Kathryn E. Stewart, PA-C
Medical Physician Assistant · Hesperia, CA
Kathryn E. Stewart, PA-C is a medical physician assistant with a practice address in Hesperia, California, and NPI 1194000778, issued on Oct 14, 2011. Check the license (California 21897, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathryn E. Stewart
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 21897 CA
Self-reported in NPPES; status is on the state search - Practice location
- 17095 Main St, Hesperia, CA 92345
- Phone
- (760) 956-4133
- Enumerated
- Oct 14, 2011
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (760) 956-9297
- Medicare enrollment
- Enrolled (PECOS I20130514000345); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 17095 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Christiansen, PTPhysical Therapist1750543427
- Ziad El-Hajjaoui, M.D.Internal Medicine Physician1376543785
- Asefeh Faraz, NPNurse Practitioner1447402516
- Martha Garcia, PA-CPhysician Assistant1487604427
- Raul Gener, M.D.Family Medicine Physician1558389668
- Artin Gevorkian, MDFamily Medicine Physician1578530291
Verify Kathryn E. Stewart in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 21897Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average medical physician assistant in 2024
376 Medicare Part D claims for 236 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Prednisone74 claims
- Azithromycin44 claims
- Nabumetone35 claims
- Cephalexin27 claims
- Albuterol Sulfate Hfa14 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
- Southern California Permanente Medical GroupRiverside, CA
- Symbiosis IncRedlands, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathryn E. Stewart among 3,376 medical physician assistant records in California
Kathryn E. Stewart, PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 46% of them.
- NPI issued2011 · 46% of these records are older, 49% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2011 · median 2012 among the 1,347 with a school on file
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Hesperia → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Jarnice Johnson, PA-CHesperia, CA 923451457658171
- Rodrick Meraz, PAHesperia, CA 923451235148289
- Joseph Tate, P.A.C.Hesperia, CA 923451538423447
- Redentor Bacani, PA-CHighland, CA 923461487725693
- David Emery, P.A.Highland, CA 923461780602318
- Jean Luck, P.A.Green Valley Lake, CA 923411740322619
- Brandyn BeloteLoma Linda, CA 923501477233765
- Angela Hanson, PA-CLoma Linda, CA 923501114591658
Common questions
What is Kathryn E. Stewart, PA-C's NPI number?
Kathryn E. Stewart, PA-C's National Provider Identifier (NPI) is 1194000778, issued on Oct 14, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn E. Stewart, PA-C located?
The NPPES record lists a practice address at 17095 Main St, Hesperia, CA, 92345. Phone: (760) 956-4133. Providers update this record themselves, so call before visiting.
How can I verify Kathryn E. Stewart, PA-C's license?
NPPES lists California license number 21897, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Kathryn E. Stewart, PA-C prescribe under Medicare Part D?
In 2024, Kathryn E. Stewart, PA-C had 376 Medicare Part D claims for 236 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.