Man Chin Chang, M.D.
NPI 1346442563ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Providence, RI
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Providence, Rhode Island, trained at University of Connecticut School of Medicine (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $3,613,319 for 11,146 claims, against $175,923 paid for services in 2024. Amgen Inc. was the largest of 3 companies reporting payments in 2025, $427.30 in all, mostly food and beverage.
Overview
| NPI | 1346442563 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 1, 2007 |
| Last updated in NPPES | Dec 17, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | MD13879 | RI |
| Internal Medicine | 207R00000X | LP01043 | RI |
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 (RI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 567 |
|---|---|
| Services billed | 7,230 across 37 procedure codes |
| Paid by Medicare | $175,923 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,146 · 22,918 30-day fills |
|---|---|
| Patients | 1,157 |
| Total drug cost | $3,613,319 |
| Generic share | 45% of claims |
Education and affiliations
| Medical school | University of Connecticut School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Endocrinology |
Medical group
- Diabetes and Endocrinology Associates, Inc.Providence, RI · 5 clinicians
Hospital affiliations
- Kent County Memorial HospitalWarwick, RI
- Rhode Island HospitalProvidence, RI
- South County Hospital IncWakefield, RI
- The Miriam HospitalProvidence, RI
- Women & Infants Hospital of Rhode IslandProvidence, RI
Industry payments (Open Payments)
- 2025$427.30 · 13 payments from 3 companies
- 2024$70.77 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $285.58 | 5 |
| Abbvie Inc. | $120.56 | 7 |
| Sequel Med Tech, LLC | $21.16 | 1 |
What the 2025 payments were for
- Food and Beverage$427.30 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Rhode Island →