Michael Donnell Kelso Jr., MD
NPI 1679868277ActiveIndividual· Internal Medicine, Gastroenterology· Cambridge, MA
Internal Medicine, Gastroenterology (MD) with Mainehealth and 3 other groups, practicing in Cambridge, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $100,675 for 362 claims, against $23,880 paid for services in 2024. Ardelyx, Inc. was the largest of 4 companies reporting payments in 2025, $373.89 in all, mostly food and beverage. Lists Baystate Franklin Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1679868277 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 13, 2011 |
| Last updated in NPPES | Feb 2, 2026 |
| Certified by provider | Feb 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 1017371 | MA |
| Internal Medicine, Gastroenterology | 207RG0100X | MD29794 | ME |
| Internal Medicine, Gastroenterology | 207RG0100X | 201700853 | NC |
| Internal Medicine, Gastroenterology | 207RG0100X | MD.37611 | AL |
| Internal Medicine, Gastroenterology | 207RG0100X | C4462 | KY |
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 - Gastroenterology (AL); Practitioner - Gastroenterology (KY); Practitioner - Gastroenterology (MA); Practitioner - Gastroenterology (ME); Practitioner - Gastroenterology (NC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 145 |
|---|---|
| Services billed | 208 across 17 procedure codes |
| Paid by Medicare | $23,880 |
Part D prescriptions in 2024
| Prescriptions (claims) | 362 · 799 30-day fills |
|---|---|
| Patients | 149 |
| Total drug cost | $100,675 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical groups
- MainehealthPortland, ME · 2,633 clinicians
- Baystate Medical Practices IncSpringfield, MA · 1,369 clinicians
- Cambridge Public Health CommissionEverett, MA · 656 clinicians
- Mercy Health Physicians Kentucky Specialty Care LLCPaducah, KY · 151 clinicians
Hospital affiliations
- Baystate Franklin Medical CenterGreenfield, MA
- Baystate Medical CenterSpringfield, MA
- Cambridge Health AllianceCambridge, MA
- Mainehealth Pen Bay HospitalRockport, ME
- Mercy Health - Lourdes HospitalPaducah, KY
Industry payments (Open Payments)
- 2025$373.89 · 12 payments from 4 companies
- 2024$268.11 · 13 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $148.58 | 4 |
| Abbvie Inc. | $138.89 | 3 |
| Takeda Pharmaceuticals U.S.A., Inc. | $51.40 | 3 |
| Janssen Biotech, Inc. | $35.02 | 2 |
What the 2025 payments were for
- Food and Beverage$373.89 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Cambridge
- 1043447519
- 1104883347
- 1194887505
- 1326438953
- 1568466316
- 1851382360
- 1255785713
- 1952338253
- 1265056816
- 1801963806
- 1144593757
- 1194895151
All 23 gastroenterologists in Cambridge · All gastroenterologists in Massachusetts