David Willis, GNP
NPI 1689703134 · Gerontology Nurse Practitioner · Mckinney, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Willis, GNP is a Gerontology Nurse Practitioner provider in Mckinney, TX (NPI 1689703134).
Provider details
- NPI number
- 1689703134
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- GNP
- Sex
- Male
- Sole proprietor
- No
- License
- 556431 (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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
4,067 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 1,267 | $105 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 636 | $12 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 623 | $39 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, Each Additional 20 Minutes99458 | 553 | $32 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 365 | $51 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 115 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 206 | 72 |
| Amlodipine Besylate | 172 | 62 |
| Levothyroxine Sodium | 165 | 44 |
| Gabapentin | 157 | 64 |
| Omeprazole | 140 | 41 |
| Losartan Potassium | 138 | 51 |
| Furosemide | 137 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-02
- Last updated
- 2023-11-29
- Certified
- 2023-11-29
Frequently asked questions
- What is David Willis's NPI number?
- David Willis's National Provider Identifier (NPI) is 1689703134, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Willis's specialty?
- David Willis is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is David Willis located?
- David Willis's practice location on file with NPPES is 275 Holder Trl, Mckinney, TX 75071-4133.
- What is David Willis's phone number?
- The practice phone number listed in the NPPES registry for David Willis is (214) 491-4191.
- Does David Willis accept Medicare?
- David Willis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Willis's NPI active?
- Yes — David Willis's NPI (1689703134) is active in the NPPES registry as of the last update on 2023-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.