Dr. Oscar J. Chastain
- Gender: Male
- Experience: 41 years
- Graduated from: Baylor College Of Medicine
- Graduation year: 1980
- Sole propriator: No
- NPI: 1285635409
Dr. Oscar J. Chastain III MD
Cardiologist
He is located at 701 East Marshall Avenue Suite 504 in Longview, TX 75601. Can help patients with the following: Mitral Valve Prolapse (MVP), Pacemaker, Palpitations, Pulmonary Edema, Pulmonary Hypertension (PH), Renal Vascular Disease. His National Provider Identifier (NPI) number is 1285635409. Appointment can be made via the phone number (903) 315-2777. He also has a website where you can get more information. The website can be found at https://www.christushealth.org/good-shepherd/find-a-doctor/chastain-oscar. He is affiliated with 3 practices and 1 hospitals.
Conditions treated
Dr. Oscar Jack Chastain, being an cardiologist, 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. Oscar J. Chastain.
- Abdominal Aortic Aneurysm (AAA)
- Achalasia
- Amyloidosis
- Anal Fissure
- Angina
- Aortic Stenosis
- Appendicitis
- Arrhythmia
- Atherosclerosis
- Atrial Fibrillation
- Atrial Flutter
- Atrial Septal Defect (ASD)
- Birth Defects
- Blood Clots
- Boils
- Bradycardia
- Cancer
- Cardiomyopathy
- Carotid Artery Disease
- Cerebral Aneurysm
- Chest Pain
- Chronic Venous Insufficiency
- Colon Cancer
- Congenital Heart Disease (CHD)
- Congestive Heart Failure (CHF)
- Crohn's Disease
- Cyst
- Diverticulosis
- Edema
- Endocarditis
- Enlarged Spleen
- Esophageal Cancer
- Fainting
- Gallstones
- Gangrene
- Heart Attack
- Heart Disease
- Heart Murmur
- Heart Valve Disease
- Hemorrhoids
- Hernia
- High Blood Pressure
- High Cholesterol
- Hyperlipidemia
- Inflammatory Bowel Disease (IBD)
- Lymphedema
- May-Thurner Syndrome
- Mitral Insufficiency
- Mitral Valve Prolapse (MVP)
- Mitral Valve Stenosis
- Myocarditis
- Orthostatic Hypotension
- Pacemaker
- Palpitations
- Pancreatitis
- Paroxysmal Supraventricular Tachycardia (PSVT)
- Peptic Ulcer
- Pericardial Tamponade
- Pericarditis
- Pilonidal Cyst
- Postural Orthostatic Tachycardia Syndrome (POTS)
- Premature Ventricular Contraction (PVC)
- Pulmonary Edema
- Pulmonary Embolism (PE)
- Pulmonary Hypertension (PH)
- Renal Vascular Disease
- Rheumatic Fever
- Rheumatic Heart Disease
- Sebaceous Cyst
- Stroke
- Ulcerative Colitis
- Ventricular Fibrillation
- Ventricular Septal Defect (VSD)
- Wolff-Parkinson-White Syndrome (WPW)
Procedures Performed by Dr. Oscar J. Chastain
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Oscar J. Chastain as in-network for the following 2026 plans.
Health plans
Blue Cross and Blue Shield of Texas
Network data as of Jun 7, 2026, as reported by the insurer.
Show all 19 plans from Blue Cross and Blue Shield of Texas
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Blue Advantage Bronze HMO℠ 204 (27 plan variants) | HMO · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Bronze HMO℠ 301 (14 plan variants) | HMO · Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Bronze HMO℠ Standard (27 plan variants) | HMO · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Gold HMO℠ 206 (27 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Gold HMO℠ 603 (14 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Gold HMO℠ Standard (27 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Bronze℠ 303 (27 plan variants) | POS · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Bronze℠ 305 (27 plan variants) | POS · Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Bronze℠ Standard (27 plan variants) | POS · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Gold℠ 203 (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Gold℠ 803 (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Gold℠ Standard (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Silver℠ 202 (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Silver℠ 605 (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Silver℠ Standard (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Security HMO℠ 200 (27 plan variants) | HMO · Catastrophic | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Silver HMO℠ 205 (27 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Silver HMO℠ 801 (14 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Silver HMO℠ Standard (27 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients |
CHRISTUS Health Plan
Network data as of Jan 1, 1900, as reported by the insurer.
Show all 18 plans from CHRISTUS Health Plan
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| CHRISTUS Bronze (2 Free PCP Visits, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Bronze + Dental & Vision (2 Free PCP Visits, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Bronze Essential (2 Free PCP Visits, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Bronze Essential + Dental & Vision (2 Free PCP Visits, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Catastrophic (3 Free PCP visits) | HMO · Catastrophic | Preferred | Accepting new patients |
| CHRISTUS Gold + Dental & Vision + Fitness ($0 Deductible, $5 PCP, $0 Generic Rx, $0 Virtual Urgent Care) | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Gold + Fitness ($0 Deductible, $5 PCP, $0 Generic Rx, $0 Virtual Urgent Care) | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Gold Essential ($0 Rx Deductible, $5 PCP, $0 Virtual Urgent Care) | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Gold Essential + Dental & Vision ($0 Rx Deductible, $5 PCP, $0 Virtual Urgent Care) | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Silver Essential 70 ($5 PCP, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Silver Essential 70 + Dental & Vision ($5 PCP, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Standard Expanded Bronze ($0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Standard Gold ($0 Virtual Urgent Care) | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Standard Silver 70 ($0 Virtual Urgent Care) | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Value Bronze (3 Free PCP Visits, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Value Bronze + Dental & Vision (3 Free PCP Visits, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Value Silver 70 ($0 Virtual Urgent Care) | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Value Silver 70 + Dental & Vision ($0 Virtual Urgent Care) | HMO · 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. Oscar J. Chastain 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. Oscar J. Chastain is enrolled to bill Medicare as a Practitioner - Thoracic Surgery (also registered under: Practitioner - Vascular Surgery) .
Bills through: Christus Trinity Clinic
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
| Medtronic | $2071 |
| W. L. Gore \u0026 Associates | $228 |
| Abiomed | $134 |
Other
| Food and Beverage | $1819 |
| Travel and Lodging | $1065 |
Studies
BAYLOR COLLEGE OF MEDICINE
Graduated in 1980Other ways to reach out
- Website: https://www.christushealth.org/good-shepherd/find-a-doctor/chastain-oscar
Additional Specialities
- Surgeon
Affiliated practices
Looking for more Cardiologists?
There are 8 other cardiologists in this region.
- Gender: Male
- Address: Suite 5008 703 East Marshall Avenue Longview, 75601, TX
- Gender: Male
- Address: Suite 5008 703 East Marshall Avenue Longview, 75601, TX
- Gender: Male
- Address: 2608 Mcdonald Road Tyler, 75701, TX
- Gender: Male
- Address: Suite 5008 703 E Marshall Ave Longview, 75601, TX
- Gender: Male
- Address: 2410 Round Rock Avenue Suite 110 Round Rock, 78681, TX
- Gender: Male
- Address: Suite 504 701 E Marshall Ave Longview, 75601, TX
- Gender: Male
- Address: 1631 11th Street Wichita Falls, 76301, TX
- Gender: Male
- Address: Suite 5008 703 E Marshall Ave Longview, 75601, TX
Questions & Answers
Has Dr. Oscar Jack Chastain affiliation with hospitals?
Dr. Oscar Jack Chastain is affiliated with GOOD SHEPHERD MEDICAL CENTER MARSHALL.
Does Dr. Oscar Jack Chastain accept patients with CHRISTUS Health Plan?
Yes, Dr. Oscar Jack Chastain is listed in-network for CHRISTUS Health Plan through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
What conditions does Dr. Oscar Jack Chastain treat?
Dr. Oscar Jack Chastain provides treatment for Mitral Valve Prolapse (MVP), Pacemaker, Palpitations, Pulmonary Edema, Pulmonary Hypertension (PH), Renal Vascular Disease. For the full list see this list.
Does Dr. Oscar Jack Chastain have affiliation with practices?
Dr. Oscar Jack Chastain is affiliated with Trinity Clinic. For the full list of practices see this list.
Where can you meet with Dr. Oscar Jack Chastain?
Dr. Oscar Jack Chastain's office is located at 701 East Marshall Avenue Suite 504 in Longview, TX 75601.