Mark Ashby, PA
Physician Assistant · Sherman Oaks, CA
Mark Ashby, PA is a physician assistant with a practice address in Sherman Oaks, California, and NPI 1093060386, issued on Jul 23, 2012. Check the license (California PA22159, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Ashby
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA22159 CA
Self-reported in NPPES; status is on the state search - Practice location
- 13547 Ventura Blvd Ste 282, Sherman Oaks, CA 91423
- Phone
- (818) 968-4242
- Enumerated
- Jul 23, 2012
- Record last updated
- Nov 4, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (818) 968-4242
- Medicare enrollment
- Enrolled (PECOS I20120906000175); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify Mark Ashby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA22159Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average physician assistant in 2024
393 Medicare Part D claims for 266 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 71 claims were for opioids.
Most prescribed
- Ibuprofen63 claims
- Hydrocodone-Acetaminophen39 claims
- Ondansetron Odt31 claims
- Sulfamethoxazole-Trimethoprim27 claims
- Acetaminophen-Codeine24 claims
- Cephalexin19 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
- CA Physician Assistant Cooperative Healthcare PCInglewood, CA
- Central Valley Emergency MedicinePorterville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Ashby among 14,451 physician assistant records in California
Mark Ashby, PA 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 2012, is newer than 33% of them.
- NPI issued2012 · 33% of these records are older, 65% 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 updated2016 · 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).
44 physician assistant records list a practice address in Sherman Oaks
They are 44 of the 2,691 NPPES records with a practice address in Sherman Oaks, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Sherman Oaks → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Ashley DonagheySherman Oaks, CA 914231548890395
- Nwankaego Nwandei, PA-CSherman Oaks, CA 914231760936801
- Yana Pechenik, PASherman Oaks, CA 914231457681389
- Maria Sabau, PHYSICIAN ASSISTANTSherman Oaks, CA 914231619481447
- Jacklyn Sarkissian, P.A-CSherman Oaks, CA 914231144689076
- Daphne Thomassini, PA-CSherman Oaks, CA 914231417357666
- Amal Arshad, PA-CSherman Oaks, CA 914111386511897
- Rachelle Bernardo, PA-CVan Nuys, CA 914111821237678
Common questions
What is Mark Ashby, PA's NPI number?
Mark Ashby, PA's National Provider Identifier (NPI) is 1093060386, issued on Jul 23, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mark Ashby, PA located?
The NPPES record lists a practice address at 13547 Ventura Blvd Ste 282, Sherman Oaks, CA, 91423. Phone: (818) 968-4242. Providers update this record themselves, so call before visiting.
How can I verify Mark Ashby, PA's license?
NPPES lists California license number PA22159, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Ashby, PA prescribe under Medicare Part D?
In 2024, Mark Ashby, PA had 393 Medicare Part D claims for 266 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.