Lars Swanson, MD
NPI 1457346686 · Internal Medicine Physician · Oshkosh, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lars Swanson, MD is a Internal Medicine Physician provider in Oshkosh, WI (NPI 1457346686).
Provider details
- NPI number
- 1457346686
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 44250 (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
1,095 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 | 389 | $116 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 270 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 179 | $114 |
| Advance Care Planning, First 30 Minutes99497 | 175 | $73 |
| Administration of Influenza Virus VaccineG0008 | 28 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 24 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 183 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,046 | 249 |
| Losartan Potassium | 961 | 244 |
| Amlodipine Besylate | 772 | 194 |
| Rosuvastatin Calcium | 622 | 163 |
| Omeprazole | 594 | 160 |
| Levothyroxine Sodium | 516 | 111 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-14
- Last updated
- 2025-03-19
- Certified
- 2025-03-19
Frequently asked questions
- What is Lars Swanson's NPI number?
- Lars Swanson's National Provider Identifier (NPI) is 1457346686, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lars Swanson's specialty?
- Lars Swanson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lars Swanson located?
- Lars Swanson's practice location on file with NPPES is 2700 W 9th Ave Ste 203, Oshkosh, WI 54904-7864.
- What is Lars Swanson's phone number?
- The practice phone number listed in the NPPES registry for Lars Swanson is (920) 738-2000.
- Does Lars Swanson accept Medicare?
- Lars Swanson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lars Swanson's NPI active?
- Yes — Lars Swanson's NPI (1457346686) is active in the NPPES registry as of the last update on 2025-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.