Billie Nanette Corwin, FNP-C
Family Nurse Practitioner · San Marcos, TX
Billie Nanette Corwin, FNP-C is a family nurse practitioner with a practice address in San Marcos, Texas, and NPI 1881446631, issued on Apr 4, 2024. Check the license (Texas 1156416, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Billie Nanette Corwin
- Credential
- FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 1156416 TX
Self-reported in NPPES; status is on the state search - Practice location
- 151 Stagecoach Trl Ste 105, San Marcos, TX 78666
- Phone
- (737) 213-1271
- Enumerated
- Apr 4, 2024
- Record last updated
- May 14, 2026
- Medicare enrollment
- Enrolled (PECOS I20240508000865); may accept 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 →
Verify Billie Nanette Corwin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 1156416Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average family nurse practitioner in 2024
361 Medicare Part D claims for 26 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Potassium Chloride26 claims
- Donepezil Hcl22 claims
- Gabapentin16 claims
- Levothyroxine Sodium14 claims
- Amlodipine Besylate13 claims
- Ozempic13 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
- Wiseman Family Practice PLLCAustin, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Billie Nanette Corwin among 21,242 family nurse practitioner records in Texas
Billie Nanette Corwin, FNP-C 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 2024, is newer than 86% of them.
- NPI issued2024 · 86% of these records are older, 8% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2023 · median 2018 among the 11,286 with a school on file
- Record last updated2026 · 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).
55 family nurse practitioner records list a practice address in San Marcos
They are 55 of the 1,003 NPPES records with a practice address in San Marcos, and 21,242 family nurse practitioner records in Texas.
All 21,242 in Texas → Every provider in San Marcos → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Mary Andres, FNPSan Marcos, TX 786661902106966
- Patricia Ballentine, R.N., MSN, FNP-CSan Marcos, TX 786661770688210
- Dana Bourke, NPSan Marcos, TX 786661356591432
- Ashley Ferguson, RN, FNP-CSan Marcos, TX 786661093045692
- Carol Garner, MSN,CS,FNPSan Marcos, TX 786661295734036
- Lydia Glisan, FNPSan Marcos, TX 786661750533543
- Laura Greek, FNPSan Marcos, TX 786661871754804
- Janan Hall, FNPSan Marcos, TX 786661992903777
Common questions
What is Billie Nanette Corwin, FNP-C's NPI number?
Billie Nanette Corwin, FNP-C's National Provider Identifier (NPI) is 1881446631, issued on Apr 4, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Billie Nanette Corwin, FNP-C located?
The NPPES record lists a practice address at 151 Stagecoach Trl Ste 105, San Marcos, TX, 78666. Phone: (737) 213-1271. Providers update this record themselves, so call before visiting.
How can I verify Billie Nanette Corwin, FNP-C's license?
NPPES lists Texas license number 1156416, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Billie Nanette Corwin, FNP-C prescribe under Medicare Part D?
In 2024, Billie Nanette Corwin, FNP-C had 361 Medicare Part D claims for 26 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.