Gastroenterology | Whittier, CA

Gastroenterology • Whittier, CA • 2 (Downey and Whittier) locations

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About

PIH Health Gastroenterology in Whittier and Downey, California offers comprehensive digestive health care including endoscopic procedures, colorectal screening, and treatment for conditions such as GERD, IBD, liver disease, and gastrointestinal cancers. The practice provides advanced diagnostic tests and coordinated care with your primary physician.

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Clinic Type

Gastroenterology

Address

Digestive Health Downey Medical Office Building, 11480 Brookshire Ave #204, Downey, CA 90241; Digestive Health Washington Medical Office Building, 12291 Washington Blvd #201, Whittier, CA 90606

Phone

562-904-4445 (Downey) and 562-698-0306 (Whittier)

Email

Amanda.Enriquez@PIHHealth.org

Opening Hours

Not published — contact the clinic to confirm hours.

Website

https://www.pihhealth.org/health-services/gastroenterology/

Services Offered

Gastroenterology
Digestive health care
Endoscopic procedures
Colorectal conditions
GERD
GI cancers
Liver disease
Pancreas, gallbladder and bile duct disorders
Hemorrhoids
IBD (Crohn’s disease and ulcerative colitis)
Constipation
Swallowing disorders

Technology & Equipment

Bravo reflux testing
Capsule endoscopy
Colonoscopy
ERCP
Endoscopic ultrasound
Esophageal manometry
Upper endoscopy
Endoscopy-related diagnostic tools

Team

Amol Satish Koldhekar — MD (GI)
Andrew Khoi Nguyen — MD (GI)
Kevin Ramnik Dholaria — MD (GI)
Neal Michael Shindel — MD (GI)
Jiaming (Jackson) Zhu — MD (GI)

Insurance & Payment

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Languages Spoken

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Social Media

Twitter Youtube Facebook Instagram

Photos

What Patients Say

Overall sentiment across review platforms: mixed

PIH Health (Dr. Renee Palta): 4.9 / 5 (598 reviews)
House Clinic (Dr. Jiaming Zhu): 4.7 / 5 (368 reviews)
Vitals (Dr. Robert Mecum): 3.3 / 5 (29 ratings)
RateMDs (Dr. John J. Lah): 3.4 / 5
WebMD (Dr. John J. Lah): 3.0 / 5 (6 ratings)
Vitals (Dr. Ashwin Ashok): 4.1 / 5 (8 ratings)

Patients praise

Professional and clear communication from some physicians
Successful, painless, and well-explained procedures (e.g., colonoscopies)
Helpful and caring demeanor reported by some patients

Common complaints

Poor or unprofessional office staff communication (e.g., hanging up, not returning calls)
Long wait times for appointments or procedures
Concerns regarding billing practices and high procedure costs
Perceived lack of attentiveness or short appointment durations

"Everything went very smoothly and painlessly. Dr. Mecum explained the procedure clearly, performed the colonoscopies without any problem, and took time to review and explain the results to us."

— Vitals (Dr. Robert Mecum review)

"His staff is also very unreliable and rude. I had to hold their hand every time to make sure something was done."

— RateMDs (Dr. John J. Lah review)

Synthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 10, 2026. Own this clinic? Claim or correct this listing.