Craig Phillip Greenberg, M.D.
NPI 1326154329ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Kalamazoo, MI
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Kalamazoo, Michigan, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $1,615,475 for 6,943 claims, against $25,637 paid for services in 2024. Amgen Inc. was the largest of 13 companies reporting payments in 2025, $785.17 in all, mostly food and beverage.
Overview
| NPI | 1326154329 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 22, 2006 |
| Last updated in NPPES | Aug 19, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 4301102468 | MI |
| Internal Medicine, Endocrinology, Diabetes & Metabolism | 207RE0101X | MD15850 | OR |
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 | 228 |
|---|---|
| Services billed | 378 across 7 procedure codes |
| Paid by Medicare | $25,637 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,943 · 15,738 30-day fills |
|---|---|
| Patients | 655 |
| Total drug cost | $1,615,475 |
| Generic share | 61% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Ascension Medical Group PromedKalamazoo, MI · 262 clinicians
Hospital affiliations
- Borgess Medical CenterKalamazoo, MI
- Bronson Lakeview HospitalPaw Paw, MI
- Bronson Methodist HospitalKalamazoo, MI
- Sturgis HospitalSturgis, MI
- Three Rivers HealthThree Rivers, MI
Other facilities
- Beacon PlainwellLong-term care hospital · Plainwell, MI
Industry payments (Open Payments)
- 2025$785.17 · 33 payments from 13 companies
- 2024$569.32 · 23 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $163.03 | 11 |
| Cequr Corporation | $112.20 | 1 |
| Corcept Therapeutics | $87.58 | 2 |
| Novo Nordisk Inc | $85.92 | 4 |
| Neurocrine Biosciences, Inc. | $76.57 | 3 |
What the 2025 payments were for
- Food and Beverage$785.17 · 33 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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