Ari Philip Walter, MD
NPI 1922669431ActiveIndividual· Family Medicine, Sleep Medicine· Boulder, CO
Family Medicine, Sleep Medicine (MD) with Elan Sleep LLC, practicing in Boulder, Colorado. 68 Medicare patients in 2024, $6,554 paid; nearly all of their 82 Part D prescriptions were generic (95%). Harmony Biosciences LLC reported $99.99 in payments in 2025, mostly education.
Overview
| NPI | 1922669431 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 25, 2019 |
| Last updated in NPPES | Jan 23, 2024 |
| Certified by provider | Jan 23, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine, Sleep Medicine Primary | 207QS1201X | 4301506226 | MI |
| Family Medicine | 207Q00000X | 4301506226 | MI |
| Family Medicine | 207Q00000X | 4351045646 | MI |
| Student in an Organized Health Care Education/Training Program | 390200000X | 4351045646 | MI |
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 - Sleep Medicine (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 68 |
|---|---|
| Services billed | 82 across 11 procedure codes |
| Paid by Medicare | $6,554 |
Part D prescriptions in 2024
| Prescriptions (claims) | 82 · 129 30-day fills |
|---|---|
| Patients | 20 |
| Total drug cost | $3,691 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Sleep Medicine |
| Telehealth | Offers telehealth |
Medical group
- Elan Sleep LLCLongmont, CO · 14 clinicians
Industry payments (Open Payments)
- 2025$99.99 · 1 payment from 1 company
- 2024$111.86 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Harmony Biosciences LLC | $99.99 | 1 |
What the 2025 payments were for
- Education$99.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Family Medicine, Sleep Medicine providers in Boulder
- 1205456480
- 1023102498