John Joseph Grechus, M.D.
Obstetrics & Gynecology Physician · Farmington, MO
John Joseph Grechus, M.D. is an obstetrics & gynecology physician with a practice address in Farmington, Missouri, and NPI 1831171560, issued on Nov 17, 2005. Check the license (Missouri R5F25, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- John Joseph Grechus
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- R5F25 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1103 Weber RD Ste 203, Farmington, MO 63640
- Phone
- (573) 756-9107
- Enumerated
- Nov 17, 2005
- Record last updated
- Dec 30, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (573) 756-9630
- Medicare enrollment
- Enrolled (PECOS I20111227000533); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Kansas City, School Of Medicine, 1983
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 902 in Missouri → Look up another NPI →
Also registered at 1103 Weber RD Ste 203
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cheryl Townsend, RN WHNP-BCWomen's Health Nurse Practitioner1548315914
Verify John Joseph Grechus 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 R5F25Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
40 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol17 claims
- Oxybutynin Chloride13 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
- Great Mines Health CenterPotosi, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Joseph Grechus among 902 obstetrics & gynecology physician records in Missouri
John Joseph Grechus, M.D. is one of 902 obstetrics & gynecology physician records with a practice address in Missouri. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1983 · median 2007 among the 528 with a school on file
- Record last updated2011 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Missouri
There are 902 obstetrics & gynecology physician records in Missouri.
All 902 in Missouri → Every provider in Farmington → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Joan Azoury, M.DFarmington, MO 636401154771715
- John Cooper, MDFarmington, MO 636401093193377
- Luis Mertins, MDFarmington, MO 636401457321838
- Lauren Ostler, MDFarmington, MO 636401902547540
- Hannah Kertz, MDSainte Genevieve, MO 636701043716830
- Tony Lam, MDSte Genevieve, MO 636701093742314
- Paul Clarke, M.D.Cape Girardeau, MO 637011912016056
- Heather Cugini, M.D.Cape Girardeau, MO 637011669707113
Common questions
What is John Joseph Grechus, M.D.'s NPI number?
John Joseph Grechus, M.D.'s National Provider Identifier (NPI) is 1831171560, issued on Nov 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Joseph Grechus, M.D. located?
The NPPES record lists a practice address at 1103 Weber RD Ste 203, Farmington, MO, 63640. Phone: (573) 756-9107. Providers update this record themselves, so call before visiting.
How can I verify John Joseph Grechus, M.D.'s license?
NPPES lists Missouri license number R5F25, 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 John Joseph Grechus, M.D. prescribe under Medicare Part D?
In 2024, John Joseph Grechus, M.D. had 40 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.