William Essilfie, MD
Gastroenterology Physician · Gardena, CA
William Essilfie, MD is a gastroenterology physician with a practice address in Gardena, California, and NPI 1588744627, issued on Oct 16, 2006. Check the license (California A46137, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Essilfie
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A46137 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1141 W Redondo Bch Blvd, Gardena, CA 90247
- Phone
- (310) 715-6100
- Enumerated
- Oct 16, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (310) 715-6832
- Medicaid ID
- 00A461371 CA
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Verify William Essilfie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A46137Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average gastroenterology physician in 2024
32 Medicare Part D claims, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Soliqua 100-3313 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.
William Essilfie among 2,140 gastroenterology physician records in California
William Essilfie, 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2007 · 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 Gardena → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Mohan Bhasker, M.D.Gardena, CA 902471356426241
- Rajeev Attam, MDDowney, CA 902421184694309
- Terence Chiu, MDDowney, CA 902421427083229
- Gareth Dulai, MDDowney, CA 902421164457883
- Michelle Vu, M.D.Downey, CA 902421164715439
- Steven Weiss, MDDowney, CA 902421457569162
- Gaurang Chaurushia, MDDowney, CA 902411538126131
- Kevin Dholaria, M.D.Downey, CA 902411629343736
Common questions
What is William Essilfie, MD's NPI number?
William Essilfie, MD's National Provider Identifier (NPI) is 1588744627, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Essilfie, MD located?
The NPPES record lists a practice address at 1141 W Redondo Bch Blvd, Gardena, CA, 90247. Phone: (310) 715-6100. Providers update this record themselves, so call before visiting.
How can I verify William Essilfie, MD's license?
NPPES lists California license number A46137, 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 William Essilfie, MD prescribe under Medicare Part D?
In 2024, William Essilfie, MD had 32 Medicare Part D claims; 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.