SHERI D CHRISTIAN-ARMSTRONG DO
NPI 1679996706
Internal Medicine in Tahlequah, OK
About Sheri D Christian-armstrong Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SHERI D CHRISTIAN-ARMSTRONG DO (NPI 1679996706) is an individual internal medicine provider in Tahlequah, Oklahoma, licensed in Florida (OS21162) and active in the NPI registry since January 2014. She is enrolled in Medicare PECOS, is affiliated with Uf Health Shands Hospital, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 4
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
Sheri D Christian-armstrong Do 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
12Medicare enrollment records show Sheri Christian-armstrong reassigns Medicare billing to 12 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oklahoma City, OK 73134
- Reassigned Medicare billing, Oklahoma enrollment
- 1,058 clinicians in this Medicare group
Mount Pleasant, IA 52641
- Reassigned Medicare billing, Oklahoma enrollment
- 2 clinicians in this Medicare group
Marshalltown, IA 50158
- Reassigned Medicare billing, Iowa enrollment
- 214 clinicians in this Medicare group
Peoria, IL 61603
- Reassigned Medicare billing, Oklahoma enrollment
- 4 clinicians in this Medicare group
Fort Dodge, IA 50501
- Reassigned Medicare billing, Iowa enrollment
- 387 clinicians in this Medicare group
Urbana, IL 61801
- Reassigned Medicare billing, Oklahoma enrollment
- Medicare enrollment name: Carle Health Care Incorporated
- 4 clinicians in this Medicare group
Clovis, NM 88101
- Reassigned Medicare billing, New Mexico enrollment
- 2,331 clinicians in this Medicare group
Windsor, CO 80528
- Reassigned Medicare billing, Colorado and Nevada enrollments
- 7 clinicians in this Medicare group
Stockbridge, GA 30281
- Reassigned Medicare billing, Georgia enrollment
- 792 clinicians in this Medicare group
Menasha, WI 54952
- Reassigned Medicare billing, Wisconsin and Oklahoma enrollments
- Also billed through NPI 1376656959 (Oklahoma)
- 988 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 4
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.
Uf Health Shands Hospital
Acute Care Hospitals · Gainesville, FLValor Health
Critical Access Hospitals · Emmett, IDHuggins Hospital
Critical Access Hospitals · Wolfeboro, NHThedacare Regional Medical Center - Appleton Inc
Acute Care Hospitals · Appleton, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 74464 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Sheri Christian-armstrong's NPI number?
The NPI number for Sheri Christian-armstrong is 1679996706. It was assigned to this individual provider in the NPPES registry on January 24, 2014.
Where is Sheri Christian-armstrong located?
Sheri Christian-armstrong practices at 1201 E Ross Byp, Tahlequah, OK 74464. The listed phone number is (918) 456-2575.
What is Sheri Christian-armstrong's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Sheri Christian-armstrong enrolled in Medicare?
Yes. Sheri Christian-armstrong 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 Sheri Christian-armstrong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sheri Christian-armstrong reassigns Medicare benefits to 12 organizations: Integris Ambulatory Care Corporation (Oklahoma City, OK), Henry County Health Center Inc (Mount Pleasant, IA), Unitypoint Health - Marshalltown (Marshalltown, IA), Methodist Medical Center Of Illinois (Peoria, IL), Trinity Regional Medical Center (Fort Dodge, IA) and 7 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 Sheri Christian-armstrong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sheri Christian-armstrong accept?
Health plans from Blue Cross and Blue Shield of Texas, CareSource (Common Ground Healthcare), Mending Health and Select Health list Sheri Christian-armstrong 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 Sheri Christian-armstrong affiliated with any hospitals?
According to CMS data, Sheri Christian-armstrong is affiliated with Uf Health Shands Hospital, Valor Health, Huggins Hospital and Thedacare Regional Medical Center - Appleton Inc.
When was this NPI record last updated?
The NPPES record for Sheri Christian-armstrong was last updated on July 30, 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.
# Sheri D Christian-Armstrong, DO · NPI 1679996706
Internal Medicine physician in Tahlequah, Oklahoma. Individual provider, active in the CMS NPPES registry since January 24, 2014.
## Identity
- **NPI:** 1679996706 (Entity type: Individual)
- **Enumerated:** January 24, 2014
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** OS21162 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 1201 E ROSS BYP, Tahlequah, OK 74464
- **Phone:** (918) 456-2575
## 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:** 12 organizations under Medicare reassignment (form CMS-855R): Integris Ambulatory Care Corporation (NPI 1750333936, Oklahoma City, OK); Henry County Health Center Inc (NPI 1871177477, Mount Pleasant, IA); Unitypoint Health - Marshalltown (NPI 1164957593, Marshalltown, IA); Methodist Medical Center Of Illinois (NPI 1184670663, Peoria, IL); Trinity Regional Medical Center (NPI 1073594156, Fort Dodge, IA); and 7 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Oklahoma State University College Of Osteopathic Medicine, class of 2013
## Record status
- **NPPES last updated:** July 30, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1679996706) · Data from the CMS NPPES public registry.