Rebecca Gilliam, AGACNP-BC
NPI 1255735999 · Gerontology Nurse Practitioner · San Antonio, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rebecca Gilliam, AGACNP-BC is a Gerontology Nurse Practitioner provider in San Antonio, TX (NPI 1255735999).
Provider details
- NPI number
- 1255735999
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- AGACNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- AP126539 (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
11 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
1,993 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 1,896 | $87 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 36 | $124 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, at Least 10 Minutes99307 | 35 | $33 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 26 | $60 |
Typical Medicare-allowed amounts for these services range $33–$124 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 23 | — |
| Azithromycin | 20 | 13 |
| Methylprednisolone | 17 | 16 |
| Rosuvastatin Calcium | 17 | — |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 16 | — |
| Atorvastatin Calcium | 13 | — |
| Potassium Chloride | 12 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-10-09
- Last updated
- 2021-08-19
- Certified
- 2021-08-19
Frequently asked questions
- What is Rebecca Gilliam's NPI number?
- Rebecca Gilliam's National Provider Identifier (NPI) is 1255735999, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rebecca Gilliam's specialty?
- Rebecca Gilliam is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Rebecca Gilliam located?
- Rebecca Gilliam's practice location on file with NPPES is 18707 Hardy Oak Blvd Ste 530, San Antonio, TX 78258-4791.
- What is Rebecca Gilliam's phone number?
- The practice phone number listed in the NPPES registry for Rebecca Gilliam is (210) 495-8280.
- Does Rebecca Gilliam accept Medicare?
- Rebecca Gilliam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rebecca Gilliam's NPI active?
- Yes — Rebecca Gilliam's NPI (1255735999) is active in the NPPES registry as of the last update on 2021-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.