MM
51 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Mak, Gastroenterologist in Merced, CA?
Dr. Man-Siak Mak, MD is a Gastroenterologist, who primarily practices in Merced, CA with 1 additional practice location. He has been practicing for over 51 years and is board certified. Dr. Mak completed his residency at Mem Sloan-Kettering Cancer Ctr, Internal Medicine; Bronx-Lebanon Hosp Ctr, Internal Medicine; St Clares Hosp Hlth Ctr, Flexible Or Transitional Year. Dr. Mak is fluent in English and Chinese, and is currently seeing new patients. Dr. Mak’s practice accepts UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Mak’s office at (209) 349-8459.
Where did Dr. Mak go to medical school and complete their residency?
Residency: Mem Sloan-Kettering Cancer Ctr, Internal Medicine; Bronx-Lebanon Hosp Ctr, Internal Medicine; St Clares Hosp Hlth Ctr, Flexible Or Transitional Year
Medical School: Natl Defense Med Ctr, Taipei, Taiwan
Is Dr. Mak board certified as a Gastroenterologist?
Yes, Dr. Man-Siak Mak, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Mak speak?
Dr. Mak and their clinical team can communicate with patients in the following languages:
Chinese
English
What conditions does Dr. Mak treat?
As a Gastroenterologist, Dr. Mak diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Mak. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- GERD with Esophagitis
- Acid Reflux
- Eosinophilic Esophagitis
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Reflux Esophagitis
- Acid Reflux Esophagus Inflammation
- Heartburn with Esophagus Damage
- Gastroesophageal Reflux
- Heartburn
- Indigestion
ICD-10 Codes:
- K2100: Gastro-esophageal reflux disease with esophagitis, without bleeding
- K219: Gastro-esophageal reflux disease without esophagitis
Also known as:
- Rectal Bleeding
- Gastrointestinal Bleeding
- Gastrointestinal (GI) Bleeding
- Anal Bleeding
- Blood in Stool
- Lower GI Bleed
ICD-10 Codes:
- K625: Hemorrhage of anus and rectum
Also known as:
- Constipation
- Difficulty Passing Stool
- Infrequent Bowel Movements
- Hard Stools
ICD-10 Codes:
- K5900: Constipation, unspecified
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal polyps
- Bowel polyps
- Intestinal polyps
ICD-10 Codes:
- K635: Polyp of colon
Also known as:
- Upper Middle Abdominal Pain
- Abdominal Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
ICD-10 Codes:
- R1013: Epigastric pain
What procedures does Dr. Mak perform?
As a Gastroenterologist, Dr. Mak performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Mak. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Colonoscopy with Tissue Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible colonoscopy with EMR
- Endoscopic mucosal resection (colon)
- Colon polyp removal during colonoscopy
CPT Codes:
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 45390: Colonoscopy, flexible; with endoscopic mucosal resection
Also known as:
- Upper Endoscopy with Biopsy
- Biopsy
- Endoscopy
- EGD with Biopsy
- Gastroscopy with Biopsy
- Esophagogastroduodenoscopy with Biopsy
CPT Codes:
- 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple
Also known as:
- Colonoscopy with Injections
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Injection
- Colon Scope with Medication
- Therapeutic Colonoscopy
CPT Codes:
- 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance
Does Dr. Mak accept my insurance?
Dr. Mak accepts most major insurance plans. Important: Please call our office at (209) 349-8459 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Mak accept in Merced, CA?
Dr. Mak in Merced, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Alignment Health Plan
All Other Third Party
AllCare Health Plan
Blue Shield of California
Central California Alliance for Health
Commonwealth Care Alliance
Crown Cork and Seal Company
CVS Health (formerly Aetna)
Express Scripts
UnitedHealthcare
View All Insurances
Where is Dr. Mak's office located?
What is Dr. Mak's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Mak's National Provider Identifier (NPI) number is 1609875004.
What common questions do patients ask about Dr. Mak?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Mak
What is Dr. Man-Siak Mak's specialty?
Dr. Mak is a Gastroenterologist near Merced, CA. An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs. Contact Dr. Mak to book an appointment today.
Is this Dr. Man-Siak Mak affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Mak is affiliated with Emanuel Medical Center - Turlock, CA, Memorial Hospital Los Banos which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Gastroenterologist?
Explore Gastroenterologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Man-Siak Mak accepting new patients in Merced, CA?
Yes, Dr. Man-Siak Mak is accepting new patients at this time.
Does Dr. Man-Siak Mak offer online booking?
Please contact Dr. Mak's office at (209) 349-8459 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Man-Siak Mak?
Please contact Dr. Mak's office at (209) 349-8459 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Man-Siak Mak have?
Dr. Man-Siak Mak is certified by the American Board of Internal Medicine.
Other Gastroenterologist Near Merced, CA
SM
Gastroenterologist
Accepting patientsDr. Sivakumar Munnangi, MD is a Gastroenterologist, who primarily practices in Merced, CA. He has been practicing for over 34 years and is board certified.
Merced, CA
LC
Gastroenterologist
Accepting patientsDr. Lillian Choi, MD is a Gastroenterologist, who primarily practices in Merced, CA with 1 additional practice location. She is board certified.
Merced, CA
MK
Gastroenterologist
Accepting patientsDr. Madhu Kris, MD is a Gastroenterologist, who primarily practices in Merced, CA. He is board certified.
Merced, CA