DR. DAVID C GEIER M.D.
NPI 1649273913
Family Medicine in Williston, ND
About Dr. David C Geier M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DAVID C GEIER M.D. (NPI 1649273913) is an individual family medicine provider in Williston, North Dakota, licensed in North Dakota (9477) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS, is affiliated with Mckenzie County Healthcare Systems Inc, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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. David C Geier M.d. 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 David Geier reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Williston, ND 58801
- Reassigned Medicare billing, North Dakota enrollment
- Also billed through NPI 1518988948 (North Dakota)
- 108 clinicians in this Medicare group
Harvey, ND 58341
- Reassigned Medicare billing, North Dakota enrollment
- 29 clinicians in this Medicare group
Warren, MN 56762
- Reassigned Medicare billing, Minnesota enrollment
- 107 clinicians in this Medicare group
Redfield, SD 57469
- Reassigned Medicare billing, South Dakota enrollment
- Also billed through NPI 1548232747 (South Dakota)
- 20 clinicians in this Medicare group
Montevideo, MN 56265
- Reassigned Medicare billing, Minnesota enrollment
- 149 clinicians in this Medicare group
Lamberton, MN 56152
- Reassigned Medicare billing, Minnesota enrollment
- 3,733 clinicians in this Medicare group
Lake City, MN 55041
- Reassigned Medicare billing, Minnesota enrollment
- Also billed through NPI 1164463659 (Minnesota)
- 675 clinicians in this Medicare group
Waterloo, IA 50702
- Reassigned Medicare billing, Iowa enrollment
- 70 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mckenzie County Healthcare Systems Inc
Critical Access Hospitals · Watford City, NDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 58801 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WILLISTON, ND 58801
WILLISTON, ND 58801
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 David Geier's NPI number?
The NPI number for David Geier is 1649273913. It was assigned to this individual provider in the NPPES registry on May 31, 2005.
Where is David Geier located?
David Geier practices at 3 4th St E, Williston, ND 58801. The listed phone number is (701) 577-6337.
What is David Geier's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is David Geier enrolled in Medicare?
Yes. David Geier 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 David Geier's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Geier reassigns Medicare benefits to 8 organizations: Mckenzie County Healthcare Systems Inc (Williston, ND), St Aloisius Hospital Inc (Harvey, ND), Warren Community Hospital, Inc. (Warren, MN), City Of Redfield (Redfield, SD), Ccm Health (Montevideo, MN) 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 David Geier's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Geier accept?
Health plans from Blue Cross Blue Shield of North Dakota, Oscar Insurance Company, Sanford Health Plan, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list David Geier 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 David Geier affiliated with any hospitals?
According to CMS data, David Geier is affiliated with Mckenzie County Healthcare Systems Inc.
When was this NPI record last updated?
The NPPES record for David Geier was last updated on August 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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. David C Geier, M.D. · NPI 1649273913
Family Medicine physician in Williston, North Dakota. Individual provider, active in the CMS NPPES registry since May 31, 2005.
## Identity
- **NPI:** 1649273913 (Entity type: Individual)
- **Enumerated:** May 31, 2005
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 9477 (North Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 3 4TH ST E, Williston, ND 58801-5350
- **Phone:** (701) 577-6337 · **Fax:** (701) 577-6338
## 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): Mckenzie County Healthcare Systems Inc (NPI 1396516506, Williston, ND); St Aloisius Hospital Inc (NPI 1457477218, Harvey, ND); Warren Community Hospital, Inc. (NPI 1073516357, Warren, MN); City Of Redfield (NPI 1972575173, Redfield, SD); Ccm Health (NPI 1275057978, Montevideo, MN); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Loma Linda University School Of Medicine, class of 2000
## Record status
- **NPPES last updated:** August 19, 2026
- **Other identifiers:** Medicaid 12735 (ND)
---
Source: [NPI Profile](https://npiprofile.com/npi/1649273913) · Data from the CMS NPPES public registry.