DR. MICHAEL DONNELL KELSO JR. MD
NPI 1679868277
Internal Medicine - Gastroenterology in Cambridge, MA
About Dr. Michael Donnell Kelso Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL DONNELL KELSO JR. MD (NPI 1679868277) is an individual gastroenterology provider in Cambridge, Massachusetts, licensed in Massachusetts (1017371) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS, is affiliated with Mercy Health - Lourdes Hospital, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Michael Donnell Kelso Jr. Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
7Medicare enrollment records show Michael Kelso reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cambridge, MA 02139
- Reassigned Medicare billing, Massachusetts enrollment
- 719 clinicians in this Medicare group
Springfield, MA 01199
- Reassigned Medicare billing, Massachusetts enrollment
- 1,537 clinicians in this Medicare group
Biddeford, ME 04005
- Reassigned Medicare billing, Maine enrollment
- 3,140 clinicians in this Medicare group
Huntersville, NC 28078
- Reassigned Medicare billing, North Carolina enrollment
- 89 clinicians in this Medicare group
Paducah, KY 42003
- Reassigned Medicare billing, Kentucky enrollment
- 283 clinicians in this Medicare group
Decatur, AL 35601
- Reassigned Medicare billing, Alabama enrollment
- 15 clinicians in this Medicare group
Decatur, AL 35602
- Reassigned Medicare billing, Alabama enrollment
- 9 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Health - Lourdes Hospital
Acute Care Hospitals · Paducah, KYPenobscot Bay Medical Center
Acute Care Hospitals · Rockport, MECambridge Health Alliance
Acute Care Hospitals · Cambridge, MABaystate Franklin Medical Center
Acute Care Hospitals · Greenfield, MABaystate Medical Center
Acute Care Hospitals · Springfield, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02139 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michael Kelso's NPI number?
The NPI number for Michael Kelso is 1679868277. It was assigned to this individual provider in the NPPES registry on June 13, 2011.
Where is Michael Kelso located?
Michael Kelso practices at 1493 Cambridge St, Cambridge, MA 02139. The listed phone number is (617) 665-1552.
What is Michael Kelso's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Michael Kelso enrolled in Medicare?
Yes. Michael Kelso is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Michael Kelso's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Kelso reassigns Medicare benefits to 7 organizations: Cambridge Public Health Commission (Cambridge, MA), Baystate Medical Practices, Inc (Springfield, MA), Mainehealth (Biddeford, ME), Charlotte Gastroenterology & Hepatology, PLLC (Huntersville, NC), Mercy Health Physicians Kentucky Specialty Care LLC (Paducah, KY) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Kelso's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Kelso accept?
Health plans from Ambetter Health, Ambetter of Alabama, Ambetter of Tennessee, Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care and 1 other insurer list Michael Kelso as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Michael Kelso affiliated with any hospitals?
According to CMS data, Michael Kelso is affiliated with Mercy Health - Lourdes Hospital, Penobscot Bay Medical Center, Cambridge Health Alliance, Baystate Franklin Medical Center and Baystate Medical Center.
When was this NPI record last updated?
The NPPES record for Michael Kelso was last updated on February 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Michael Donnell Kelso Jr., MD · NPI 1679868277
Gastroenterology physician in Cambridge, Massachusetts. Individual provider, active in the CMS NPPES registry since June 13, 2011.
## Identity
- **NPI:** 1679868277 (Entity type: Individual)
- **Enumerated:** June 13, 2011
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 1017371 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 1493 CAMBRIDGE ST, Cambridge, MA 02139-1099
- **Phone:** (617) 665-1552
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Cambridge Public Health Commission (NPI 1487603585, Cambridge, MA); Baystate Medical Practices, Inc (NPI 1548205909, Springfield, MA); Mainehealth (NPI 1215417019, Biddeford, ME); Charlotte Gastroenterology & Hepatology, PLLC (NPI 1730100801, Huntersville, NC); Mercy Health Physicians Kentucky Specialty Care LLC (NPI 1700408093, Paducah, KY); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** February 2, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1679868277) · Data from the CMS NPPES public registry.