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

Jeffrey Semeyn, DO

Individual provider Family Medicine Physician · NPI 1598800609

Jeffrey Semeyn, DO is registered under Family Practice in St. Robert, Missouri. Qualified in 2004, 22 years ago. Practices with Mercy Clinic Springfield Communities, a 1,126-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
22
Licensed in
MO
In the registry since
2007
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.

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Practice location Address checks out

608 City Route 66
St. Robert, MO 65584
Phone: (573) 336-5100
Fax: (573) 336-3118
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 2010028295 (MO)

Record details

NPI number1598800609
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedFebruary 20, 2007
Last updated in NPPESMarch 7, 2023

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Mercy Clinic Springfield Communities — 1126 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 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 patients90
Services billed 131 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. Those with a page here are linked.

Colleagues at Mercy Clinic Springfield Communities

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1126 clinicians in the practice; 12 are shown here.

Other providers in St. Robert