Ellie Ying Chen, MD
Gastroenterology Physician · Torrance, CA
Ellie Ying Chen, MD is a gastroenterology physician with a practice address in Torrance, California, and NPI 1417485350, issued on May 23, 2017. Check the license (California A170316, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ellie Ying Chen
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A170316 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2780 Skypark Dr Ste 125, Torrance, CA 90505
- Phone
- (310) 530-8013
- Enumerated
- May 23, 2017
- Record last updated
- Aug 31, 2023
- Medicare enrollment
- Enrolled (PECOS I20230727000532); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 2780 Skypark Dr Ste 125
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nimah AtherGastroenterology Physician1720422736
- Sonya DasharathyGastroenterology Physician1730566738
- Jennifer Kolb, MDGastroenterology Physician1043637234
- Jeanmarie McNeely, NURSE PRACTITIONERAcute Care Nurse Practitioner1144769027
- Melissa Munsell, M.D.Gastroenterology Physician1134276272
- Didi Mwengela, M.D.Gastroenterology Physician1033479795
Verify Ellie Ying Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A170316Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average gastroenterology physician in 2024
235 Medicare Part D claims for 115 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole68 claims
- Sod Sulf-Potass Sulf-Mag Sulf53 claims
- Pantoprazole Sodium23 claims
- Gavilyte-G12 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.
Industry payments in 2024: $152.59
2 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- The Regents OF The University OF CaliforniaLos Angeles, CA
- Venice Family ClinicSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellie Ying Chen among 2,140 gastroenterology physician records in California
Ellie Ying Chen, 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 2017, is newer than 91% of them.
- NPI issued2017 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2017 · median 2002 among the 1,538 with a school on file
- Record last updated2023 · 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 Torrance → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Susanna Chan, M.D.Torrance, CA 905051497794283
- David Chung, MDTorrance, CA 905051851362974
- Karl Fukunaga, MDTorrance, CA 905051487644613
- Thai Ha, MDTorrance, CA 905051174512172
- Kenneth Holt, MDTorrance, CA 905051932198108
- Tonny Lee, M.D.Torrance, CA 905051639118748
- Masaharu Osato, M.D.Torrance, CA 905051265470280
- Norman Panitch, MDTorrance, CA 905051306881487
Common questions
What is Ellie Ying Chen, MD's NPI number?
Ellie Ying Chen, MD's National Provider Identifier (NPI) is 1417485350, issued on May 23, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Ellie Ying Chen, MD located?
The NPPES record lists a practice address at 2780 Skypark Dr Ste 125, Torrance, CA, 90505. Phone: (310) 530-8013. Providers update this record themselves, so call before visiting.
How can I verify Ellie Ying Chen, MD's license?
NPPES lists California license number A170316, 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 Ellie Ying Chen, MD prescribe under Medicare Part D?
In 2024, Ellie Ying Chen, MD had 235 Medicare Part D claims for 115 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.