Katherine Elizabeth Graap, MSN, APRN, AGPCNP
Gerontology Nurse Practitioner · Houston, TX
Katherine Elizabeth Graap, MSN, APRN, AGPCNP is a gerontology nurse practitioner with a practice address in Houston, Texas, and NPI 1366208894, issued on Feb 22, 2024. Check the license (Texas 1144558, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Elizabeth Graap
- Credential
- MSN, APRN, AGPCNP
- Primary taxonomy
- Gerontology Nurse Practitioner 363LG0600X
- License number
- 1144558 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1515 Holcombe Blvd, Houston, TX 77030
- Phone
- (713) 792-6161
- Enumerated
- Feb 22, 2024
- Record last updated
- Feb 22, 2024
- Medicare enrollment
- Enrolled (PECOS I20240313002141); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gerontology nurse practitioner records → All 954 in Texas → Look up another NPI →
Also registered at 1515 Holcombe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Elizabeth Graap in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 1144558Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average gerontology nurse practitioner in 2024
401 Medicare Part D claims for 90 beneficiaries, against an average of 1,369 among the 6,165 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Valacyclovir67 claims
- Inqovi33 claims
- Levofloxacin32 claims
- Jakafi20 claims
- Voriconazole19 claims
- Allopurinol17 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.
Industry payments in 2024: $2,440.87
53 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 3,903 providers of this specialty with any payment received $742.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Physicians Referral ServiceHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Elizabeth Graap among 954 gerontology nurse practitioner records in Texas
Katherine Elizabeth Graap, MSN, APRN, AGPCNP is one of 954 gerontology nurse practitioner records with a practice address in Texas. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 86% of them.
- NPI issued2024 · 86% of these records are older, 8% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2022 · median 2019 among the 577 with a school on file
- Record last updated2024 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LG0600X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gerontology Nurse Practitioner providers in Texas
There are 954 gerontology nurse practitioner records in Texas.
All 954 in Texas → Every provider in Houston → Gerontology Nurse Practitioner nationwide →
The 8 gerontology nurse practitioner records with the nearest ZIP codes
- Cynthia Abarado, RN, GNPHouston, TX 770301851471049
- Maxine Burnett, RN, ANP, GNPHouston, TX 770301326136664
- Debbie Colvin, GNPHouston, TX 770301891809687
- Oliva Delossantos, ANP/GNPHouston, TX 770301255372173
- Susan Gorman, GNPHouston, TX 770301588844641
- Matthelon Green, NPHouston, TX 770301346331873
- Mary Hernandez, RN, CNS, GNPHouston, TX 770301548358724
- Robert Martin, GNP-BCHouston, TX 770301609011634
Common questions
What is Katherine Elizabeth Graap, MSN, APRN, AGPCNP's NPI number?
Katherine Elizabeth Graap, MSN, APRN, AGPCNP's National Provider Identifier (NPI) is 1366208894, issued on Feb 22, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Elizabeth Graap, MSN, APRN, AGPCNP located?
The NPPES record lists a practice address at 1515 Holcombe Blvd, Houston, TX, 77030. Phone: (713) 792-6161. Providers update this record themselves, so call before visiting.
How can I verify Katherine Elizabeth Graap, MSN, APRN, AGPCNP's license?
NPPES lists Texas license number 1144558, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Elizabeth Graap, MSN, APRN, AGPCNP prescribe under Medicare Part D?
In 2024, Katherine Elizabeth Graap, MSN, APRN, AGPCNP had 401 Medicare Part D claims for 90 beneficiaries; the average among gerontology nurse practitioner prescribers was 1,369. 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.
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.