Ganna Oosting, M.D.
NPI 1861500886 · Hospitalist Physician · Two Rivers, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ganna Oosting, M.D. is a Hospitalist Physician provider in Two Rivers, WI (NPI 1861500886).
Provider details
- NPI number
- 1861500886
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 45000 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
113 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 49 | $160 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 33 | $120 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 31 | $8 |
Typical Medicare-allowed amounts for these services range $8–$160 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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.
Practice location
Mailing address
Additional practice locations (1)
- 2414 Kohler Memorial DrAurora Sheboygan Clinic/Hospitalist GroupSheboygan, WI 53081-3129Phone: (920) 459-1803
Registry dates
- Enumerated
- 2006-08-29
- Last updated
- 2024-03-27
- Certified
- 2024-03-27
Frequently asked questions
- What is Ganna Oosting's NPI number?
- Ganna Oosting's National Provider Identifier (NPI) is 1861500886, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ganna Oosting's specialty?
- Ganna Oosting is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Ganna Oosting located?
- Ganna Oosting's practice location on file with NPPES is 5000 Memorial Dr, Two Rivers, WI 54241-3900.
- What is Ganna Oosting's phone number?
- The practice phone number listed in the NPPES registry for Ganna Oosting is (920) 794-5000.
- Does Ganna Oosting accept Medicare?
- Ganna Oosting is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ganna Oosting's NPI active?
- Yes — Ganna Oosting's NPI (1861500886) is active in the NPPES registry as of the last update on 2024-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.