Karen Swallen, MD
NPI 1023242831 · Hospitalist Physician · Baraboo, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Swallen, MD is a Hospitalist Physician provider in Baraboo, WI (NPI 1023242831).
Provider details
- NPI number
- 1023242831
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 55354 (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
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
275 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 | 60 | $73 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 60 | $110 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 44 | $105 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 40 | $160 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 29 | $120 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 26 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 61 | 38 |
| Omeprazole | 32 | 14 |
| Levothyroxine Sodium | 31 | 17 |
| Lisinopril | 31 | 20 |
| Amlodipine Besylate | 30 | 14 |
| Simvastatin | 30 | 18 |
| Hydrochlorothiazide | 29 | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-05-07
- Last updated
- 2025-03-08
- Certified
- 2025-03-08
Frequently asked questions
- What is Karen Swallen's NPI number?
- Karen Swallen's National Provider Identifier (NPI) is 1023242831, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Swallen's specialty?
- Karen Swallen is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Swallen located?
- Karen Swallen's practice location on file with NPPES is 707 14th St, Baraboo, WI 53913-1539.
- What is Karen Swallen's phone number?
- The practice phone number listed in the NPPES registry for Karen Swallen is (608) 356-1400.
- Does Karen Swallen accept Medicare?
- Karen Swallen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Swallen's NPI active?
- Yes — Karen Swallen's NPI (1023242831) is active in the NPPES registry as of the last update on 2025-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.