Amy Lum Tobin, DO
NPI 1093743007ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Sterling Heights, MI
Internal Medicine, Endocrinology, Diabetes & Metabolism (DO) in Sterling Heights, Michigan, trained at Michigan State University College of Human Medicine (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $1,460,642 for 2,085 claims, against $47,152 paid for services in 2024. Cequr Corporation was the largest of 28 companies reporting payments in 2025, $5,456 in all, mostly food and beverage.
Overview
| NPI | 1093743007 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jun 29, 2006 |
| Last updated in NPPES | Nov 20, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 5101010948 | MI |
| Nuclear Medicine, Nuclear Imaging & Therapy | 207UN0902X | 5101010948 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 145 |
|---|---|
| Services billed | 1,018 across 15 procedure codes |
| Paid by Medicare | $47,152 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,085 · 5,292 30-day fills |
|---|---|
| Patients | 251 |
| Total drug cost | $1,460,642 |
| Generic share | 28% of claims |
Education and affiliations
| Medical school | Michigan State University College of Human Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Grunberger Diabetes Medical Center PCBloomfield Hills, MI · 3 clinicians
Hospital affiliations
- Beaumont Hospital Royal OakRoyal Oak, MI
- Beaumont Hospital, TroyTroy, MI
- McLaren OaklandPontiac, MI
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Trinity Health Oakland HospitalPontiac, MI
Industry payments (Open Payments)
- 2025$5,456 · 178 payments from 28 companies
- 2024$6,112 · 170 payments from 31 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Cequr Corporation | $786.57 | 18 |
| Amgen Inc. | $770.17 | 22 |
| Medtronic, Inc. | $509.78 | 10 |
| Novo Nordisk Inc | $482.25 | 19 |
| Mannkind Corporation | $406.85 | 18 |
What the 2025 payments were for
- Food and Beverage$5,384 · 176 payments
- Education$71.83 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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