Jeffrey Semeyn, D.O.
Family Medicine Physician · St Robert, MO
Jeffrey Semeyn, D.O. is a family medicine physician with a practice address in St Robert, Missouri, and NPI 1598800609, issued on Feb 20, 2007. Check the license (Missouri 2010028295, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Jeffrey Semeyn
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 2010028295 MO
Self-reported in NPPES; status is on the state search - Practice location
- 608 City Route 66, St Robert, MO 65584
- Phone
- (573) 336-5100
- Enumerated
- Feb 20, 2007
- Record last updated
- Mar 7, 2023
- Fax
- (573) 336-3118
- Medicaid ID
- 1598800609 MO
- Medicare enrollment
- Enrolled (PECOS I20100923000086); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 608 City Route 66
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Catherine Gray, FNPFamily Nurse Practitioner1497893440
- Saima Jabeen, MDInternal Medicine Physician1316976582
- Debra McCaul, MDFamily Medicine Physician1376692939
- Christopher Morse, MDFamily Medicine Physician1811035728
- Rachel Nix, CNPFamily Nurse Practitioner1194267708
- David Reid, MDFamily Medicine Physician1528279486
Verify Jeffrey Semeyn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2010028295Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average family medicine physician in 2024
9,203 Medicare Part D claims for 639 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 670 claims were for opioids.
Most prescribed
- Levothyroxine Sodium425 claims
- Tramadol Hcl305 claims
- Losartan Potassium299 claims
- Famotidine268 claims
- Lisinopril251 claims
- Glipizide238 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Mercy Clinic Springfield CommunitiesRolla, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
5 family medicine physician records list a practice address in St Robert
They are 5 of the 15 NPPES records with a practice address in St Robert, and 2,991 family medicine physician records in Missouri.
All 5 in St Robert → All 2,991 in Missouri → Every provider in St Robert →
Other family medicine physician records in Missouri
- Mohammad Abbas, DOKirksville, MO1518537679
- Brandon Abbott, D.O.Kansas City, MO1356875702
- Ann Abbott Marin, DOArnold, MO1477132421
- Mohamed Abdalaziz, MDKansas City, MO1538578075
- Karam Abdelmasih, MD, APFestus, MO1093288508
- Afsheen Abdullah Patel, MDLees Summit, MO1598070377
- Christopher Abercrombie, DOArnold, MO1093787558
- Avery Abernathy, D.O.Kansas City, MO1013207836
- Kristia Abernathy, MDSaint Louis, MO1710545405
- Grant Abkemeier, DOColumbia, MO1922933712
Common questions
What is Jeffrey Semeyn, D.O.'s NPI number?
Jeffrey Semeyn, D.O.'s National Provider Identifier (NPI) is 1598800609, issued on Feb 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey Semeyn, D.O. located?
The NPPES record lists a practice address at 608 City Route 66, St Robert, MO, 65584. Phone: (573) 336-5100. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey Semeyn, D.O.'s license?
NPPES lists Missouri license number 2010028295, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jeffrey Semeyn, D.O. prescribe under Medicare Part D?
In 2024, Jeffrey Semeyn, D.O. had 9,203 Medicare Part D claims for 639 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.