DR. SERGIO G DEMIER D.O.
NPI 1558422337
Family Medicine in Seminole, OK
About Dr. Sergio G Demier D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SERGIO G DEMIER D.O. (NPI 1558422337) is an individual family medicine provider in Seminole, Oklahoma, licensed in Oklahoma (3350) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Cimarron Memorial Hospital, and is a graduate of Oklahoma State University College Of Osteopathic Medicine (1993).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Sergio G Demier D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
8Medicare enrollment records show Sergio Demier reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Noble, OK 73068
- Reassigned Medicare billing, Oklahoma enrollment
- 3 clinicians in this Medicare group
Sulphur, OK 73086
- Reassigned Medicare billing, Oklahoma enrollment
- 20 clinicians in this Medicare group
Mcalester, OK 74501
- Reassigned Medicare billing, Oklahoma enrollment
- 16 clinicians in this Medicare group
Mooreland, OK 73852
- Reassigned Medicare billing, Oklahoma enrollment
- Also billed through NPI 1083617807 (Oklahoma)
- 62 clinicians in this Medicare group
Hooker, OK 73945
- Reassigned Medicare billing, Oklahoma enrollment
- 11 clinicians in this Medicare group
Lubbock, TX 79401
- Reassigned Medicare billing, Oklahoma enrollment
- 33 clinicians in this Medicare group
Lubbock, TX 79401
- Reassigned Medicare billing, Oklahoma enrollment
- 30 clinicians in this Medicare group
Boise City, OK 73933
- Reassigned Medicare billing, Oklahoma enrollment
- Also billed through NPI 1164493904 (Oklahoma)
- 5 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 11
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Cimarron Memorial Hospital
Critical Access Hospitals · Boise City, OKArbuckle Memorial Hospital
Critical Access Hospitals · Sulphur, OKNewman Memorial Hospital
Critical Access Hospitals · Shattuck, OKMemorial Hospital Of Texas County Authority
Critical Access Hospitals · Guymon, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 74868 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SEMINOLE, OK 74868
SEMINOLE, OK 74868
SEMINOLE, OK 74868
SEMINOLE, OK 74868
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Sergio Demier's NPI number?
The NPI number for Sergio Demier is 1558422337. It was assigned to this individual provider in the NPPES registry on December 13, 2006.
Where is Sergio Demier located?
Sergio Demier practices at 2403 W Wrangler Blvd Ste A, Seminole, OK 74868. The listed phone number is (405) 382-4939.
What is Sergio Demier's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Sergio Demier enrolled in Medicare?
Yes. Sergio Demier is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Sergio Demier's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sergio Demier reassigns Medicare benefits to 8 organizations: Noble Family Healthcare Clinic (Noble, OK), Arbuckle Memorial Hospital (Sulphur, OK), Oklahoma Emergency Partners LLC (Mcalester, OK), Newman Memorial Hospital, Inc (Mooreland, OK), Memorial Hospital Of Texas County Authority (Hooker, OK) and 3 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sergio Demier's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sergio Demier accept?
Health plans from Blue Cross and Blue Shield of Oklahoma list Sergio Demier as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Sergio Demier affiliated with any hospitals?
According to CMS data, Sergio Demier is affiliated with Cimarron Memorial Hospital, Arbuckle Memorial Hospital, Newman Memorial Hospital and Memorial Hospital Of Texas County Authority.
When was this NPI record last updated?
The NPPES record for Sergio Demier was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Sergio G Demier, D.O. · NPI 1558422337
Family Medicine physician in Seminole, Oklahoma. Individual provider, active in the CMS NPPES registry since December 13, 2006.
## Identity
- **NPI:** 1558422337 (Entity type: Individual)
- **Enumerated:** December 13, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 3350 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 2403 W WRANGLER BLVD STE A, Seminole, OK 74868-1900
- **Phone:** (405) 382-4939 · **Fax:** (405) 382-4947
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Noble Family Healthcare Clinic (NPI 1447327622, Noble, OK); Arbuckle Memorial Hospital (NPI 1700869492, Sulphur, OK); Oklahoma Emergency Partners LLC (NPI 1245945039, Mcalester, OK); Newman Memorial Hospital, Inc (NPI 1497639181, Mooreland, OK); Memorial Hospital Of Texas County Authority (NPI 1356047526, Hooker, OK); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Oklahoma State University College Of Osteopathic Medicine, class of 1993
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare UPIN G36851
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Source: [NPI Profile](https://npiprofile.com/npi/1558422337) · Data from the CMS NPPES public registry.