Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Aaron Mortensen, MD

Individual provider Anesthesiology Physician · NPI 1215023734

Aaron Mortensen, MD practises Anesthesiology in Lexington, Kentucky. Graduated from University of Vermont College of Medicine in 1998, 28 years ago. Practices with Mary Imogene Bassett Hospital, a 779-clinician group and accepts Medicare assignment. Licensed in Kentucky.

Years since qualifying
28
Trained at
University of Vermont College of Medicine
Licensed in
KY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Partly verified

Some contact details are missing from the federal record.

One St Joseph Dr
Lexington, KY 40504 Not confirmed with CMS for 19 years — call before visiting
Phone: (859) 313-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 37270 (KY)

Record details

NPI number1215023734
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 4, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF VERMONT COLLEGE OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice Mary Imogene Bassett Hospital — 779 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients128
Services billed 131 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 Mary Imogene Bassett Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 779 clinicians in the practice; 12 are shown here.

Other providers in Lexington