William Detlev Rittmeyer, DO
NPI 1770088189ActiveIndividual· Pain Medicine, Interventional Pain Medicine· Libertyville, IL
Pain Medicine, Interventional Pain Medicine (DO) with Advocate Health and Hospitals Corporation, practicing in Libertyville, Illinois. 498 Medicare patients in 2024, $228,505 paid; nearly all of their 4,329 Part D prescriptions were generic (95%). Abbott Laboratories was the largest of 8 companies reporting payments in 2025, $3,417 in all, mostly travel and lodging. Lists Advocate Condell Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1770088189 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Mar 27, 2018 |
| Last updated in NPPES | May 22, 2025 |
| Certified by provider | May 22, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pain Medicine, Interventional Pain Medicine Primary | 208VP0014X | 036.158666 | IL |
| Anesthesiology | 207L00000X | 036.158666 | IL |
| Anesthesiology, Pain Medicine | 207LP2900X | 036.158666 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Anesthesiology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 498 |
|---|---|
| Services billed | 11,739 across 81 procedure codes |
| Paid by Medicare | $228,505 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,329 · 5,091 30-day fills |
|---|---|
| Patients | 628 |
| Total drug cost | $287,710 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Anesthesiology |
| Telehealth | Offers telehealth |
Medical group
- Advocate Health and Hospitals CorporationChicago, IL · 3,118 clinicians
Hospital affiliations
- Advocate Condell Medical CenterLibertyville, IL
- Advocate Good Shepherd HospitalBarrington, IL
- Advocate Illinois Masonic Medical CenterChicago, IL
Industry payments (Open Payments)
- 2025$3,417 · 54 payments from 8 companies
- 2024$3,392 · 49 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $2,563 | 26 |
| Stratus Medical, LLC | $332.91 | 6 |
| Globus Medical, Inc. | $245.39 | 5 |
| Boston Scientific Corporation | $159.75 | 2 |
| Stryker Corporation | $57.87 | 1 |
What the 2025 payments were for
- Travel and Lodging$1,879 · 8 payments
- Food and Beverage$1,468 · 45 payments
- Education$70.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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