Ammon Larsen, M.D.
NPI 1982044012ActiveIndividual· Dermatology· Loveland, CO
Dermatology (M.D.) in Loveland, Colorado, trained at Pennsylvania State University College of Medicine (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $2,133,442 for 1,244 claims, against $226,238 paid for services in 2024. Galderma Laboratories, L.P. was the largest of 18 companies reporting payments in 2025, $299,259 in all, mostly speaking and faculty fees.
Overview
| NPI | 1982044012 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 3, 2013 |
| Last updated in NPPES | Sep 3, 2026 |
| Certified by provider | Sep 3, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 0058495 | CO |
| Dermatology, Procedural Dermatology | 207NS0135X | 0058495 | CO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Dermatology (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 865 |
|---|---|
| Services billed | 4,844 across 54 procedure codes |
| Paid by Medicare | $226,238 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,244 · 1,415 30-day fills |
|---|---|
| Patients | 440 |
| Total drug cost | $2,133,442 |
| Generic share | 75% of claims |
Education and affiliations
| Medical school | Pennsylvania State University College of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Dermatology |
Medical group
- Monarch Dermatology and Surgery LLCSterling, CO · 6 clinicians
Hospital affiliations
- Medical Center of the RockiesLoveland, CO
- Sterling Regional MedcenterSterling, CO
Industry payments (Open Payments)
- 2025$299,259 · 458 payments from 18 companies
- 2024$155,972 · 341 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Galderma Laboratories, L.P. | $72,509 | 68 |
| Lilly USA, LLC | $60,493 | 105 |
| Ucb, Inc. | $55,789 | 96 |
| Abbvie Inc. | $45,455 | 41 |
| Genzyme Corporation | $23,132 | 25 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$234,016 · 80 payments
- Consulting Fee$29,655 · 10 payments
- Travel and Lodging$14,798 · 136 payments
- Honoraria$13,200 · 3 payments
- Food and Beverage$7,500 · 227 payments
- Education$90.00 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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