Katherine Graap, MSN, APRN, AGPCNP
NPI 1366208894 · Gerontology Nurse Practitioner · Houston, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Graap, MSN, APRN, AGPCNP is a Gerontology Nurse Practitioner provider in Houston, TX (NPI 1366208894).
Provider details
- NPI number
- 1366208894
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, APRN, AGPCNP
- Sex
- Female
- Sole proprietor
- No
- License
- 1144558 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
2 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
245 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 163 | $56 |
| Biopsy and Aspiration of Bone Marrow Sample for Diagnosis38222 | 53 | $64 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 29 | $29 |
Typical Medicare-allowed amounts for these services range $29–$64 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Valacyclovir Hclbrand: Valacyclovir | 67 | 25 |
| Decitabine/Cedazuridinebrand: Inqovi | 33 | — |
| Levofloxacin | 32 | 16 |
| Ruxolitinib Phosphatebrand: Jakafi | 20 | — |
| Voriconazole | 19 | — |
| Allopurinol | 17 | — |
| Bosutinibbrand: Bosulif | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,441 across 53 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-02-22
- Last updated
- 2024-02-22
- Certified
- 2024-02-22
Frequently asked questions
- What is Katherine Graap's NPI number?
- Katherine Graap's National Provider Identifier (NPI) is 1366208894, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Graap's specialty?
- Katherine Graap is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Graap located?
- Katherine Graap's practice location on file with NPPES is 1515 Holcombe Blvd, Houston, TX 77030-4000.
- What is Katherine Graap's phone number?
- The practice phone number listed in the NPPES registry for Katherine Graap is (713) 792-6161.
- Does Katherine Graap accept Medicare?
- Katherine Graap is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Graap's NPI active?
- Yes — Katherine Graap's NPI (1366208894) is active in the NPPES registry as of the last update on 2024-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.