Active NPI
Cassandra Markham
- Nurse Practitioner
- Amarillo, TX
National Provider Identifier
1679440325
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Nurse Practitioner
- License
- 833761
- Practice address
- 2483 W Interstate 40
Amarillo, TX 79109-1852 - Phone
- (806) 463-3200
- Fax
- (806) 463-3179
- NPI assigned
- Oct 18, 2025
- Last updated
- Apr 4, 2026
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Nurse Practitioner | 363L00000X | 833761 | TX | Primary |
Addresses
Primary practice location
2483 W Interstate 40
Amarillo, TX 79109-1852
Mailing address
2483 W Interstate 40
Amarillo, TX 79109-1852
Phone (806) 463-3200
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 833761 | TX | MD | Nurse Practitioner |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Eres Bella, PLLC | Current | Accepting new patients |
Locations
5215 S Coulter St
Ste 200
Amarillo, TX 79119
Phone (806) 672-9929
Organizations & group practices 1
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.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1760745600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1775260800000",
"number": "1679440325",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2483 W INTERSTATE 40",
"city": "AMARILLO",
"state": "TX",
"postal_code": "791091852",
"telephone_number": "806-463-3200",
"fax_number": "806-463-3179"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2483 W INTERSTATE 40",
"city": "AMARILLO",
"state": "TX",
"postal_code": "791091852",
"telephone_number": "806-463-3200",
"fax_number": "806-463-3179"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MARKHAM",
"first_name": "CASSANDRA",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2025-10-18",
"last_updated": "2026-04-04",
"certification_date": "2026-04-04",
"status": "A"
},
"taxonomies": [
{
"code": "363L00000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner",
"state": "TX",
"license": "833761",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Amarillo, TX
- Christopher Marez-Nevarez
- Margaret E Thurmond Anderle MD PA
- Mark D Cettie (High Plains Podiatry Group)
- Mark Malone MD PA (Advanced Pain Care)
- Mark Malone MD PA (Advanced Pain Care)
- Kristine R Marks, MS, CCC/SLP
- Marlene's Home Medical Equipment & Supplies LLC
- Meghan Marnell, PH.D.
- Vonda Kay Marquez, COTA
- Haley Marshall, LCSW
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.