritzert's specialty?
- Kathleen Ritzert is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kathleen Ritzert located?
- Kathleen Ritzert's practice location on file with NPPES is 2215 Fuller Rd, Ann Arbor, MI 48105-2303.
- What is Kathleen Ritzert's phone number?
- The practice phone number listed in the NPPES registry for Kathleen Ritzert is (734) 769-1624.
- Does Kathleen Ritzert accept Medicare?
- Kathleen Ritzert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathleen Ritzert's NPI active?
- Yes — Kathleen Ritzert's NPI (1225583362) is active in the NPPES registry as of the last update on 2026-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.