Katharina Abernethy, PA, PTA
Physician Assistant · Windsor, CA
Katharina Abernethy, PA, PTA is a physician assistant with a practice address in Windsor, California, and NPI 1518039536, issued on Nov 14, 2006. Check the license (California 51580, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katharina Abernethy
- Credential
- PA, PTA
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 51580 CA
AT 8069 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6580 Hembree LN Ste 270, Windsor, CA 95492
- Phone
- (707) 838-2044
- Enumerated
- Nov 14, 2006
- Record last updated
- May 26, 2022
- Medicare enrollment
- Enrolled (PECOS I20141201001490); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 6580 Hembree LN Ste 270
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bryan Eberle, P.A.Physician Assistant1356638332
- Elizabeth Flower, M.D.Family Medicine Physician1538173141
- Tysen Norton, PAPhysician Assistant1275869497
Verify Katharina Abernethy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 51580Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% more Medicare Part D claims than the average physician assistant in 2024
1,004 Medicare Part D claims for 750 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Gavilyte-C590 claims
- Pantoprazole Sodium95 claims
- Lubiprostone68 claims
- Sucralfate38 claims
- Gavilyte-G37 claims
- Buspirone Hcl20 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 2 group practices
- Permanente Medical Group IncStockton, CA
- Providence Medical FoundationAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katharina Abernethy among 14,451 physician assistant records in California
Katharina Abernethy, PA, PTA is one of 14,451 physician assistant records with a practice address in California. 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 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2011 · median 2018 among the 7,214 with a school on file
- Record last updated2022 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 physician assistant records list a practice address in Windsor
They are 5 of the 184 NPPES records with a practice address in Windsor, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Windsor → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Bryan Eberle, P.A.Windsor, CA 954921356638332
- Tysen Norton, PAWindsor, CA 954921275869497
- Megan Poulsen, PAWindsor, CA 954921316668551
- Emily Venditti, PA-CWindsor, CA 954921992354526
- Emily Hauser, PAWillits, CA 954901750055562
- Peter Aronson, PA-CEureka, CA 955011891891479
- John Brimlow, PACEureka, CA 955011124000922
- Ann Coots, PA-CEureka, CA 955011831363977
Common questions
What is Katharina Abernethy, PA, PTA's NPI number?
Katharina Abernethy, PA, PTA's National Provider Identifier (NPI) is 1518039536, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katharina Abernethy, PA, PTA located?
The NPPES record lists a practice address at 6580 Hembree LN Ste 270, Windsor, CA, 95492. Phone: (707) 838-2044. Providers update this record themselves, so call before visiting.
How can I verify Katharina Abernethy, PA, PTA's license?
NPPES lists California license number 51580, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Katharina Abernethy, PA, PTA prescribe under Medicare Part D?
In 2024, Katharina Abernethy, PA, PTA had 1,004 Medicare Part D claims for 750 beneficiaries; the average among physician assistant prescribers was 830. 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.