4.3
6 Ratings with 1 written Review
Summary
Dr. Man-Siak Mak is a gastroenterologist and internal medicine physician with 58 years of experience treating digestive and general health conditions. He earned his medical degree from the National Defense Medical Center in Taiwan and completed his residency at St. Clare's Hospital and Healthcare Center. Dr. Mak is multilingual, speaking Spanish, Chinese, Portuguese, and English to serve diverse patient populations.
Dr. Mak is affiliated with Mercy Medical Center and practices at multiple locations throughout Merced, California. He specializes in diagnosing and treating common digestive issues such as colon polyps, GERD, and hemorrhoids. His expertise includes performing colonoscopies and both upper and lower gastrointestinal endoscopies to help patients maintain their digestive health. Patients have given Dr. Mak an average rating of 4.3 out of 5.
Dr. Mak is affiliated with Mercy Medical Center and practices at multiple locations throughout Merced, California. He specializes in diagnosing and treating common digestive issues such as colon polyps, GERD, and hemorrhoids. His expertise includes performing colonoscopies and both upper and lower gastrointestinal endoscopies to help patients maintain their digestive health. Patients have given Dr. Mak an average rating of 4.3 out of 5.
AI-generated from data on this provider profile.
Quick Facts
- accepting new patients
- 58 years of experience
- speaks Spanish, Chinese, Portuguese, English
- St Clares Hospital And Healthcare Center
- 1 written review
- 2 specialties
- 11 areas of expertise
- 2 board certifications
- 1 hospital affiliation
- 4 office locations
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Locations
Dr. Man-Siak Mak has 4 locationsUniversity Surgery Center
1390 E Yosemite Ave Ste BMerced, CA 95340 Tel: (209) 580-3400
Mon6:30 am - 5:00 pm
Tue6:30 am - 5:00 pm
Wed6:30 am - 5:00 pm
Thu6:30 am - 5:00 pm
Fri6:30 am - 4:30 pm
SatClosed
SunClosed
Timothy S Johnston Md And Associates
3170 Collins Dr Ste BMerced, CA 95348Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed
Timothy S Johnston Md And Associates
410 E Yosemite Ave Ste BMerced, CA 95340 Tel: (209) 934-8077
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  |  |  |
| Dr. Man-Siak Mak, MD | Bhavana Akotia, PA-C | Rachel Oliver, APRN | Rebecca Humphries, APRN |
| Gastroenterology | Gastroenterology | Gastroenterology | Gastroenterology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | Accepts New Patients |
| 58 Years of Experience | |||
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks Spanish, Chinese, Portuguese, English | Speaks English | Speaks English | Speaks English |
| Merced , CA | Tempe , AZ | SACRAMENTO , CA | SACRAMENTO , CA |
| Med School: Natl Defense Med Ctr Taiwan (244-03 Eff 1/1971) | Med School: Charles R Drew University | Med School: University of South Alabama | Med School: Emory University |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Man-Siak Mak
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. Man-Siak Mak has the following 2 specialties
Specialty Expertise
Dr. Man-Siak Mak has the following 11 areas of expertise
Certifications, License, & Education
58 Years Experience
MEDICAL LICENSE
Medical Doctor, California, 2026, Active
EDUCATION & TRAINING
Residency
St Clares Hospital And Healthcare Center
Medical School
Natl Defense Med Ctr Taiwan (244-03 Eff 1/1971)Graduated in 1968
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Frequently Asked Questions
- Which hospitals is Dr. Man-Siak Mak affiliated with?
- Dr. Man-Siak Mak is affiliated with Mercy Medical Center.
- Does Dr. Man-Siak Mak accept my insurance?
- You can see the insurance plans that Dr. Man-Siak Mak accepts on their Vitals profile.
- Does Dr. Man-Siak Mak accept virtual/telehealth appointments?
- Dr. Man-Siak Mak has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Is Dr. Man-Siak Mak accepting new patients?
- Dr. Man-Siak Mak is accepting new patients on Vitals. View Dr. Man-Siak Mak's profile on Vitals to make an appointment.
- Where is Dr. Man-Siak Mak's office located?
- Dr. Man-Siak Mak's office is located at 1390 E Yosemite Ave Ste B, Merced, CA, 95340.
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