Dr. Gregory J. Shirk
- Gender: Male
- Experience: 26 years
- Graduated from: Palmer College Chiropractic - Davenport
- Graduation year: 1995
- Sole propriator: Yes
- NPI: 1629064464
Dr. Gregory J. Shirk DC
Chiropractor
He is located at 630 1st Street Northwest in Mason City, IA 50401. Can help patients with the following: Back Pain, Car Accident Injuries, Fibromyalgia, Headache, Low Back Pain, Whiplash. His National Provider Identifier (NPI) number is 1629064464. Appointment can be made via the phone number (641) 423-4455. He is affiliated with 1 practices.
Conditions treated
Dr. Gregory J. Shirk, being an chiropractor, 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. Gregory J. Shirk.
- Arthritis
- Back Pain
- Car Accident Injuries
- Carpal Tunnel Syndrome
- Fibromyalgia
- Headache
- Herniated Disc
- Low Back Pain
- Migraine
- Muscle Pain
- Neck Pain
- Scoliosis
- Whiplash
Procedures Performed by Dr. Gregory J. Shirk
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Gregory J. Shirk as in-network for the following 2026 plans.
Health plans
Ambetter Health
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 16 plans from Ambetter Health
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Complete Gold | HMO · Gold | Preferred | Accepting new patients |
| Complete Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Elite Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Elite Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Everyday Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Everyday Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Everyday Gold | HMO · Gold | Preferred | Accepting new patients |
| Everyday Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Focused Silver | HMO · Silver | Preferred | Accepting new patients |
| Focused Silver + Vision + Adult Dental | HMO · Silver | Preferred | Accepting new patients |
| Standard Expanded Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Standard Expanded Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Standard Gold | HMO · Gold | Preferred | Accepting new patients |
| Standard Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Standard Silver | HMO · Silver | Preferred | Accepting new patients |
| Standard Silver + Vision + Adult Dental | HMO · Silver | Preferred | Accepting new patients |
Medica
Network data as of Feb 7, 2025, as reported by the insurer.
Show all 45 plans from Medica
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Elevate by Medica Bronze $0 Copay PCP Visits | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Elevate by Medica Bronze Share | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Elevate by Medica Expanded Bronze Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Elevate by Medica Gold $0 Copay PCP Visits | EPO · Gold | Preferred | Accepting new patients |
| Elevate by Medica Gold Share | EPO · Gold | Preferred | Accepting new patients |
| Elevate by Medica Gold Standard | EPO · Gold | Preferred | Accepting new patients |
| Elevate by Medica Silver $0 Copay PCP Visits | EPO · Silver | Preferred | Accepting new patients |
| Elevate by Medica Silver Share | EPO · Silver | Preferred | Accepting new patients |
| Elevate by Medica Silver Standard | EPO · Silver | Preferred | Accepting new patients |
| Inspire by Medica Bronze $0 Copay PCP Visits | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Inspire by Medica Bronze Share | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Inspire by Medica Expanded Bronze Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Inspire by Medica Gold $0 Copay PCP Visits | EPO · Gold | Preferred | Accepting new patients |
| Inspire by Medica Gold Share | EPO · Gold | Preferred | Accepting new patients |
| Inspire by Medica Gold Standard | EPO · Gold | Preferred | Accepting new patients |
| Inspire by Medica Silver $0 Copay PCP Visits | EPO · Silver | Preferred | Accepting new patients |
| Inspire by Medica Silver Share | EPO · Silver | Preferred | Accepting new patients |
| Inspire by Medica Silver Standard | EPO · Silver | Preferred | Accepting new patients |
| Medica Insure Bronze $0 Copay PCP Visits | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica Insure Bronze Share | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica Insure Expanded Bronze Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica Insure Gold $0 Copay PCP Visits | EPO · Gold | Preferred | Accepting new patients |
| Medica Insure Gold Share | EPO · Gold | Preferred | Accepting new patients |
| Medica Insure Gold Standard | EPO · Gold | Preferred | Accepting new patients |
| Medica Insure Silver $0 Copay PCP Visits | EPO · Silver | Preferred | Accepting new patients |
| Medica Insure Silver Share | EPO · Silver | Preferred | Accepting new patients |
| Medica Insure Silver Standard | EPO · Silver | Preferred | Accepting new patients |
| Medica with CHI Health Bronze $0 Copay PCP Visits | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica with CHI Health Bronze $0 Copay PCP Visits + Adult Eye Exam | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica with CHI Health Bronze Share | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica with CHI Health Bronze Share + Adult Eye Exam | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica with CHI Health Expanded Bronze Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica with CHI Health Expanded Bronze Standard + Adult Eye Exam | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica with CHI Health Gold $0 Copay PCP Visits | EPO · Gold | Preferred | Accepting new patients |
| Medica with CHI Health Gold $0 Copay PCP Visits + Adult Eye Exam | EPO · Gold | Preferred | Accepting new patients |
| Medica with CHI Health Gold Share | EPO · Gold | Preferred | Accepting new patients |
| Medica with CHI Health Gold Share + Adult Eye Exam | EPO · Gold | Preferred | Accepting new patients |
| Medica with CHI Health Gold Standard | EPO · Gold | Preferred | Accepting new patients |
| Medica with CHI Health Gold Standard + Adult Eye Exam | EPO · Gold | Preferred | Accepting new patients |
| Medica with CHI Health Silver $0 Copay PCP Visits | EPO · Silver | Preferred | Accepting new patients |
| Medica with CHI Health Silver $0 Copay PCP Visits + Adult Eye Exam | EPO · Silver | Preferred | Accepting new patients |
| Medica with CHI Health Silver Share | EPO · Silver | Preferred | Accepting new patients |
| Medica with CHI Health Silver Share + Adult Eye Exam | EPO · Silver | Preferred | Accepting new patients |
| Medica with CHI Health Silver Standard | EPO · Silver | Preferred | Accepting new patients |
| Medica with CHI Health Silver Standard + Adult Eye Exam | EPO · Silver | Preferred | Accepting new patients |
Oscar Insurance Company
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 16 plans from Oscar Insurance Company
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze Classic 4700 | MercyOne | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Classic Standard | MercyOne | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Elite + PCP Saver Plus | MercyOne | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Breathe Easy with Enhanced COPD Benefits | MercyOne | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Chronic Care CKM | MercyOne | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Diabetes | MercyOne | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Gold Classic Standard | MercyOne | EPO · Gold | Preferred | Accepting new patients |
| Gold Elite | MercyOne | EPO · Gold | Preferred | Accepting new patients |
| Secure | MercyOne | EPO · Catastrophic | Preferred | Accepting new patients |
| Silver Classic Standard | MercyOne | EPO · Silver | Preferred | Accepting new patients |
| Silver Classic | MercyOne | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple Breathe Easy with Enhanced COPD Benefits | MercyOne | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple Chronic Care CKM | MercyOne | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple Diabetes | MercyOne | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple PCP Saver | MercyOne | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple Women's Health with Menopause Benefits | MercyOne | EPO · Silver | Preferred | 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. Gregory J. Shirk 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. Gregory J. Shirk is enrolled to bill Medicare as a Practitioner - Chiropractic .
Bills through: Shirk 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.
Studies
PALMER COLLEGE CHIROPRACTIC - DAVENPORT
Graduated in 1995
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Questions & Answers
Does Dr. Gregory J. Shirk accept patients with Ambetter Health?
Yes, Dr. Gregory J. Shirk is listed in-network for Ambetter Health through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Does Dr. Gregory J. Shirk have affiliation with practices?
Dr. Gregory J. Shirk is affiliated with Acute Care Chiropractic.
Where can you meet with Dr. Gregory J. Shirk?
Dr. Gregory J. Shirk's office is located at 630 1st Street Northwest in Mason City, IA 50401.
What conditions does Dr. Gregory J. Shirk treat?
Dr. Gregory J. Shirk provides treatment for Back Pain, Car Accident Injuries, Fibromyalgia, Headache, Low Back Pain, Whiplash. For the full list see this list.