Dr. Marshall C. Long
- Gender: Male
- Experience: 38 years
- Graduated from: West Virginia School Of Osteopathic Medicine
- Graduation year: 1983
- Sole propriator: Yes
- NPI: 1487718672
Dr. Marshall C. Long DO
Family Physician
He is located at 118 12th Street Ext in Princeton, WV 24740. Can help patients with the following: Common Cold, Diabetes, Headache, Hypothyroidism, Mold Exposure, Nausea and Vomiting. His National Provider Identifier (NPI) number is 1487718672. Appointment can be made via the phone number (304) 487-7936. He is affiliated with 2 practices and 2 hospitals.
Conditions treated
Dr. Marshall C. Long, being an family physician, 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. Marshall C. Long.
- Abdominal Pain
- Aging In Place
- Anxiety
- Arthritis
- Asthma
- Autism
- Birth Control Counseling
- Breastfeeding and Lactation
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Diabetes
- Fever
- General Care
- Headache
- Heart Disease
- High Blood Pressure
- Hyperlipidemia
- Hypothyroidism
- Infant Care
- Influenza
- Migraine
- Mold Exposure
- Nausea and Vomiting
- Obesity
- Osteoarthritis (OA)
- Osteoporosis
- Pregnancy
- Prenatal Care
- Prescription Refill
- Thyroid Disease
- Women's Health
Procedures Performed by Dr. Marshall C. Long
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Marshall C. Long as in-network for the following 2026 plans.
Health plans
CareSource
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 22 plans from CareSource
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze 7500 $25 Generic Drugs | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze 7500 $25 Generic Drugs + Adult Vision & Fitness | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Diabetes Gold 3000 $0 Chronic Care Drugs & Services | HMO · Gold | Preferred | Accepting new patients |
| Diabetes Gold 3000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness | HMO · Gold | Preferred | Accepting new patients |
| Diabetes Silver 5000 $0 Chronic Care Drugs & Services | HMO · Silver | Preferred | Accepting new patients |
| Diabetes Silver 5000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness | HMO · Silver | Preferred | Accepting new patients |
| Gold 2000 $15 Generic Drugs | HMO · Gold | Preferred | Accepting new patients |
| Gold 2000 $15 Generic Drugs + Adult Vision & Fitness | HMO · Gold | Preferred | Accepting new patients |
| Healthy Heart Gold 3000 $0 Chronic Care Drugs & Services | HMO · Gold | Preferred | Accepting new patients |
| Healthy Heart Gold 3000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness | HMO · Gold | Preferred | Accepting new patients |
| Healthy Heart Silver 5000 $0 Chronic Care Drugs & Services | HMO · Silver | Preferred | Accepting new patients |
| Healthy Heart Silver 5000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness | HMO · Silver | Preferred | Accepting new patients |
| Low Deductible Silver 5000 $3 Generic Drugs | HMO · Silver | Preferred | Accepting new patients |
| Low Deductible Silver 5000 $3 Generic Drugs + Adult Vision & Fitness | HMO · Silver | Preferred | Accepting new patients |
| Low Premium Bronze 10600 $25 Generic Drugs | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Low Premium Bronze 10600 $25 Generic Drugs + Adult Vision & Fitness | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Low Premium Silver 6200 $3 Generic Drugs | HMO · Silver | Preferred | Accepting new patients |
| Low Premium Silver 6200 $3 Generic Drugs + Adult Vision & Fitness | HMO · Silver | Preferred | Accepting new patients |
| Platinum Zero $5 Generic Drugs | HMO · Platinum | Preferred | Accepting new patients |
| Platinum Zero $5 Generic Drugs + Adult Vision & Fitness | HMO · Platinum | Preferred | Accepting new patients |
| Silver 6000 $20 Generic Drugs | HMO · Silver | Preferred | Accepting new patients |
| Silver 6000 $20 Generic Drugs + Adult Vision & Fitness | HMO · Silver | Preferred | Accepting new patients |
Highmark Blue Cross Blue Shield West Virginia
Network data as of Sep 8, 2026, as reported by the insurer.
Show all 15 plans from Highmark Blue Cross Blue Shield West Virginia
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| my Blue Access WV Major Events PPO Catastrophic 10600 - 3 Free PCP Visits | PPO · Catastrophic | In Network | Accepting new patients |
| my Blue Access WV PPO Bronze 3800 | PPO · Expanded Bronze | In Network | Accepting new patients |
| my Blue Access WV PPO Bronze 3800 + Adult Dental and Vision | PPO · Expanded Bronze | In Network | Accepting new patients |
| my Blue Access WV PPO Bronze 9200 | PPO · Bronze | In Network | Accepting new patients |
| my Blue Access WV PPO Gold 0 | PPO · Gold | In Network | Accepting new patients |
| my Blue Access WV PPO Gold 0 + Adult Dental and Vision | PPO · Gold | In Network | Accepting new patients |
| my Blue Access WV PPO Gold 1700 HSA | PPO · Gold | In Network | Accepting new patients |
| my Blue Access WV PPO Premier Gold 0 | PPO · Gold | In Network | Accepting new patients |
| my Blue Access WV PPO Premier Gold 0 + Adult Dental and Vision | PPO · Gold | In Network | Accepting new patients |
| my Blue Access WV PPO Premier Silver 0 | PPO · Silver | In Network | Accepting new patients |
| my Blue Access WV PPO Premier Silver 0 + Adult Dental and Vision | PPO · Silver | In Network | Accepting new patients |
| my Blue Access WV PPO Standard Bronze 7500 | PPO · Expanded Bronze | In Network | Accepting new patients |
| my Blue Access WV PPO Standard Gold 2000 | PPO · Gold | In Network | Accepting new patients |
| my Blue Access WV PPO Standard Gold 2000 + Adult Dental and Vision | PPO · Gold | In Network | Accepting new patients |
| my Blue Access WV PPO Standard Silver 6000 | PPO · Silver | In Network | 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. Marshall C. Long 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. Marshall C. Long is enrolled to bill Medicare as a Practitioner - Family Practice (also registered under: Practitioner - General Practice) .
Bills through: Princeton Community Hospital Assn. Inc.
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
| Boehringer Ingelheim | $1017 |
| AstraZeneca | $982 |
| Sanofi | $755 |
Other
| Food and Beverage | $7016 |
| Consulting | $1 |
Studies
WEST VIRGINIA SCHOOL OF OSTEOPATHIC MEDICINE
Graduated in 1983
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Questions & Answers
Where can you meet with Dr. Marshall C. Long?
Dr. Marshall C. Long's office is located at 118 12th Street Ext in Princeton, WV 24740.
What conditions does Dr. Marshall C. Long treat?
Dr. Marshall C. Long provides treatment for Common Cold, Diabetes, Headache, Hypothyroidism, Mold Exposure, Nausea and Vomiting. For the full list see this list.
Has Dr. Marshall C. Long affiliation with hospitals?
Dr. Marshall C. Long is affiliated with PRINCETON COMMUNITY HOSPITAL. For the full list of hospitals see this list.
Does Dr. Marshall C. Long have affiliation with practices?
Dr. Marshall C. Long is affiliated with Mercer Medical Group. For the full list of practices see this list.
Does Dr. Marshall C. Long accept patients with CareSource?
Yes, Dr. Marshall C. Long is listed in-network for CareSource through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.