Guy W. Tillinghast, M.D.
NPI 1205853793ActiveIndividual· Internal Medicine, Medical Oncology· Akron, OH
Internal Medicine, Medical Oncology (M.D.) with Cleveland Clinic and 1 other group, practicing in Akron, Ohio. Their prescriptions cost Medicare Part D more than their services did: $627,010 for 244 claims, against $12,953 paid for services in 2024. Caris Mpi, Inc. was the largest of 4 companies reporting payments in 2025, $77.69 in all, mostly food and beverage. Lists Akron General Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1205853793 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 17, 2006 |
| Last updated in NPPES | May 23, 2025 |
| Certified by provider | May 23, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 35.138572 | OH |
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 - Hematology/Oncology (OH); Practitioner - Medical Oncology (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 157 |
|---|---|
| Services billed | 208 across 11 procedure codes |
| Paid by Medicare | $12,953 |
Part D prescriptions in 2024
| Prescriptions (claims) | 244 · 362 30-day fills |
|---|---|
| Patients | 88 |
| Total drug cost | $627,010 |
| Generic share | 61% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology/Oncology, Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Cleveland ClinicCleveland, OH · 7,090 clinicians
- University Health System, Inc.Knoxville, TN · 522 clinicians
Hospital affiliations
- Akron General Medical CenterAkron, OH
- Cabell Huntington Hospital, IncHuntington, WV
- Cleveland ClinicCleveland, OH
- Mercy Medical CenterCanton, OH
- University Health System, IncKnoxville, TN
Industry payments (Open Payments)
- 2025$77.69 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Caris Mpi, Inc. | $26.55 | 1 |
| Regeneron Healthcare Solutions, Inc. | $19.86 | 1 |
| Beone Medicines USA, Inc. | $16.35 | 1 |
| Merck Sharp & Dohme LLC | $14.93 | 1 |
What the 2025 payments were for
- Food and Beverage$77.69 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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