NPPES file of Aug 9, 2026

Libby Ann John, AGNP

Adult Health Nurse Practitioner · Houston, TX

Libby Ann John, AGNP is an adult health nurse practitioner with a practice address in Houston, Texas, and NPI 1598149932, issued on Jul 15, 2015. Check the license (Texas AP128178, 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
1598149932
Name
Libby Ann John
Credential
AGNP
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License numbers
AP128178 TX
81691 KS
209.027660 IL
70324 NM
Self-reported in NPPES; status is on the state search
Practice location
6603 Rusk Landing CT, Houston, TX 77049
Phone
(832) 605-8352
Enumerated
Jul 15, 2015
Record last updated
Jan 9, 2024
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Libby Ann John 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 AP128178
    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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99% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024

14 Medicare Part D claims, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D.

  1. Libby John14
  2. Specialty average1,280

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.

Libby Ann John among 1,159 adult health nurse practitioner records in Texas

Libby Ann John, AGNP is one of 1,159 adult health nurse practitioner records with a practice address in Texas. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 54% of them.

  • NPI issued2015 · 54% of these records are older, 41% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileNo · 49% of these records are
  • Record last updated2024 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Adult Health Nurse Practitioner providers in Texas

There are 1,159 adult health nurse practitioner records in Texas.

The 8 adult health nurse practitioner records with the nearest ZIP codes

  1. Nabulangi Kasumba Muhangi, NPHouston, TX 770491497542427
  2. Kudy AdelakunHouston, TX 770541316370919
  3. Elizabeth Brierre, RN, MSN, ANP-CHouston, TX 770541861821324
  4. Jennifer DesmondHouston, TX 770541366963795
  5. Angelica Guzman, NPHouston, TX 770541114156585
  6. Sunitha Hari, NPHouston, TX 770541952803959
  7. Brandy Khodr, RN, MSN, AGACNP-BCHouston, TX 770541144730201
  8. Stephen Mbola, ANPHouston, TX 770541134433113

Common questions

What is Libby Ann John, AGNP's NPI number?

Libby Ann John, AGNP's National Provider Identifier (NPI) is 1598149932, issued on Jul 15, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Libby Ann John, AGNP located?

The NPPES record lists a practice address at 6603 Rusk Landing CT, Houston, TX, 77049. Phone: (832) 605-8352. Providers update this record themselves, so call before visiting.

How can I verify Libby Ann John, AGNP's license?

NPPES lists Texas license number AP128178, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Libby Ann John, AGNP prescribe under Medicare Part D?

In 2024, Libby Ann John, AGNP had 14 Medicare Part D claims; the average among adult health nurse practitioner prescribers was 1,280. 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.