Dr. Frederick R. Stack
- Gender: Male
- Experience: 30 years
- Graduation year: 1991
- Sole propriator: No
- NPI: 1548256977
Dr. Frederick R. Stack MD
Internist
He is located at 801 5th Street in Sioux City, IA 51101. Can help patients with the following: Constipation, Diarrhea, General Care, Headache, Influenza, Osteoporosis. His National Provider Identifier (NPI) number is 1548256977. Appointment can be made via the phone number (712) 279-2010. He is affiliated with 3 practices and 4 hospitals.
Conditions treated
Dr. Frederick Richard Stack, being an internist, 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. Frederick R. Stack.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Bladder Control
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cystitis
- Diarrhea
- Edema
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Headache
- Heart Disease
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Influenza
- Inguinal Hernia
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Peptic Ulcer
- Prescription Refill
- Urethritis
- Urinary Tract Infection (UTI)
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Frederick R. Stack as in-network for the following 2026 plans.
Health plans
Medica
Network data as of Dec 22, 2020, as reported by the insurer.
Show all 9 plans from Medica
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Medica Insure Bronze $0 Copay PCP Visits | EPO · Expanded Bronze | Standardtier | Accepting new patients |
| Medica Insure Bronze Share | EPO · Expanded Bronze | Standardtier | Accepting new patients |
| Medica Insure Expanded Bronze Standard | EPO · Expanded Bronze | Standardtier | Accepting new patients |
| Medica Insure Gold $0 Copay PCP Visits | EPO · Gold | Standardtier | Accepting new patients |
| Medica Insure Gold Share | EPO · Gold | Standardtier | Accepting new patients |
| Medica Insure Gold Standard | EPO · Gold | Standardtier | Accepting new patients |
| Medica Insure Silver $0 Copay PCP Visits | EPO · Silver | Standardtier | Accepting new patients |
| Medica Insure Silver Share | EPO · Silver | Standardtier | Accepting new patients |
| Medica Insure Silver Standard | EPO · Silver | Standardtier | 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. Frederick R. Stack 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. Frederick R. Stack is enrolled to bill Medicare as a Practitioner - Internal Medicine .
Bills through: Banner-university Medical Group
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.
Studies
Graduated in 1991Additional Specialities
- Specialist
Affiliated practices
Affiliated hospitals
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Questions & Answers
Does Dr. Frederick Richard Stack accept insurance?
Dr. Frederick Richard Stack is listed in-network for 9 ACA Marketplace (Obamacare/HealthCare.gov) plans from Medica. See the Marketplace plans section for details.
Does Dr. Frederick Richard Stack have affiliation with practices?
Dr. Frederick Richard Stack is affiliated with Banner -- University Medical Center Phoenix. For the full list of practices see this list.
What conditions does Dr. Frederick Richard Stack treat?
Dr. Frederick Richard Stack provides treatment for Constipation, Diarrhea, General Care, Headache, Influenza, Osteoporosis. For the full list see this list.
Where can you meet with Dr. Frederick Richard Stack?
Dr. Frederick Richard Stack's office is located at 801 5th Street in Sioux City, IA 51101.
Has Dr. Frederick Richard Stack affiliation with hospitals?
Dr. Frederick Richard Stack is affiliated with KALISPELL REGIONAL MEDICAL CENTER. For the full list of hospitals see this list.