NPPES file of Aug 9, 2026

Rebecca R. Gilliam, AGACNP-BC

Gerontology Nurse Practitioner · San Antonio, TX

Rebecca R. Gilliam, AGACNP-BC is a gerontology nurse practitioner with a practice address in San Antonio, Texas, and NPI 1255735999, issued on Oct 9, 2014. Check the license (Texas AP126539, 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
1255735999
Name
Rebecca R. Gilliam
Credential
AGACNP-BC
Primary taxonomy
Gerontology Nurse Practitioner 363LG0600X
License number
AP126539 TX
Self-reported in NPPES; status is on the state search
Practice location
18707 Hardy Oak Blvd Ste 530, San Antonio, TX 78258
Phone
(210) 495-8280
Enumerated
Oct 9, 2014
Record last updated
Aug 19, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(210) 481-3116
Medicare enrollment
Enrolled (PECOS I20150107001821); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 18707 Hardy Oak Blvd Ste 530

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

  1. Megan CamachoAcute Care Nurse Practitioner1467163733
  2. Amanda Day, MSN, AGACNP-BC, CCRNAcute Care Nurse Practitioner1467099796
  3. Hector Diaz Rodriguez, M.D.Nephrology Physician1013221274
  4. David Mata, ANPAdult Health Nurse Practitioner1790129815
  5. Matthew Schaefer, D.O.Nephrology Physician1346205648

Verify Rebecca R. Gilliam 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 AP126539
    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
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76% fewer Medicare Part D claims than the average gerontology nurse practitioner in 2024

334 Medicare Part D claims for 43 beneficiaries, against an average of 1,369 among the 6,165 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.

  1. Rebecca Gilliam334
  2. Specialty average1,369

Most prescribed

  1. Furosemide23 claims
  2. Azithromycin20 claims
  3. Methylprednisolone17 claims
  4. Rosuvastatin Calcium17 claims
  5. Lantus Solostar16 claims
  6. Atorvastatin Calcium13 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.

Bills Medicare through one group practice

  1. Tapestry Telehealth PLLCDallas, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Rebecca R. Gilliam among 954 gerontology nurse practitioner records in Texas

Rebecca R. Gilliam, AGACNP-BC 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 2014, is newer than 21% of them.

  • NPI issued2014 · 21% of these records are older, 77% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2014 · median 2019 among the 577 with a school on file
  • Record last updated2021 · 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.

The 8 gerontology nurse practitioner records with the nearest ZIP codes

  1. Ashlee Dugger, NPSan Antonio, TX 782581215397898
  2. Stephen Gonzales, MSN,APRN,AGACNP-BCSan Antonio, TX 782581558135566
  3. Aaron Grooms, AGPCNPSan Antonio, TX 782581619764578
  4. Christina Bricout, APRNSan Antonio, TX 782571508485970
  5. Teresa Hall, NPSan Antonio, TX 782571861662132
  6. Michelle Mourre, CNPSan Antonio, TX 782571295331858
  7. Adrianna Quintanilla, A-GNP-CSan Antonio, TX 782571265131510
  8. Vanessa Villarreal, A-GNP-CSan Antonio, TX 782541194430819

Common questions

What is Rebecca R. Gilliam, AGACNP-BC's NPI number?

Rebecca R. Gilliam, AGACNP-BC's National Provider Identifier (NPI) is 1255735999, issued on Oct 9, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Rebecca R. Gilliam, AGACNP-BC located?

The NPPES record lists a practice address at 18707 Hardy Oak Blvd Ste 530, San Antonio, TX, 78258. Phone: (210) 495-8280. Providers update this record themselves, so call before visiting.

How can I verify Rebecca R. Gilliam, AGACNP-BC's license?

NPPES lists Texas license number AP126539, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Rebecca R. Gilliam, AGACNP-BC prescribe under Medicare Part D?

In 2024, Rebecca R. Gilliam, AGACNP-BC had 334 Medicare Part D claims for 43 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.