Karl Baum, MD
NPI 1497749402 · Hospitalist Physician · Oshkosh, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Baum, MD is a Hospitalist Physician provider in Oshkosh, WI (NPI 1497749402).
Provider details
- NPI number
- 1497749402
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35816 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
20 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
233 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 122 | $72 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 41 | $105 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 29 | $45 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 25 | $109 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 16 | $160 |
Typical Medicare-allowed amounts for these services range $45–$160 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 27 | 14 |
| Atorvastatin Calcium | 21 | — |
| Potassium Chloride | 18 | — |
| Prednisone | 16 | 16 |
| Metoprolol Tartrate | 13 | — |
| Fosinopril Sodium | 13 | — |
| Amlodipine Besylate | 12 | 12 |
Practice location
Mailing address
Additional practice locations (1)
- 1506 S Oneida StAppleton, WI 54915-1305Phone: (920) 738-2000
Registry dates
- Enumerated
- 2005-09-06
- Last updated
- 2024-10-18
- Certified
- 2024-10-18
Frequently asked questions
- What is Karl Baum's NPI number?
- Karl Baum's National Provider Identifier (NPI) is 1497749402, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Baum's specialty?
- Karl Baum is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Baum located?
- Karl Baum's practice location on file with NPPES is 855 N Westhaven Dr, Oshkosh, WI 54904-7668.
- What is Karl Baum's phone number?
- The practice phone number listed in the NPPES registry for Karl Baum is (920) 303-8700.
- Does Karl Baum accept Medicare?
- Karl Baum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Baum's NPI active?
- Yes — Karl Baum's NPI (1497749402) is active in the NPPES registry as of the last update on 2024-10-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.