Stefen M. Ammon, MD
NPI 1730210733ActiveIndividual· Emergency Medicine· Littleton, CO
Emergency Medicine (MD) with Usacs Community Emergency Services of Colorado Inc., practicing in Littleton, Colorado. Mostly services rather than prescriptions: Medicare paid $34,500 for 457 patients in 2024, with only 40 Part D claims. Lists Adventhealth Castle Rock and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1730210733 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 8, 2007 |
| Last updated in NPPES | May 15, 2020 |
| Certified by provider | May 15, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | MC-0362 | ID |
| Emergency Medicine | 207P00000X | CDRH.0045573 | CO |
| Emergency Medicine | 207P00000X | 58357 | AZ |
| Emergency Medicine | 207P00000X | 18674 | NV |
| Emergency Medicine | 207P00000X | 45573 | 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 - Emergency Medicine (AZ); Practitioner - Emergency Medicine (CA); Practitioner - Emergency Medicine (CO); Practitioner - Emergency Medicine (DC); Practitioner - Emergency Medicine (FL); Practitioner - Emergency Medicine (MA); Practitioner - Emergency Medicine (NJ); Practitioner - Emergency Medicine (NV); Practitioner - Emergency Medicine (OK); Practitioner - Emergency Medicine (OR); Practitioner - Emergency Medicine (TX); Practitioner - Emergency Medicine (VA); Practitioner - Emergency Medicine (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 457 |
|---|---|
| Services billed | 981 across 58 procedure codes |
| Paid by Medicare | $34,500 |
Part D prescriptions in 2024
| Prescriptions (claims) | 40 · 42 30-day fills |
|---|---|
| Patients | 26 |
| Total drug cost | $524.42 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Emergency Medicine |
Medical group
- Usacs Community Emergency Services of Colorado Inc.Arvada, CO · 175 clinicians
Hospital affiliations
- Adventhealth Castle RockCastle Rock, CO
- Adventhealth LittletonLittleton, CO
- Adventhealth ParkerParker, CO
- Adventhealth PorterDenver, CO
- Denver Health & Hospital AuthorityDenver, CO
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 57 emergency medicine physicians in Littleton · All emergency medicine physicians in Colorado