Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Karin L Andersson, MD

Individual provider Internal Medicine Physician · NPI 1972585511

Dr. Karin L Andersson, MD practises Gastroenterology in Boston, Massachusetts. Graduated from Yale University School of Medicine in 2000, 26 years ago. Practices with The General Hospital Corporation, a 1,276-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
26
Trained at
Yale University School of Medicine
Licensed in
MA
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

55 Fruit St Massachusetts General Hospital Grj 722
Boston, MA 02114-2621 Not confirmed with CMS for 14 years — call before visiting
Phone: (617) 724-6113
Fax: (617) 726-3673
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 213884 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 213884 (MA)

Record details

NPI number1972585511
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 18, 2005
Last updated in NPPESOctober 23, 2012

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2000 (26 years in practice)
Group practice The General Hospital Corporation — 1276 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Upper gastrointestinal (GI) endoscopy for acid reflux 27 times · 54th percentile
Colonoscopy 29 times · 53rd percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients298
Services billed 552 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at The General Hospital Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1276 clinicians in the practice; 12 are shown here.

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