Ahilan Arulanandan, MD
Gastroenterology Physician · Whittier, CA
Ahilan Arulanandan, MD is a gastroenterology physician with a practice address in Whittier, California, and NPI 1992148266, issued on Apr 16, 2013. Check the license (California A132459, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ahilan Arulanandan
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A132459 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12291 Washington Blvd Ste 201, Whittier, CA 90606
- Phone
- (562) 698-0306
- Enumerated
- Apr 16, 2013
- Record last updated
- Dec 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20191118003275); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 12291 Washington Blvd Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susette Grosveld, PA-CPhysician Assistant1912253576
- Laura Kheng, PA-CPhysician Assistant1912410358
- Alex Shindel, M.D.Gastroenterology Physician1497013759
- Bo Kyung Sul, NPNurse Practitioner1225809262
Verify Ahilan Arulanandan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A132459Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average gastroenterology physician in 2024
549 Medicare Part D claims for 378 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Gavilyte-C303 claims
- Omeprazole50 claims
- Pantoprazole Sodium50 claims
- Cholestyramine16 claims
- Budesonide Dr14 claims
- Famotidine13 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
- Permanente Medical Group IncAntioch, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ahilan Arulanandan among 2,140 gastroenterology physician records in California
Ahilan Arulanandan, MD is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 80% of them.
- NPI issued2013 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2013 · median 2002 among the 1,538 with a school on file
- Record last updated2021 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Whittier → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ashwin Ashok, M.D.Whittier, CA 906061134311236
- Robert Mecum, M.D.Whittier, CA 906061114945680
- Alex Shindel, M.D.Whittier, CA 906061497013759
- Amit Raina, MDWhittier, CA 906051316138142
- John Lah, MDWhittier, CA 906031437221272
- Renee Palta, D.O.Whittier, CA 906031497910251
- Neal Shindel, M.D.Whittier, CA 906031174612113
- Preeya Goyal, M.D.Whittier, CA 906021851781645
Common questions
What is Ahilan Arulanandan, MD's NPI number?
Ahilan Arulanandan, MD's National Provider Identifier (NPI) is 1992148266, issued on Apr 16, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Ahilan Arulanandan, MD located?
The NPPES record lists a practice address at 12291 Washington Blvd Ste 201, Whittier, CA, 90606. Phone: (562) 698-0306. Providers update this record themselves, so call before visiting.
How can I verify Ahilan Arulanandan, MD's license?
NPPES lists California license number A132459, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ahilan Arulanandan, MD prescribe under Medicare Part D?
In 2024, Ahilan Arulanandan, MD had 549 Medicare Part D claims for 378 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.