Robert Parker Guinsler, DO
NPI 1720541253ActiveIndividual· Internal Medicine· Newark, OH
Internal Medicine (DO) in Newark, Ohio, trained at Ohio University, College of Osteopathic Medicine (class of 2019). Their prescriptions cost Medicare Part D more than their services did: $599,666 for 7,302 claims, against $133,726 paid for services in 2024. Asahi Intecc USA, Inc. was the largest of 2 companies reporting payments in 2025, $253.79 in all, mostly food and beverage.
Overview
| NPI | 1720541253 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Apr 11, 2019 |
| Last updated in NPPES | Jan 13, 2025 |
| Certified by provider | Jan 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 34.014854 | 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 - Internal Medicine (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 401 |
|---|---|
| Services billed | 1,867 across 27 procedure codes |
| Paid by Medicare | $133,726 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,302 · 9,142 30-day fills |
|---|---|
| Patients | 679 |
| Total drug cost | $599,666 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Ohio University, College of Osteopathic Medicine |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Internal Medicine |
Medical group
- Licking Memorial Professional CorporationNewark, OH · 234 clinicians
Hospital affiliations
- Adena Fayette Medical CenterWashington Ch, OH
- Licking Memorial HospitalNewark, OH
Other facilities
- Centerwell Home Health IIHome health agency · Mount Vernon, OH
- Premier Home Health LLCHome health agency · Newark, OH
- Heartland HospiceHospice · Lucasville, OH
- Heartland HospiceHospice · Columbus, OH
- Suncrest HospiceHospice · Columbus, OH
Industry payments (Open Payments)
- 2025$253.79 · 2 payments from 2 companies
- 2024$266.37 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Asahi Intecc USA, Inc. | $134.74 | 1 |
| Axsome Therapeutics, Inc. | $119.05 | 1 |
What the 2025 payments were for
- Food and Beverage$253.79 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Newark
- 1558384677
- 1730109166
- 1861412207
- 1437407269
- 1821276163
- 1740239110
- 1740289941
- 1346201407
- 1174782775
- 1144521618
- 1730193137
- 1093256216