Katrina Hammel, M.D.
NPI 1780894527 · Internal Medicine Physician · Winona, MN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katrina Hammel, M.D. is a Internal Medicine Physician provider in Winona, MN (NPI 1780894527).
Provider details
- NPI number
- 1780894527
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 37932 (IA)
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
19 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
1,442 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 | 360 | $92 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 231 | $8 |
| 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 | 222 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 160 | $62 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 148 | $102 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 220 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 858 | 196 |
| Omeprazole | 617 | 136 |
| Metoprolol Succinate | 613 | 135 |
| Levothyroxine Sodium | 595 | 121 |
| Amlodipine Besylate | 554 | 131 |
| Losartan Potassium | 516 | 122 |
| Furosemide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-23
- Last updated
- 2013-02-06
Frequently asked questions
- What is Katrina Hammel's NPI number?
- Katrina Hammel's National Provider Identifier (NPI) is 1780894527, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katrina Hammel's specialty?
- Katrina Hammel is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Katrina Hammel located?
- Katrina Hammel's practice location on file with NPPES is 855 Mankato Ave, Winona, MN 55987-4868.
- What is Katrina Hammel's phone number?
- The practice phone number listed in the NPPES registry for Katrina Hammel is (507) 454-3650.
- Does Katrina Hammel accept Medicare?
- Katrina Hammel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katrina Hammel's NPI active?
- Yes — Katrina Hammel's NPI (1780894527) is active in the NPPES registry as of the last update on 2013-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.