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

Michael Horn, MD

Individual provider Anesthesiology Physician · NPI 1982699922

Michael Horn, MD practises Anesthesiology in Hagerstown, Maryland. Graduated from Icahn School of Medicine at Mount Sinai in 1981, 45 years ago. Practices with U of R Anesthesiology Group, a 336-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maryland, Missouri and New York.

Years since qualifying
45
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
MD, MO, NY
In the registry since
2005
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

251 E Antietam St
Hagerstown, MD 21740
Phone: (301) 790-8501
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1402 S Grand Blvd # M238, Saint Louis, MO 63104-1004 — (314) 977-8462

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 2026039196 (MO)
Anesthesiology Physician Taxonomy 207L00000X · Licence 153106 (NY)
Anesthesiology Physician Taxonomy 207L00000X · Licence D50153 (MD)

Record details

NPI number1982699922
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 15, 2005
Last updated in NPPESSeptember 24, 2026
Certification dateSeptember 24, 2026

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 1981 (45 years in practice)
Group practice U Of R Anesthesiology Group — 336 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients155
Services billed 169 a service is one billed item, such as a visit, a test or a procedure
Average patient age67

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 U of R Anesthesiology Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 336 clinicians in the practice; 12 are shown here.

Other providers in Hagerstown