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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SHERI D CHRISTIAN-ARMSTRONG DO
NPI 1679996706
Internal Medicine in Tahlequah, OK

Active since January 24, 2014PECOS EnrolledAccepts Medicare Assignment
1201 E ROSS BYP, TAHLEQUAH, OK 74464(918) 456-2575 Get Directions Write a Review

NPPES record last updated: July 30, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 30, 2026, Feb 27, 2025 (2 updates tracked since 2025).

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 is a graduate of Oklahoma State University College Of Osteopathic Medicine (2013).

NPPES Registry Identity

NPI1679996706
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameSHERI D CHRISTIAN-ARMSTRONGCredential: DO
Location Address1201 E ROSS BYPTahlequah, OK 74464
Mailing AddressPo Box 100238Gainesville, FL 32610-0238 · (352) 294-8278
Phone(918) 456-2575
Sole ProprietorNo
Medical School CMSOklahoma State University College Of Osteopathic MedicineGraduated 2013
Enumeration DateJanuary 24, 2014
Last NPPES UpdateJuly 30, 20262 updates tracked since enumeration
NPPES CertifiedJuly 30, 2026
✔ NPI 1679996706 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in FL · OS21162✔ Licensed in OK · 5539✔ Licensed in WI · 3124
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License 3124 (WI)
1201 E ROSS BYP, Tahlequah, OK 74464
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource (Common Ground Healthcare), Medica, Mending Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID6103104138
PECOS Enrollment IDI20211014003180, I20240726001594, I20240919002028, I20250227000965
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
61 services31 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
25 services25 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
23 services23 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
17 services16 patients

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, FL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100113
Location1600 SW Archer RdGainesville, FL 32610 · Alachua County
Emergency services Birthing friendly

Valor Health

Critical Access Hospitals · Emmett, ID
OwnershipGovernment - Local
CMS Certification Number131318
Location1202 East Locust StreetEmmett, ID 83617 · Gem County
Emergency services

Huggins Hospital

Critical Access Hospitals · Wolfeboro, NH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number301312
Location240 South Main StreetWolfeboro, NH 03894 · Carroll County
Emergency services

Thedacare Regional Medical Center - Appleton Inc

Acute Care Hospitals · Appleton, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520160
Location1818 N Meade StAppleton, WI 54911 · Outagamie County
Emergency services Birthing friendly

Physician 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.

New Patient
$123.06 typical visit price
range $53.00 – $162.61
Typical copayment $30.76 (range $13.25 – $40.65)
Most-billed visit code 99204
Established Patient
$94.27 typical visit price
range $16.68 – $132.40
Typical copayment $23.56 (range $4.17 – $33.10)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

NORTHEASTERN HEALTH SYSTEM
Clinic/Center (Rural Health)
1201 E ROSS BYP
TAHLEQUAH, OK 74464
Cherokee County (918) 207-0991
STEPHANIE NICOLE LECRONE APRN
Nurse Practitioner (Family)
1201 E ROSS BYP
TAHLEQUAH, OK 74464
Cherokee County (918) 207-0991

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.

What insurance does Sheri Christian-armstrong accept?

Health plans from CareSource (Common Ground Healthcare), Medica and Mending 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 21 days 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.