Ruth Staszak, APNP
NPI 1518340090 · Nurse Practitioner · Oshkosh, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruth Staszak, APNP is a Nurse Practitioner provider in Oshkosh, WI (NPI 1518340090).
Provider details
- NPI number
- 1518340090
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APNP
- Sex
- Female
- Sole proprietor
- No
- License
- 2014034632 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
300 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 96 | $101 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 71 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 59 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 42 | $71 |
| Red Blood Cell Sedimentation Rate, to Detect Inflammation, Automated85652 | 32 | $3 |
Typical Medicare-allowed amounts for these services range $3–$101 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 393 | 106 |
| Hydroxychloroquine Sulfate | 330 | 119 |
| Methotrexate Sodiumbrand: Methotrexate | 239 | 82 |
| Pregabalin | 138 | 37 |
| Gabapentin | 107 | 31 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 99 | 49 |
Practice location
Mailing address
Additional practice locations (1)
- 1855 S Koeller StOshkosh, WI 54902-6186Phone: (920) 223-7010
Registry dates
- Enumerated
- 2015-07-02
- Last updated
- 2024-12-08
- Certified
- 2024-12-08
Frequently asked questions
- What is Ruth Staszak's NPI number?
- Ruth Staszak's National Provider Identifier (NPI) is 1518340090, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Staszak's specialty?
- Ruth Staszak is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Ruth Staszak located?
- Ruth Staszak's practice location on file with NPPES is 855 N Westhaven Dr, Oshkosh, WI 54904-7668.
- What is Ruth Staszak's phone number?
- The practice phone number listed in the NPPES registry for Ruth Staszak is (920) 303-8700.
- Does Ruth Staszak accept Medicare?
- Ruth Staszak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruth Staszak's NPI active?
- Yes — Ruth Staszak's NPI (1518340090) is active in the NPPES registry as of the last update on 2024-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.