Karen Loomans, MD
NPI 1649246596 · Internal Medicine Physician · Waunakee, WI
Karen Loomans, MD is a Internal Medicine Physician provider in Waunakee, WI (NPI 1649246596).
Provider details
- NPI number
- 1649246596
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 31274 (WI)
Specialties & taxonomies
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
613 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 227 | $15 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 176 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 66 | $119 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 51 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 39 | $8 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 23 | 22 |
| Doxycycline Hyclate | 21 | 21 |
| Amlodipine Besylate | 18 | 12 |
| Naproxen | 15 | 14 |
| Azithromycin | 13 | 13 |
| Cephalexin | 13 | 13 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-28
- Last updated
- 2025-10-03
- Certified
- 2025-10-03
Frequently asked questions
- What is Karen Loomans's NPI number?
- Karen Loomans's National Provider Identifier (NPI) is 1649246596, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Loomans's specialty?
- Karen Loomans is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Loomans located?
- Karen Loomans's practice location on file with NPPES is 1603 Charleston Cir, Waunakee, WI 53597-2332.
- What is Karen Loomans's phone number?
- The practice phone number listed in the NPPES registry for Karen Loomans is (608) 265-7550.
- Is Karen Loomans's NPI active?
- Yes — Karen Loomans's NPI (1649246596) is active in the NPPES registry as of the last update on 2025-10-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.