Dennis ChanM. D.
Gastroenterology·Monterey Park, CA
Dennis Chan, M. D. is a Gastroenterology provider in Monterey Park, CA affiliated with 2 ambulatory surgery centers in CA, as of July 2026.
- NPI1053343434
- Registered2006
- Centers2
- StateCA
- Class of1980
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Dennis Chan at a glance
- Provider
- Dennis Chan
- Credential
- M. D.
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Monterey Park, CA
- Medical school graduation
- 1980
- NPI registered
- 2006
- NPI
- 1053343434
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Dennis Chan practice?
Dennis Chan, M. D. is based in Monterey Park, CA and is affiliated with 2 ambulatory surgery centers: Gastroenterology Diagnostic Center Medical Group in Monterey Park, CA and Advanced Diagnostic And Surgical Center INC in Alhambra, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Dennis Chan's NPI number?
Dennis Chan's National Provider Identifier (NPI) is 1053343434, registered in 2006. Specialty on record: Gastroenterology; credential M. D.
How many Gastroenterology providers in California work at ambulatory surgery centers?
547 Gastroenterology surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Dennis Chan among them. The California Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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