Douglas A. Ambler, MD
NPI 1154343689ActiveIndividual· Internal Medicine· Wheaton, IL
Internal Medicine (MD) in Wheaton, Illinois, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $780,450 for 9,415 claims, against $236,438 paid for services in 2024.
Overview
| NPI | 1154343689 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 24, 2006 |
| Last updated in NPPES | Nov 5, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036097066 | IL |
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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 650 |
|---|---|
| Services billed | 2,783 across 49 procedure codes |
| Paid by Medicare | $236,438 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,415 · 16,842 30-day fills |
|---|---|
| Patients | 732 |
| Total drug cost | $780,450 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Select Rehabilitation, LLCGlenview, IL · 2,046 clinicians
- Central Dupage Physician GroupGeneva, IL · 1,080 clinicians
Hospital affiliations
- Edward HospitalNaperville, IL
- Loyola University Medical CenterMaywood, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine Delnor Community HospitalGeneva, IL
- Northwestern Memorial HospitalChicago, IL
Other facilities
- Covenantcare at HomeHome health agency · Saint Charles, IL
- Family Home Health Services, IncHome health agency · Addison, IL
- Palos Community Hospital Home Health CareHome health agency · Lemont, IL
- Resilience Home Health, LLCHome health agency · Aurora, IL
- Lighthouse Hospice Care LLCHospice · Naperville, IL
- Marianjoy Rehabilitation CenterInpatient rehabilitation facility · Wheaton, IL
- Wynscape Health & RehabNursing home · Wheaton, IL
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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