Johanna ChanM.D.
Johanna Chan, M.D. is a Gastroenterology provider in Houston, TX affiliated with 5 ambulatory surgery centers across TX and FL, as of July 2026.
- NPI1679716096
- Registered2009
- Centers5
- StatesTX · FL
- Class of2009
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s: 4 in TX, 1 in FL. Affiliations change; verify independently.
- Memorial Hermann Texas International Endoscopy Center Dba Texas International Endoscopy CenterHouston, TX · Gastroenterology · 30 on panelView center →
- Memorial Hermann Surgery Center Kirby LLCHouston, TX · Gastroenterology, Ophthalmology, Pain management · 30 on panelView center →
- Mayo Clinic Jacksonville Dba Mayo Clinic Jacksonville ASC For G IJacksonville, FL · Gastroenterology · 29 on panelView center →
- Memorial Hermann Surgery Center Texas Medical CenterHouston, TX · ENT, Gastroenterology, Ophthalmology, Orthopedics, Pain management · 30 on panelView center →
- Medical Center Endoscopy LLCHouston, TX · Gastroenterology · 30 on panelView center →
Education
Education on record as of August 2026.
Johanna Chan at a glance
- Provider
- Johanna Chan
- Credential
- M.D.
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Houston, TX
- Medical school
- University of Texas Southwestern Medical School at Dallas
- Graduated
- 2009
- NPI registered
- 2009
- NPI
- 1679716096
- 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 Johanna Chan practice?
Johanna Chan, M.D. is based in Houston, TX and is affiliated with 5 ambulatory surgery centers: Memorial Hermann Texas International Endoscopy Center Dba Texas International Endoscopy Center in Houston, TX, Memorial Hermann Surgery Center Kirby LLC in Houston, TX, Mayo Clinic Jacksonville Dba Mayo Clinic Jacksonville ASC For G I in Jacksonville, FL, Memorial Hermann Surgery Center Texas Medical Center in Houston, TX, and Medical Center Endoscopy LLC in Houston, TX. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Johanna Chan's NPI number?
Johanna Chan's National Provider Identifier (NPI) is 1679716096, registered in 2009. Specialty on record: Gastroenterology; credential M.D.
Where did Johanna Chan go to medical school?
Johanna Chan, M.D. attended University of Texas Southwestern Medical School at Dallas, graduating in 2009.
How many Gastroenterology providers in Texas work at ambulatory surgery centers?
312 Gastroenterology surgeons and proceduralists in Texas are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Johanna Chan among them. The Texas Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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