Sergio G. Demier, D.O.
Family Medicine Physician · Seminole, OK
Sergio G. Demier, D.O. is a family medicine physician with a practice address in Seminole, Oklahoma, and NPI 1558422337, issued on Dec 13, 2006. Check the license (Oklahoma 3350, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Sergio G. Demier
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 3350 OK
Self-reported in NPPES; status is on the state search - Practice location
- 2403 W Wrangler Blvd Ste A, Seminole, OK 74868
- Phone
- (405) 382-4939
- Enumerated
- Dec 13, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (405) 382-4947
- Medicare enrollment
- Enrolled (PECOS I20041208000087); accepts Medicare assignment
- Medical or professional school
- Oklahoma State University College Of Osteopathic Medicine, 1993
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,303 in Oklahoma → Look up another NPI →
Also registered at 2403 W Wrangler Blvd Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Justin Burnett, MDFamily Medicine Physician1144845496
- Tricia Butner, ARNPFamily Nurse Practitioner1760487243
- Ronald Pauls, PA-CPhysician Assistant1912182627
- Emily Payne, MSN, FNP-BCFamily Nurse Practitioner1437671328
- Kelli Rollins, ARNPFamily Nurse Practitioner1700033867
- Angela Yates-Griffin, APRN, CNPFamily Nurse Practitioner1316350713
Verify Sergio G. Demier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 3350Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average family medicine physician in 2024
525 Medicare Part D claims for 205 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 77 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen50 claims
- Methylprednisolone48 claims
- Naproxen46 claims
- Azithromycin34 claims
- Ciprofloxacin Hcl24 claims
- Ondansetron Odt24 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.
4 hospitals and group practices
- Arbuckle Memorial HospitalSulphur, OK · Critical Access Hospitals4 of 5 stars
- Cimarron Memorial Hospital And Nursing HomeBoise City, OK
- Memorial Hospital OF Texas County AuthorityGuymon, OK · Critical Access Hospitals
- Newman Memorial Hospital, IncShattuck, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Sergio G. Demier among 2,303 family medicine physician records in Oklahoma
Sergio G. Demier, D.O. is one of 2,303 family medicine physician records with a practice address in Oklahoma. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1993 · median 2008 among the 1,407 with a school on file
- Record last updated2007 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 family medicine physician records list a practice address in Seminole
They are 7 of the 127 NPPES records with a practice address in Seminole, and 2,303 family medicine physician records in Oklahoma.
All 2,303 in Oklahoma → Every provider in Seminole → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Javaria Asif, M.D.Seminole, OK 748681538355441
- Justin Burnett, MDSeminole, OK 748681144845496
- Stephen Feuerborn, M.D.Seminole, OK 748681760441612
- Jenna Geohagan, M.D.Seminole, OK 748681760879076
- Randall Kemp, D.O.Seminole, OK 748681326043803
- Randee Walck-Coetzee, MDSeminole, OK 748681336713213
- Darryl Jackson, DOPrague, OK 748641801992243
- Denny Parton, DOPrague, OK 748641053348821
Common questions
What is Sergio G. Demier, D.O.'s NPI number?
Sergio G. Demier, D.O.'s National Provider Identifier (NPI) is 1558422337, issued on Dec 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sergio G. Demier, D.O. located?
The NPPES record lists a practice address at 2403 W Wrangler Blvd Ste A, Seminole, OK, 74868. Phone: (405) 382-4939. Providers update this record themselves, so call before visiting.
How can I verify Sergio G. Demier, D.O.'s license?
NPPES lists Oklahoma license number 3350, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sergio G. Demier, D.O. prescribe under Medicare Part D?
In 2024, Sergio G. Demier, D.O. had 525 Medicare Part D claims for 205 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.