NPPES file of Aug 9, 2026

Ashika Shankar Atienza, PA-C

Physician Assistant · Santa Clara, CA

Ashika Shankar Atienza, PA-C is a physician assistant with a practice address in Santa Clara, California, and NPI 1942455464, issued on Nov 25, 2008. Check the license (California 20081, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1942455464
Name
Ashika Shankar Atienza
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
20081 CA
Self-reported in NPPES; status is on the state search
Practice location
710 Lawrence Expy, Santa Clara, CA 95051
Phone
(408) 851-1827
Enumerated
Nov 25, 2008
Record last updated
Feb 11, 2022
Medicare enrollment
Enrolled (PECOS I20120430000680); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 710 Lawrence Expy

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Iype Abraham, M.D.Internal Medicine Physician1578737243
  2. Oren Abramson, MDPediatric Gastroenterology Physician1265511307
  3. Jamie Adiarte, PA-CPhysician Assistant1073824413
  4. Sarah Adut, PHDClinical Psychologist1609484831
  5. Najla Ahmadzia, M.D.Student in an Organized Health Care Education/Training Program1568692580
  6. Farhana Ahmed, MDHospitalist Physician1215110002

Verify Ashika Shankar Atienza in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 20081
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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67% fewer Medicare Part D claims than the average physician assistant in 2024

273 Medicare Part D claims for 130 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 100 claims were for opioids.

  1. Ashika Atienza273
  2. Specialty average830

Most prescribed

  1. Oxycodone Hcl83 claims
  2. Celecoxib69 claims
  3. Ondansetron Odt57 claims
  4. Hydrocodone-Acetaminophen11 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

  1. Permanente Medical Group IncSanta Clara, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ashika Shankar Atienza among 14,451 physician assistant records in California

Ashika Shankar Atienza, PA-C 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 2008, is newer than 22% of them.

  • NPI issued2008 · 22% of these records are older, 75% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2008 · 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).

Physician Assistant providers in California

There are 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Rose Abendroth, P.A-C PHDSanta Clara, CA 950511568471126
  2. Jamie Adiarte, PA-CSanta Clara, CA 950511073824413
  3. Cristina Akbari, PA-C FNPSanta Clara, CA 950511750439071
  4. Mike Baker, PA-CSanta Clara, CA 950511588729115
  5. Claire Ballard, PA-CSanta Clara, CA 950511326110693
  6. Racquel Cua, P.A.-CSanta Clara, CA 950511174533905
  7. Erin Dobler, PA-CSanta Clara, CA 950511558539700
  8. Walter Fulgham, PA-CSanta Clara, CA 950511447490842

Common questions

What is Ashika Shankar Atienza, PA-C's NPI number?

Ashika Shankar Atienza, PA-C's National Provider Identifier (NPI) is 1942455464, issued on Nov 25, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Ashika Shankar Atienza, PA-C located?

The NPPES record lists a practice address at 710 Lawrence Expy, Santa Clara, CA, 95051. Phone: (408) 851-1827. Providers update this record themselves, so call before visiting.

How can I verify Ashika Shankar Atienza, PA-C's license?

NPPES lists California license number 20081, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Ashika Shankar Atienza, PA-C prescribe under Medicare Part D?

In 2024, Ashika Shankar Atienza, PA-C had 273 Medicare Part D claims for 130 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.