Pediatric Gastroenterologists in California
Data updated monthly · Last refresh October 2026
268 Pediatric Gastroenterology providers practice in California, including 4 (1%) offering telehealth. The largest concentration is in Palo Alto. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
268providers
4telehealth
Palo Altotop city
Pediatric Gastroenterology by city in California
Choose a city to see providers there.
Where Pediatric Gastroenterologists in California practice
From CMS Medicare enrollment records covering 78 of the 268 providers listed here (29%). Providers who do not bill Medicare are not included in these figures.
Largest practice groups
| Group (as registered with Medicare) | Pediatric Gastroenterologists | All clinicians in group | Main city |
| Lpch Medical Group Div of Lucile | 17 | 332 | Palo Alto |
| Childrens Hospital Los Angeles Medical Group Inc. | 11 | 288 | Los Angeles |
| Rady Children's Hospital San Diego | 8 | 164 | San Diego |
| Childrens Hospital of Orange County | 6 | 70 | Orange |
| Faculty Physicians and Surgeons of Llusm | 4 | 1,313 | Loma Linda |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Pediatric Gastroenterologists affiliated |
| Children's Hosp of Los Angeles | Los Angeles | Nonprofit | Not rated | 4 |
| Memorialcare Long Beach Medical Center | Long Beach | Nonprofit | 2 of 5 | 3 |
| Ronald Reagan UCLA Medical Center | Los Angeles | Government | 4 of 5 | 2 |
| Cedars-Sinai Medical Center | Los Angeles | Nonprofit | 5 of 5 | 2 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Pediatric Gastroenterology providers in California
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Fadi Haddad, M.D.Antioch, CA · $3,355 in drug and device payments (2025) ·
(925) 350-8855 Dr. Glenn Duh, MDBellflower, CA · No drug or device payments recorded (2025) ·
(562) 461-3000 Dr. Prathiba Nanjundiah, MDBellflower, CA · No drug or device payments recorded (2025) ·
(562) 461-3000 Dr. Susan Edelstein, M.D.Beverly Hills, CA · $649 in drug and device payments (2025) ·
(310) 659-1300 Dr. Saied Dallalzadeh, M.D.Encino, CA · No drug or device payments recorded (2025) ·
(818) 986-0006 Dr. Bruce Grill, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Eric Henar, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Mun-wah Ng, M.D.Fontana, CA · No drug or device payments recorded (2025) ·
(909) 427-5000 Dr. Hongtao Wang, M.D., PH.D.Fresno, CA · $14,066 in drug and device payments (2025) ·
(559) 794-2168 Dr. Judy Davis, MDFresno, CA · No drug or device payments recorded (2025) ·
(559) 438-8400 Dr. Alauna Cheng, D.O.Loma Linda, CA · No drug or device payments recorded (2025) ·
(909) 558-4174 Dr. Babu Bangaru, M.D.Loma Linda, CA · $150 in drug and device payments (2025) ·
(909) 558-4773 Dr. Gautam NagendraLoma Linda, CA · $199 in drug and device payments (2025) ·
(909) 558-4773 Dr. Kalyan Ray Parashette, MBBSLoma Linda, CA · $742 in drug and device payments (2025) ·
(909) 558-4000 Dr. Khyati Mehta, MDLoma Linda, CA · $125 in drug and device payments (2025) ·
(909) 558-3904 Dr. Mallory Cohen, MDLoma Linda, CA · No drug or device payments recorded (2025) ·
(909) 558-4773 Dr. Manoj Shah, MDLoma Linda, CA · $445 in drug and device payments (2025) ·
(909) 558-2848 Dr. Medha ShuklaLoma Linda, CA · No drug or device payments recorded (2025) ·
(909) 558-3904 Dr. Prashanth Porayette, MDLoma Linda, CA · $125 in drug and device payments (2025) ·
(909) 558-3904 Dr. Rodolfo SilvaLoma Linda, CA · $294 in drug and device payments (2025) ·
(909) 558-4773 Dr. Sagar Pathak, M.D.Loma Linda, CA · $569 in drug and device payments (2025) ·
(909) 651-4996 Dr. Shelly Choudhury, M.D.Loma Linda, CA · No drug or device payments recorded (2025) ·
(909) 558-3904 Dr. Barry Steinmetz, MDLong Beach, CA · $591 in drug and device payments (2025) ·
(562) 933-3009 Dr. Leon Chen, M.D.Long Beach, CA · $50 in drug and device payments (2025) ·
(562) 933-8513 Dr. Mini Mehra, M.D.Long Beach, CA · $311 in drug and device payments (2025) ·
(562) 933-3009 Dr. Mohamed Shaban, M.D.Long Beach, CA · $663 in drug and device payments (2025) ·
(714) 377-6993 Dr. Robert Tran, MDLong Beach, CA · $410 in drug and device payments (2025) ·
(562) 933-6900 Dr. Alvin ChanLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-0867 Dr. Ardath Yamaga, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 669-2181 Dr. Beth Carter, MDLos Angeles, CA · $39 in drug and device payments (2025) ·
(888) 631-2452 Dr. Blake RosenthalLos Angeles, CA · $297 in drug and device payments (2025) ·
(323) 361-7798 Dr. Chuan Hao Lin, MDLos Angeles, CA · $15 in drug and device payments (2025) ·
(323) 669-2181 Dr. David Ziring, M.D.Los Angeles, CA · $48,865 in drug and device payments (2025) ·
(310) 206-6134 Dr. Elaheh Vahabnezhad, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-0867 Dr. Emily Whang, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 206-6134 Dr. Frank Sinatra, MDLos Angeles, CA · $34 in drug and device payments (2025) ·
(323) 669-2181 Dr. Frederick Watanabe, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 783-4011 Dr. Hillel Naon, MDLos Angeles, CA · $70 in drug and device payments (2025) ·
(323) 361-2181 Dr. Janice Bitong, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-0867 Dr. Jaya Punati, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 361-5924 Dr. Jessica Deas, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 660-2450 Dr. Johanna Ascher Bartlett, M.D.Los Angeles, CA · $19 in drug and device payments (2025) ·
(323) 361-2181 Dr. Jorge Vargas, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 206-6136 Dr. Kattayoun Kordy, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 660-2450 Common questions
How many Pediatric Gastroenterology providers are in California?There are 268 Pediatric Gastroenterology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Pediatric Gastroenterology providers in California offer telehealth?Yes. 4 of the 268 Pediatric Gastroenterology providers in California (about 1%) report offering telehealth services in CMS data.
Which cities in California have the most Pediatric Gastroenterology providers?Palo Alto (47), Los Angeles (46), San Diego (41) have the highest concentration of Pediatric Gastroenterology providers in California.
How many Pediatric Gastroenterology providers in California received drug or device company payments?143 of 268 Pediatric Gastroenterology providers in California (53%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Which hospitals do Pediatric Gastroenterologists in California work at?According to CMS facility affiliation records, the California hospitals where the most Pediatric Gastroenterologists hold privileges are Children's Hosp of Los Angeles in Los Angeles; Memorialcare Long Beach Medical Center in Long Beach; Ronald Reagan UCLA Medical Center in Los Angeles.
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