Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Michael P Hemmersmeier, DO

Individual provider Family Medicine Physician · NPI 1366404832

Dr. Michael P Hemmersmeier, DO is a Family Practice in O Fallon, Missouri. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1995, 31 years ago. Practices with SSM Medical Group Inc, a 560-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
31
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
MO
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1101 Highway K
O Fallon, MO 63366-8431
Phone: (636) 379-4590
Fax: (636) 669-2401
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 108737 (MO)

Record details

NPI number1366404832
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 3, 2006
Last updated in NPPESOctober 22, 2020
Certification dateOctober 22, 2020
Mailing addressPo Box 955534 Suite 310, Saint Louis, MO 63195-3539

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 1995 (31 years in practice)
Group practice Ssm Medical Group Inc — 560 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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