Dr. William J. Mccormack, MD | Wailuku, HI | Gastroenterologist

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Dr. William McCormack is a gastroenterologist and internal medicine physician with over four decades of medical experience. They earned their medical degree from the University of South Florida College of Medicine and completed residency training at St. Joseph Hospital. With 41 years in practice, Dr. McCormack brings extensive knowledge to both digestive health and comprehensive internal medicine care.

Dr. McCormack practices at Kaiser Permanente in Wailuku, Hawaii, where they provide specialized gastroenterology services alongside general internal medicine. Their dual specialty training allows them to address complex digestive conditions while managing overall patient health. Patients consistently rate Dr. McCormack highly, with an average rating of 4.5 out of 5 stars, reflecting their commitment to quality care and patient satisfaction.

Overview based on verified provider data

4.5

26 Ratings
41 years of experience
2 insurance plans accepted
St Joseph Hospital
5 written reviews
2 specialties
11 areas of expertise
2 board certifications
1 office location

26 ratings & reviews

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Showing 1 to 5 of 5 reviews

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I have been having GI problems for quite some time and my primary referred me originally to another GI doc that had a 4 month wait. I called Dr. McCormacks office and was seen the same week. My problem was easily and accurately diagnosed and I am finally better!! Everyone was very nice. Most often people only put out reviews when they are upset with a practice, I just wanted to write that it is a great place and if you are having problems the place to go. I saw his nurse practitioner first who was so nice and explained things so well. I also got to meet the doctor who also had a great bedside manner and just so knowledgable. Overall a great experience.

June 5th, 2013

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Most professional doctor and staff. Would highly recommend. Nurse Practitioner is extremly knowledgable and put me at ease.

June 7th, 2012

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My doctor referred me to be evaluated for my gastrointestinal problems. I had an appointment later that week. My problem was diagnosed and treated promptly and my symptoms completely resolved. The staff was extremely courteous. There was essentially no waiting in the waiting area. I had ample time to ask all my questions. At the follow-up visit the new questions I had were fully addressed by the Dr. who was extremely knowledgeable and thoughtful and caring.

September 14th, 2011

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Had appointment for 9:30 and got there before said time. Discussion after arriving was that they were running 45 minutes behind. Waiting time till I left the waiting room was until 11:15 to go to be prepped. I feel that it is professional courtesy to be phoned and advised of such a delay. My time too is valuable and should not be wasted for approx 2 hours in a doctor's waiting room.

May 23rd, 2011

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The RUDEST staff I have ever dealt with and the office hours are horrible..he caters to the old retired golfer crowd..honestly it is sad the doctor doesn't know how rude and unprofessional his office staff is behind his back or when out of the office cause he is a good guy

June 27th, 2010

Kaiser Permanente Wailuku Clinic

80 Mahalani StWailuku, HI 96793

Tel: (808) 243-6000


Dr. William J Mccormack, MD	Ji Soo Choi, APRN	Dr. Arun Khazanchi, MD	Dr. Elizabeth Miriam Higgs, MD
Gastroenterology	Gastroenterology	Gastroenterology	Internal Medicine
	Accepts New Patients	Accepts New Patients
4.5 (26 Ratings)	0 (0 Ratings)	4.5 (100 Ratings)	0 (0 Ratings)
41 Years of Experience		30 Years of Experience	20 Years of Experience
No Virtual Visit Option	Virtual Visit Available	Virtual Visit Available	No Virtual Visit Option
	Speaks English	Speaks English, Spanish
Wailuku , HI	SACRAMENTO , CA	Lakewood Ranch , FL	Wailuku , HI
Med School: University Of South Florida College Of Medicine	Med School: New York University	Med School: St Georges University School Of Medicine	Med School: St Georges University School Of Medicine
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Medicare
Medicare - Medicare

Abdominal Pain
Acid Reflux Disease (Gastroesophageal Reflux / GERD)
Acid Reflux Disease (GERD)
Celiac Disease
Colonoscopy
Constipation
Hemorrhoids
Hepatitis C
Internal Medicine
Irritable Bowel Syndrome (IBS)
Ulcerative Colitis

EDUCATION & TRAINING

Residency

St Joseph Hospital

Medical School

University Of South Florida College Of MedicineGraduated in 1985

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Vascular & Interventional Radiology
29 Years Exp | Lancaster, CA
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Dr. Megan Seiko Motosue, MD
Allergy & Immunology
15 Years Exp | Honolulu, HI
(0)
Dr. Nicole Lee Nazemi, DO
Hospital Medicine
| Kealakekua, HI
(0)
Dr. John Raina Vaz, MD
Infectious Disease
20 Years Exp | Wailuku, HI
(0)
Dr. Christina Mehanni, MD
Nephrology
15 Years Exp | Tualatin, OR
(0)
Dr. Latania Yvette Booker, MD
Internal Medicine
17 Years Exp | Houston, TX
(6)
Dr. Susan Kathleen Stewart, MD
Internal Medicine
52 Years Exp | Wailuku, HI
(0)
Dr. Mark Richard Bell, MD
Internal Medicine
33 Years Exp | Hartford, CT
(0)

Is Dr. William Mccormack accepting new patients?: Dr. William Mccormack has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. William Mccormack?: You can find contact information for Dr. William Mccormack here on Vitals.
Where is Dr. William Mccormack's office located?: Dr. William Mccormack's office is located at 80 Mahalani St, Wailuku, HI, 96793.
Does Dr. William Mccormack accept virtual/telehealth appointments?: Dr. William Mccormack has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Does Dr. William Mccormack accept my insurance?: You can see the insurance plans that Dr. William Mccormack accepts on their Vitals profile.

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