Cassandra Markham
Nurse Practitioner · Amarillo, TX
Cassandra Markham is a nurse practitioner with a practice address in Amarillo, Texas, and NPI 1679440325, issued on Oct 18, 2025. Check the license (Texas 833761, as entered in NPPES) with the Texas board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Cassandra Markham
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 833761 TX
Self-reported in NPPES; status is on the state search - Practice location
- 2483 W Interstate 40, Amarillo, TX 79109
- Phone
- (806) 463-3200
- Enumerated
- Oct 18, 2025
- Record last updated
- Apr 4, 2026
- Fax
- (806) 463-3179
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,825 in Texas → Look up another NPI →
Verify Cassandra Markham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 833761Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Cassandra Markham among 4,825 nurse practitioner records in Texas
Cassandra Markham is one of 4,825 nurse practitioner records with a practice address in Texas. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2025, is newer than 92% of them.
- NPI issued2025 · 92% of these records are older, 3% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 54% of these records are
- Record last updated2026 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
75 nurse practitioner records list a practice address in Amarillo
They are 75 of the 3,934 NPPES records with a practice address in Amarillo, and 4,825 nurse practitioner records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4,825 in Texas → Every provider in Amarillo → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Courtni Andrus, N.P.Amarillo, TX 791091982903894
- Trina Caldwell, APRNAmarillo, TX 791091902813462
- Amber Roth, APRNAmarillo, TX 791091386067593
- Belynda Yarber, FNP-CAmarillo, TX 791091477090702
- Kristin Kuhlmann, FNPAmarillo, TX 791101679553911
- Brandi Lehning, CNMAmarillo, TX 791071063863314
- Angela Muniz, MSN-FNPAmarillo, TX 791071952896995
- Blanca Rangel, APRNAmarillo, TX 791071043766272
Common questions
What is Cassandra Markham's NPI number?
Cassandra Markham's National Provider Identifier (NPI) is 1679440325, issued on Oct 18, 2025. An NPI identifies a provider in billing; it is not a license.
Where is Cassandra Markham located?
The NPPES record lists a practice address at 2483 W Interstate 40, Amarillo, TX, 79109. Phone: (806) 463-3200. Providers update this record themselves, so call before visiting.
How can I verify Cassandra Markham's license?
NPPES lists Texas license number 833761, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.