NPPES file of Aug 9, 2026

Elizabeth Kathleen Graustein, FNP-BC

Family Nurse Practitioner · Port Isabel, TX

Elizabeth Kathleen Graustein, FNP-BC is a family nurse practitioner with a practice address in Port Isabel, Texas, and NPI 1982169264, issued on Jan 31, 2019. Check the license (Texas AP139865, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1982169264
Name
Elizabeth Kathleen Graustein
Credential
FNP-BC
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
AP139865 TX
Self-reported in NPPES; status is on the state search
Practice location
413 E Railroad Ave, Port Isabel, TX 78578
Phone
(956) 202-0111
Enumerated
Jan 31, 2019
Record last updated
Mar 11, 2026
Medicaid ID
395973601 TX
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 413 E Railroad Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Havannah Cascos, LPCProfessional Counselor1134987092
  2. Marsha Sargeant, PH.D.Psychologist1093123960

Verify Elizabeth Kathleen Graustein in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license AP139865    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Texas license search

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38% fewer Medicare Part D claims than the average family nurse practitioner in 2024

813 Medicare Part D claims for 267 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Elizabeth Graustein813
  2. Specialty average1,305

Most prescribed

  1. Levothyroxine Sodium34 claims
  2. Atorvastatin Calcium30 claims
  3. Lisinopril30 claims
  4. Amlodipine Besylate23 claims
  5. Gabapentin22 claims
  6. Azithromycin20 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

2 family nurse practitioner records list a practice address in Port Isabel

They are 2 of the 46 NPPES records with a practice address in Port Isabel, and 21,242 family nurse practitioner records in Texas.

All 2 in Port Isabel → All 21,242 in Texas → Every provider in Port Isabel →

Other family nurse practitioner records in Texas

  1. Ashley Aaron, FNPWaco, TX1053821504
  2. Christina Aaron, FNPTexarkana, TX1457787426
  3. Lori Aaron, FNP-CFrisco, TX1619387974
  4. Lauren Aase, FNPSheppard Afb, TX1578550299
  5. Olivia AbabioCypress, TX1588171995
  6. Lilian Abagwe, NPWylie, TX1396215620
  7. Vivian Abaidoo, NP-CHouston, TX1760071971
  8. Zuniley Aballe-Hernandez, FNP-CHouston, TX1952054066
  9. Jorge Abalo Redden, FNPKaty, TX1932991122
  10. Jennifer Abalos, FNPPlano, TX1841452984

Common questions

What is Elizabeth Kathleen Graustein, FNP-BC's NPI number?

Elizabeth Kathleen Graustein, FNP-BC's National Provider Identifier (NPI) is 1982169264, issued on Jan 31, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Elizabeth Kathleen Graustein, FNP-BC located?

The NPPES record lists a practice address at 413 E Railroad Ave, Port Isabel, TX, 78578. Phone: (956) 202-0111. Providers update this record themselves, so call before visiting.

How can I verify Elizabeth Kathleen Graustein, FNP-BC's license?

NPPES lists Texas license number AP139865, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Elizabeth Kathleen Graustein, FNP-BC prescribe under Medicare Part D?

In 2024, Elizabeth Kathleen Graustein, FNP-BC had 813 Medicare Part D claims for 267 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.