Michael G. Layfield, PA-C
NPI 1124157250ActiveIndividual· Physician Assistant, Medical· Aurora, CO
Physician Assistant, Medical (PA-C) with Rocky Mountain Gastroenterology Associates, PLLC, practicing in Aurora, Colorado. Their prescriptions cost Medicare Part D more than their services did: $1,513,740 for 705 claims, against $22,765 paid for services in 2024. Abbvie Inc. was the largest of 18 companies reporting payments in 2025, $1,498 in all, mostly food and beverage. Lists The Medical Center of Aurora & South Hospital as a hospital affiliation.
Overview
| NPI | 1124157250 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Mar 5, 2007 |
| Last updated in NPPES | Jun 5, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 1844 | CO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 201 |
|---|---|
| Services billed | 305 across 8 procedure codes |
| Paid by Medicare | $22,765 |
Part D prescriptions in 2024
| Prescriptions (claims) | 705 · 1,228 30-day fills |
|---|---|
| Patients | 177 |
| Total drug cost | $1,513,740 |
| Generic share | 72% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Rocky Mountain Gastroenterology Associates, PLLCThornton, CO · 36 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$1,498 · 67 payments from 18 companies
- 2024$1,964 · 85 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $288.15 | 13 |
| Takeda Pharmaceuticals U.S.A., Inc. | $243.86 | 9 |
| Janssen Biotech, Inc. | $230.32 | 16 |
| Madrigal Pharmaceuticals | $159.85 | 5 |
| Ipsen Biopharmaceuticals, Inc | $98.71 | 5 |
What the 2025 payments were for
- Food and Beverage$1,498 · 67 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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