Robert S. Zimmerman, MD
NPI 1689764706ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Cleveland, OH
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Cleveland, Ohio, trained at Johns Hopkins University School of Medicine (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $1,480,237 for 3,649 claims, against $30,332 paid for services in 2024. Xeris Pharmaceuticals, Inc. was the largest of 5 companies reporting payments in 2025, $5,949 in all, mostly honoraria.
Overview
| NPI | 1689764706 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 13, 2006 |
| Last updated in NPPES | Feb 4, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 35078799Z | 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 - Endocrinology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 220 |
|---|---|
| Services billed | 459 across 16 procedure codes |
| Paid by Medicare | $30,332 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,649 · 7,912 30-day fills |
|---|---|
| Patients | 413 |
| Total drug cost | $1,480,237 |
| Generic share | 44% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Cleveland ClinicCleveland, OH · 7,090 clinicians
Hospital affiliations
- Akron General Medical CenterAkron, OH
- Cleveland ClinicCleveland, OH
- Cleveland Clinic Avon HospitalAvon, OH
- Hillcrest HospitalMayfield Heights, OH
- Mercy Medical CenterCanton, OH
Industry payments (Open Payments)
- 2025$5,949 · 21 payments from 5 companies
- 2024$13,229 · 41 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Xeris Pharmaceuticals, Inc. | $5,669 | 9 |
| Abbott Laboratories | $148.22 | 8 |
| Novo Nordisk Inc | $64.54 | 2 |
| Lilly USA, LLC | $34.63 | 1 |
| Recordati_rare_diseases_inc. | $32.13 | 1 |
What the 2025 payments were for
- Honoraria$5,334 · 3 payments
- Food and Beverage$500.15 · 14 payments
- Education$64.54 · 2 payments
- Travel and Lodging$50.00 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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