Dr. Leonard G. Quallich
- Gender: Male
- Experience: 25 years
- Graduated from: Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University
- Graduation year: 1996
- Sole propriator: No
- NPI: 1093797326
Dr. Leonard G. Quallich III MD
Gastroenterologist
He is located at 4600 Investment Drive Ste 380 in Troy, MI 48098. Can help patients with the following: Atherosclerosis, Cancer, Childhood Obesity, Hiatal Hernia, Obesity, Primary Biliary Cirrhosis (PBC). His National Provider Identifier (NPI) number is 1093797326. Appointment can be made via the phone number (248) 267-5025. He is affiliated with 2 practices and 2 hospitals.
Conditions treated
Dr. Leonard G. Quallich, being an gastroenterologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Leonard G. Quallich.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Ascites
- Asthma
- Atherosclerosis
- Autoimmune Hepatitis
- Bad Breath
- Barrett's Esophagus
- Bladder Control
- Bleeding Varices
- Blood in Stool
- Botulism
- Cancer
- Carcinoid Tumor
- Celiac Disease
- Chest Pain
- Childhood Obesity
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Cirrhosis
- Clostridium Difficile Colitis
- Colitis
- Colonoscopy
- Common Cold
- Constipation
- Crohn's Disease
- Cystitis
- Diarrhea
- Diverticulosis
- Edema
- Eosinophilic Esophagitis
- Esophagitis
- Fatty Liver Disease
- Feeding and Swallowing
- Fever
- Food Allergies
- Gallbladder Pain
- Gastric Bypass Surgery
- Gastritis
- Gastroesophageal Reflux Disease (GERD)
- Gastroparesis
- General Care
- Headache
- Heart Disease
- Heartburn
- Helicobacter Pylori Infection
- Hemorrhoids
- Hepatitis A (HAV)
- Hepatitis B (HBV)
- Hepatitis C (HCV)
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Indigestion
- Inflammatory Bowel Disease (IBD)
- Influenza
- Inguinal Hernia
- Internal Bleeding
- Intussusception
- Irritable Bowel Syndrome (IBS)
- Lactose Intolerance
- Leaky Gut Syndrome
- Liver Disease
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Pancreas Divisum
- Pancreatic Cancer
- Pancreatic Cysts
- Pancreatitis
- Peptic Ulcer
- Portal Hypertension
- Prescription Refill
- Primary Biliary Cirrhosis (PBC)
- Primary Sclerosing Cholangitis (PSC)
- Stomach Cancer
- Swallowing Disorders
- Ulcerative Colitis
- Urethritis
- Urinary Tract Infection (UTI)
Procedures Performed by Dr. Leonard G. Quallich
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Leonard G. Quallich as in-network for the following 2026 plans.
Health plans
McLaren Health Plan Community
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 27 plans from McLaren Health Plan Community
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| MHP Bronze | HMO · Bronze | In Network | Accepting new patients |
| MHP Bronze | HMO · Bronze | Out of Network | Accepting new patients |
| MHP Bronze | HMO · Bronze | Rewards | Accepting new patients |
| MHP Bronze Saver (Expanded) | HMO · Expanded Bronze | In Network | Accepting new patients |
| MHP Bronze Saver (Expanded) | HMO · Expanded Bronze | Out of Network | Accepting new patients |
| MHP Bronze Saver (Expanded) | HMO · Expanded Bronze | Rewards | Accepting new patients |
| MHP Expanded Bronze Standard | HMO · Expanded Bronze | In Network | Accepting new patients |
| MHP Expanded Bronze Standard | HMO · Expanded Bronze | Out of Network | Accepting new patients |
| MHP Expanded Bronze Standard | HMO · Expanded Bronze | Rewards | Accepting new patients |
| MHP Gold | HMO · Gold | In Network | Accepting new patients |
| MHP Gold | HMO · Gold | Out of Network | Accepting new patients |
| MHP Gold | HMO · Gold | Rewards | Accepting new patients |
| MHP Gold Standard | HMO · Gold | In Network | Accepting new patients |
| MHP Gold Standard | HMO · Gold | Out of Network | Accepting new patients |
| MHP Gold Standard | HMO · Gold | Rewards | Accepting new patients |
| MHP Silver Exchange | HMO · Silver | In Network | Accepting new patients |
| MHP Silver Exchange | HMO · Silver | Out of Network | Accepting new patients |
| MHP Silver Exchange | HMO · Silver | Rewards | Accepting new patients |
| MHP Silver Exchange Rewards | HMO · Silver | In Network | Accepting new patients |
| MHP Silver Exchange Rewards | HMO · Silver | Out of Network | Accepting new patients |
| MHP Silver Exchange Rewards | HMO · Silver | Rewards | Accepting new patients |
| MHP Silver Standard | HMO · Silver | In Network | Accepting new patients |
| MHP Silver Standard | HMO · Silver | Out of Network | Accepting new patients |
| MHP Silver Standard | HMO · Silver | Rewards | Accepting new patients |
| MHP Young Adult/Catastrophic | HMO · Catastrophic | In Network | Accepting new patients |
| MHP Young Adult/Catastrophic | HMO · Catastrophic | Out of Network | Accepting new patients |
| MHP Young Adult/Catastrophic | HMO · Catastrophic | Rewards | Accepting new patients |
Priority Health
Network data as of Aug 26, 2026, as reported by the insurer.
Show all 16 plans from Priority Health
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| MyPriority Balanced Silver | HMO · Silver | Mypriority HMO | Accepting new patients |
| MyPriority Balanced Silver Southeast Michigan Network | HMO · Silver | Beaumont Narrow Network HMO | Accepting new patients |
| MyPriority Enhanced Gold Southeast Michigan Network | HMO · Gold | Beaumont Narrow Network HMO | Accepting new patients |
| MyPriority Premier Silver | HMO · Silver | Mypriority HMO | Accepting new patients |
| MyPriority Standard Bronze | HMO · Expanded Bronze | Mypriority HMO | Accepting new patients |
| MyPriority Standard Bronze - Southeast Michigan Network | HMO · Expanded Bronze | Beaumont Narrow Network HMO | Accepting new patients |
| MyPriority Standard Bronze - Travel | HMO · Expanded Bronze | Mypriority HMO | Accepting new patients |
| MyPriority Standard Gold | HMO · Gold | Mypriority HMO | Accepting new patients |
| MyPriority Standard Gold Southeast Michigan Network | HMO · Gold | Beaumont Narrow Network HMO | Accepting new patients |
| MyPriority Standard Silver | HMO · Silver | Mypriority HMO | Accepting new patients |
| MyPriority Standard Silver - Southeast Michigan Network | HMO · Silver | Beaumont Narrow Network HMO | Accepting new patients |
| MyPriority Standard Silver - Travel | HMO · Silver | Mypriority HMO | Accepting new patients |
| MyPriority Value Bronze | HMO · Expanded Bronze | Mypriority HMO | Accepting new patients |
| MyPriority Value Bronze HSA | HMO · Expanded Bronze | Mypriority HMO | Accepting new patients |
| MyPriority Value Bronze HSA Southeast Michigan Network | HMO · Expanded Bronze | Beaumont Narrow Network HMO | Accepting new patients |
| MyPriority Value Bronze Southeast Michigan Network | HMO · Expanded Bronze | Beaumont Narrow Network HMO | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Leonard G. Quallich is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Leonard G. Quallich is enrolled to bill Medicare as a Practitioner - Gastroenterology .
Bills through: Troy Gastroenterology Pc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Janssen | $65 |
| Merck | $42 |
| Takeda | $35 |
Other
| Food and Beverage | $325 |
| Other | $29 |
Studies
CLVLND CLINIC LERNER COLLEGE OF MED OF CASE WSTN RSV UNIVERSITY
Graduated in 1996Additional Specialities
- Internist
Looking for more Gastroenterologists?
There are 6 other gastroenterologists in this region.
- Gender: Female
- Address: Suite 380 4600 Investment Drive Troy, 48098, MI
- Gender: Male
- Address: Suite 380 4600 Investment Drive Troy, 48098, MI
- Gender: Male
- Address: Suite 380 4600 Investment Drive Troy, 48098, MI
- Gender: Male
- Address: Suite 380 4600 Investment Drive Troy, 48098, MI
- Gender: Male
- Address: Suite 380 4600 Investment Drive Troy, 48098, MI
- Gender: Male
- Address: Suite 380 4600 Investment Drive Troy, 48098, MI
Questions & Answers
What conditions does Dr. Leonard G. Quallich treat?
Dr. Leonard G. Quallich provides treatment for Atherosclerosis, Cancer, Childhood Obesity, Hiatal Hernia, Obesity, Primary Biliary Cirrhosis (PBC). For the full list see this list.
Does Dr. Leonard G. Quallich have affiliation with practices?
Dr. Leonard G. Quallich is affiliated with Michigan Heart Group. For the full list of practices see this list.
Where can you meet with Dr. Leonard G. Quallich?
Dr. Leonard G. Quallich's office is located at 4600 Investment Drive Ste 380 in Troy, MI 48098.
Does Dr. Leonard G. Quallich accept patients with McLaren Health Plan Community?
Yes, Dr. Leonard G. Quallich is listed in-network for McLaren Health Plan Community through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Has Dr. Leonard G. Quallich affiliation with hospitals?
Dr. Leonard G. Quallich is affiliated with BEAUMONT HOSPITAL, ROYAL OAK. For the full list of hospitals see this list.