Dr. John Zwiacher, MD

New Patients

Dr. John Zwiacher, MD

General Surgery | Male

W997 Sunnyside Rd, Green Lake, WI 54941 Get Directions

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Care Philosophy

Dr. Zwiacher specializes in General Surgery and practices in Green Lake, WI. He practices at 2 locations.

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Dr. Zwiacher's Experience

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Board Certifications

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Conditions Treated

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Procedures Performed

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Background Check

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Languages Spoken

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Memberships & Professional Affiliations

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Dr. Zwiacher's Reviews

Likelihood of recommending Dr. Zwiacher to family and friends
based on 11 total surveys (1 with a review)
Key Survey Insights
  • Trustworthiness
  • Helpfulness
  • Staff
  • Scheduling
Experience with Dr. Zwiacher
  • Level of trust in provider's decisions
  • How well provider explains medical condition(s)
  • How well provider listens and answers questions
  • Spends appropriate amount of time with patients
Dr. Zwiacher's Office & Staff
  • Ease of scheduling urgent appointments
  • Office environment, cleanliness, comfort, etc.
  • Staff friendliness and courteousness
  • Total wait time (waiting & exam rooms)
    10 – 15 minutes (10)
Open Full Survey+
in Palmer, AK |
Removed gall bladder. Surgery seemed to go ok. Went home next day, feeling pretty good. Two days later, crippling pain -- he nicked the main bile duct. Different surgeon fixed it on emergency basis, but spent 10 days in the hospital. Never saw/heard from Zwaicher. Difficult recovery with ongoing pain and other symptoms, but Zwaicher treated me like a complainer. Tried to talk with him, but he was dismissive and arrogant; spent less than 5 minutes with me. Would NEVER go back.
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  • General Surgery

Board Certifications

Why It Matters: Dr. Zwiacher's Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • General Surgery

Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • Abscess
  • Anal and Rectal Cancer
  • Anal Disorders
  • Anal Fissure
  • Aneurysm
  • Anorectal Abscess
  • Appendicitis
  • Benign Tumor
  • Breast Cancer
  • Breast Diseases
  • Breast Lump
  • Cancer
  • Cholecystitis and Gallstones
  • Collapsed Lung (Pneumothorax)
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Diaphragmatic and-or Hiatal Hernia
  • Empyema
  • Esophageal Cancer
  • Esophageal Diseases
  • Esophageal Diverticulum
  • Esophageal Fistula
  • Esophageal Varices
  • Fracture
  • Gastrointestinal Diseases
  • Gynecologic Cancer
  • Head and Neck Cancer
  • Hemorrhoids
  • Hernia
  • Hyperparathyroidism
  • Incisional Hernia
  • Inflammatory Bowel Disease
  • Inguinal Hernia
  • Intestinal Abscess
  • Intestinal Obstruction
  • Lipomas
  • Liver Cancer
  • Lung Cancer
  • Pancreatic Cancer
  • Parathyroid (Gland) Disease
  • Parathyroid (Gland) Tumor: Other than Malignant
  • Partial Lung Collapse
  • Peripheral Arterial Aneurysm
  • Peripheral Arterial Aneurysm and Dissection
  • Peripheral Arterial Dissection
  • Peripheral Arterial Embolism and Thrombosis
  • Peripheral Vascular Disease (PAD, PVD)
  • Phlebitis and Thrombophlebitis
  • Pleura Cancer
  • Pleural Effusion
  • Pulmonary Disease
  • Rib Fracture
  • Secondary Malignancies
  • Small Intestine Cancer
  • Soft Tissue Sarcoma
  • Stomach and Small Intestine Cancer
  • Stomach Cancer
  • Stomach Diseases
  • Thrombosis
  • Ulcer
  • Ulcerative Colitis
  • Umbilical Hernia
  • Varicose Veins
  • Vascular Disease
  • Ventral Hernia
  • Vulvar Cancer

Procedures Performed

  • Appendectomy, Laparoscopic
  • Arteriovenous Shunt Creation
  • Biopsy of Breast
  • Breast Surgical Procedure
  • Colectomy
  • Colon and Rectal Surgery
  • Decortication and Pleurectomy
  • Destruction of Anal Tumor
  • Dialysis Access Procedures
  • Dressing and-or Debridement of Wound, Infection, or Burn (incl. Negative Pressure Wound Therapy)
  • Embolectomy, Thrombectomy, or Vessel Exploration
  • Enterostomy (Laparoscopic or Open)
  • Esophageal Surgery
  • Esophagectomy (Esophagogastrostomy, Esophagojejunostomy)
  • Esophagomyotomy
  • Excision of Breast Tumor
  • Excision of Rectal Tumor
  • Excision of Skin Lesion
  • Excision, Shaving, or Destruction of Skin and Subcutaneous Tissue (incl. Mohs Micrographic Surgery), Tissue Transfer
  • Gallbladder Removal
  • Gallbladder Removal (Cholecystectomy), Laparoscopic
  • Gastroenterology Procedures
  • Head and Neck Surgery
  • Heart Surgery
  • Hemorrhoidectomy or Excision of Anal Tags
  • Hernia Repair
  • Incisional Hernia Repair, Laparoscopic
  • Inguinal Hernia Repair, Laparoscopic
  • Inguinal Hernia Repair, Open
  • Intestinal Transplant (incl. Enterectomy)
  • Laparoscopic Surgical Procedure
  • Laparotomy
  • Lobectomy, Open
  • Lung Removal (Partial or Complete): Open, or Resection of Lung Tumor: Open
  • Lung Surgery
  • Lymph Node Biopsy or Excision
  • Mastectomy
  • Open Incisional and-or Ventral Hernia Repair
  • Orchiectomy
  • Paraesophageal Hernia Repair, Laparoscopic
  • Parathyroidectomy
  • Peripheral Artery Bypass
  • Peripheral Artery Catheterization
  • Port Placements or Replacements
  • Proctectomy, Open or Laparoscopic (incl. Swenson and Duhamel Procedures)
  • Removal of Reproductive Organs (Hysterectomy, Oophorectomy, Salpingectomy, Salpingo-Oophorectomy, Resection of Peritoneal Malignancy)
  • Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
  • Revision of Arteriovenous Shunt for Renal Dialysis
  • Skin Grafts
  • Splenectomy
  • Splenectomy and Splenorrhaphy
  • Stomach Surgery
  • Thoracentesis
  • Thoracoscopic Wedge Resection
  • Thromboendarterectomy or Excision of Infected Graft
  • Tracheal Surgery
  • Transendoscopic Stent Placement
  • Umbilical or Ventral Hernia Repair, Laparoscopic
  • Vascular Surgical Procedure
  • Video-Assisted Thoracoscopic Surgery (VATS) or Thoracotomy
  • Wound Repair

Background Check

  • n/a
    Malpractice Claims not available

    Healthgrades does not collect malpractice information for Wisconsin.

    What is medical malpractice
  • 1

    Dr. Zwiacher has received 1 sanction

    More What is a sanction or disciplinary action
    • Disciplinary action in another state  (3/20/2013)
    • Action Taken: Reprimand
    • Summary: Please reference the following Document
    • Documentation: Download here (PDF)
    • State: Wisconsin
  • 1
    Board Action

    Dr. Zwiacher has 1 board action

    More What are board actions
    • Failure to disclose required information  (11/5/2016)
    • Action Taken: Fine
    • Summary: Please reference the following Document
    • State: Alaska
    • Documentation: Download here (PDF)


  • Medical School
    Univ Of Ok Coll Of Med

    Graduated in 1985

Awards & Recognition

  • Awards & Honors

    Dr. Zwiacher has no awards or honors listed.

  • Media & Publications

    Dr. Zwiacher has no media or publications listed.

Languages Spoken

  • English

Memberships &
Professional Affiliations

Dr. Zwiacher does not have any memberships or affiliations listed. If you are Dr. Zwiacher and would like to add memberships or affiliations, please update your free profile.


Dr. Zwiacher's experience matches your search based on the following criteria:

  • Based on total number of patients treated over the last 12 months
  • Specializes in General Surgery
  • Board certified in General Surgery
  • Malpractice claims in Wisconsin not available
  • Sanctions found
  • Board actions found

Why Does Experience Matter?

Even specialists specialize. One orthopedic surgeon might do nothing but hip surgeries, while another does nothing but knees. If you want the best possible care, it’s critical to match your medical need with the doctor who truly specializes in treating it.


Patient Satisfaction Results for Dr. Zwiacher

Overall Patient Satisfaction Score

Dr. Zwiacher's Office & Staff

Ease of scheduling urgent appointments
Office environment, cleanliness, comfort, etc.
Staff friendliness and courteousness
Total wait time (waiting & exam rooms)
10 – 15 minutes

Experience with Dr. Zwiacher

Level of trust in provider's decisions
How well provider explains medical condition(s)
How well provider listens and answers questions
Spends appropriate amount of time with patients