DR. MICHAEL DONNELL KELSO JR. MD
NPI 1679868277
Internal Medicine - Gastroenterology in Cambridge, MA

Active since June 13, 2011PECOS EnrolledAccepts Medicare Assignment
1493 CAMBRIDGE ST, CAMBRIDGE, MA 02139(617) 665-1552 Get Directions Write a Review

NPPES record last updated: February 2, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 2, 2026, Aug 11, 2025, Dec 9, 2021 and 1 more (4 updates tracked since 2017).

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

NPI1679868277
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. MICHAEL DONNELL KELSO JR.Credential: MD
Location Address1493 CAMBRIDGE STCambridge, MA 02139-1099
Mailing Address1215 7th St Se Ste G200Decatur, AL 35601-3387 · (256) 973-3225 · Fax (256) 301-3860
Sole ProprietorNo
Medical School CMSOtherGraduated 2011
Enumeration DateJune 13, 2011
Last NPPES UpdateFebruary 2, 20264 updates tracked since enumeration
NPPES CertifiedFebruary 2, 2026
NPI 1679868277 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Licenses Licensed in MA · 1017371 Licensed in ME · MD29794 Licensed in NC · 201700853 Licensed in AL · MD.37611 Licensed in KY · C4462
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
1493 CAMBRIDGE ST, Cambridge, MA 02139

Secondary Practice Locations 4

Location 11215 7th St SE Ste G200Decatur, AL 35601-3387 · Phone (256) 973-3225 · Fax (256) 301-3860
Location 24 Glen Cove Dr Ste 10Rockport, ME 04856-4235 · Phone (207) 301-5790 · Fax (207) 301-5310
Location 3225 Medical Center Dr Ste 308Paducah, KY 42003-7915 · Phone (270) 443-0777
Location 41340 Matthews Township Pkwy Ste 301Matthews, NC 28105-4681 · Phone (704) 377-4009 · Fax (704) 844-2679

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID2062781743
PECOS Enrollment IDI20190124003595, I20240329002414, I20250903002686, I20260212001861
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
53 services53 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
44 services44 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
27 services27 patients
Diagnostic exam of large bowel using a flexible endoscope 45378
This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.
15 services15 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
14 services14 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercy Health - Lourdes Hospital

Acute Care Hospitals · Paducah, KY
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number180102
Location1530 Lone Oak RoadPaducah, KY 42003 · Mc Cracken County
Emergency services Birthing friendly

Penobscot Bay Medical Center

Acute Care Hospitals · Rockport, ME
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number200063
Location6 Glen Cove DriveRockport, ME 04856 · Knox County
Emergency services Birthing friendly

Cambridge Health Alliance

Acute Care Hospitals · Cambridge, MA
3/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number220011
Location1493 Cambridge StreetCambridge, MA 02138 · Middlesex County
Emergency services Birthing friendly

Baystate Franklin Medical Center

Acute Care Hospitals · Greenfield, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220016
Location164 High StreetGreenfield, MA 01301 · Franklin County
Emergency services Birthing friendly

Physician 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.

New Patient
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Emergency Medicine
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Social Worker (Clinical)
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Registered Nurse
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Registered Nurse
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Social Worker (Clinical)
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Registered Nurse (Ambulatory Care)
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Registered Nurse (Neonatal, Low-Risk)
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139
Occupational Therapist
1493 CAMBRIDGE ST
CAMBRIDGE, MA 02139

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.

What insurance does Michael Kelso accept?

Health plans from Ambetter Health, Ambetter from Magnolia Health, Ambetter of Alabama, Ambetter of Tennessee and Anthem Blue Cross and Blue Shield and 4 other insurers 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 and Baystate Franklin 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 6 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.