Active NPI
Landon Mitchell Frank
- Internal Medicine Physician
- Tahlequah, OK
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- 8183
- Practice address
- 1400 E Downing St
Tahlequah, OK 74464-3324 - Phone
- (918) 456-0641
- NPI assigned
- Jun 7, 2021
- Last updated
- Aug 12, 2025
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Student in an Organized Health Care Education/Training Program | 390200000X | |||
| Internal Medicine Physician | 207R00000X | 8183 | OK | Primary |
Addresses
Primary practice location
1400 E Downing St
Tahlequah, OK 74464-3324
Mailing address
1400 E Downing St
Tahlequah, OK 74464-3324
Phone (918) 456-0641
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in OK
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Internal Medicine
- Education
- Oklahoma State University College of Osteopathic Medicine, 2022
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1400 E Downing St
Tahlequah, OK 74464-3324
Phone (918) 456-0641
Hospital & facility affiliations
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Northeastern Health System | Current | Accepting new patients | |
| Northeastern Health System | Current | Accepting new patients | |
| Northeastern Health System | Current | Accepting new patients | |
| Northeastern Health System | Past | Accepting new patients |
Locations
1373 E Boone St
Ste 2300
Tahlequah, OK 74464
Phone (918) 207-0025
1400 E Downing St
Tahlequah, OK 74464
Phone (918) 456-0641
Interoperability endpoints
- https://fhir-myrecord.cerner.com/r4/932b43fb-c766-413c-a343-640549d20cb3/
Organizations & group practices 4
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
- Emergency Medicine Physician
- Tahlequah, OK
- NPI 1457574170
-
dba Tahlequah City Hospital
- General Acute Care Hospital
- Tahlequah, OK
- NPI 1003865999
-
dba Tahlequah Medical Group Primary Care
- Rural Health Clinic/Center
- Tahlequah, OK
- NPI 1306387949
-
- Psychiatric Hospital Unit
- Tahlequah, OK
- NPI 1619031465
Hospital & facility affiliations 6
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Tahlequah, OK
- NPI 1275799645
-
dba Tahlequah City Hospital
- General Acute Care Hospital
- Tahlequah, OK
- NPI 1003865999
-
dba Fort Gibson Medical Clinic
- Rural Health Clinic/Center
- Fort Gibson, OK
- NPI 1013458652
Hospital
-
dba Tahlequah Medical Group Primary Care
- Rural Health Clinic/Center
- Tahlequah, OK
- NPI 1306387949
Hospital
-
- Addiction (Substance Use Disorder) Counselor
- Tahlequah, OK
- NPI 1689338519
Hospital
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1623024000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1754956800000",
"number": "1427625714",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1400 E DOWNING ST",
"city": "TAHLEQUAH",
"state": "OK",
"postal_code": "744643324",
"telephone_number": "918-456-0641"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1400 E DOWNING ST",
"city": "TAHLEQUAH",
"state": "OK",
"postal_code": "744643324",
"telephone_number": "918-456-0641"
}
],
"practiceLocations": [],
"basic": {
"last_name": "FRANK",
"first_name": "LANDON",
"middle_name": "MITCHELL",
"name_prefix": "Mr.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2021-06-07",
"last_updated": "2025-08-12",
"certification_date": "2025-08-12",
"status": "A"
},
"taxonomies": [
{
"code": "390200000X",
"taxonomy_group": "",
"desc": "Student in an Organized Health Care Education/Training Program",
"state": null,
"license": null,
"primary": false
},
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "OK",
"license": "8183",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Tahlequah, OK
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 12, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.