Kathryn Ruth Shirley, FNP
Family Nurse Practitioner · Austin, TX
Kathryn Ruth Shirley, FNP is a family nurse practitioner with a practice address in Austin, Texas, and NPI 1639500465, issued on Dec 4, 2013. Check the license (Texas AP124445, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathryn Ruth Shirley
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- AP124445 TX
530719 TX
Self-reported in NPPES; status is on the state search - Practice location
- 12221 Renfert Way Ste 300, Austin, TX 78758
- Phone
- (512) 873-8900
- Enumerated
- Dec 4, 2013
- Record last updated
- Jun 5, 2024
- Fax
- (512) 873-8913
- Medicaid IDs
- 332504502 TX
332504501 TX - Medicare enrollment
- Enrolled (PECOS I20140425001450); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 21,242 in Texas → Look up another NPI →
Also registered at 12221 Renfert Way Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Miguel Albino, MDMedical Oncology Physician1205060746
- Cobby Caputo, RNRegistered Nurse1932033131
- Laura Davis, P.A.Surgical Physician Assistant1780691063
- Helen Eshed, MDGynecologic Oncology Physician1215195516
- Larisa Gallo, PA-CPhysician Assistant1013256833
- Allison Gorrebeeck, MDHematology & Oncology Physician1467548628
Verify Kathryn Ruth Shirley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license AP124445Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average family nurse practitioner in 2024
324 Medicare Part D claims for 134 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Anastrozole32 claims
- Hydroxyurea31 claims
- Eliquis26 claims
- Acyclovir25 claims
- Xarelto24 claims
- Ondansetron Odt11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 83.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,098.25
41 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Texas Oncology PAAustin, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathryn Ruth Shirley among 21,242 family nurse practitioner records in Texas
Kathryn Ruth Shirley, FNP is one of 21,242 family nurse practitioner records with a practice address in Texas. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 19% of them.
- NPI issued2013 · 19% of these records are older, 78% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2013 · median 2018 among the 11,286 with a school on file
- Record last updated2024 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
876 family nurse practitioner records list a practice address in Austin
They are 876 of the 26,585 NPPES records with a practice address in Austin, and 21,242 family nurse practitioner records in Texas.
All 21,242 in Texas → Every provider in Austin → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Howard Baade, FNPAustin, TX 787581548471386
- Ginger Bane, RN, MSN, FNP-CAustin, TX 787581801076948
- Natalie Carreras, CNM, FNP-BCAustin, TX 787581235386814
- Linda Cook, NPAustin, TX 787581073560991
- Nancy Dasso, FNPAustin, TX 787581245287150
- Katherine Davidson, FNPAustin, TX 787581811210503
- Shawn Dowe, WHNP-BC, FNP-CAustin, TX 787581811967417
- Julie Isaac, NPAustin, TX 787581104152776
Common questions
What is Kathryn Ruth Shirley, FNP's NPI number?
Kathryn Ruth Shirley, FNP's National Provider Identifier (NPI) is 1639500465, issued on Dec 4, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn Ruth Shirley, FNP located?
The NPPES record lists a practice address at 12221 Renfert Way Ste 300, Austin, TX, 78758. Phone: (512) 873-8900. Providers update this record themselves, so call before visiting.
How can I verify Kathryn Ruth Shirley, FNP's license?
NPPES lists Texas license number AP124445, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Kathryn Ruth Shirley, FNP prescribe under Medicare Part D?
In 2024, Kathryn Ruth Shirley, FNP had 324 Medicare Part D claims for 134 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Kathryn Ruth Shirley, FNP's MIPS final score?
The 2023 MIPS final score is 83.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.