Dr. Mark L. Thornton
- Gender: Male
- Experience: 41 years
- Graduated from: University Of Texas Medical Branch At Galveston
- Graduation year: 1980
- Sole propriator: No
- NPI: 1669552790
Dr. Mark L. Thornton MD
Internist
He is located at 7720 Jones Maltsberger Road Ste. # 110 in San Antonio, TX 78216. Can help patients with the following: Constipation, Cystitis, Edema, Headache, Hyperlipidemia, Peptic Ulcer. His National Provider Identifier (NPI) number is 1669552790. Appointment can be made via the phone number (210) 822-2004. He is affiliated with 1 practices.
Conditions treated
Dr. Mark Lee Thornton, 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. Mark L. Thornton.
- 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. Mark L. Thornton as in-network for the following 2026 plans.
Health plans
Harbor Health
Network data as of Sep 14, 2026, as reported by the insurer.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Harbor Health G0 $0 Deductible $0 PCP $0 Mental Health Office Visit $0 Express Care | HMO · Gold | Preferred | Accepting new patients |
| Harbor Health G1S $30 PCP $30 Mental Health Office Visit $30 Express Care | HMO · Gold | Preferred | Accepting new patients |
| Harbor Health S1 $0 PCP $0 Mental Health Office Visit $0 Express Care | HMO · Silver | Preferred | Accepting new patients |
| Harbor Health S1S $40 PCP $40 Mental Health Office Visit $40 Express 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. Mark L. Thornton 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. Mark L. Thornton is enrolled to bill Medicare as a Practitioner - Internal Medicine .
Bills through: Execudoc, Inc
Based on Medicare's public enrollment records as of Sep 29, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Studies
UNIVERSITY OF TEXAS MEDICAL BRANCH AT GALVESTON
Graduated in 1980
Looking for more Internists?
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- Address: Suite 405 7330 San Pedro Avenue San Antonio, 78216, TX
- Gender: Male
- Address: Suite 540 7330 San Pedro Avenue San Antonio, 78216, TX
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- Address: Suite 200 12446 West Avenue San Antonio, 78216, TX
- Gender: Female
- Address: Ste 210 510 Med Court San Antonio, 78258, TX
- Gender: Male
- Address: Suite 510 200 Concord Plaza Drive San Antonio, 78216, TX
- Gender: Male
- Address: Suite 405 7330 San Pedro San Antonio, 78216, TX
- Gender: Female
- Address: Suite 540 7330 San Pedro Avenue San Antonio, 78216, TX
- Gender: Male
- Address: Suite 540 7330 San Pedro Avenue San Antonio, 78216, TX
Questions & Answers
Does Dr. Mark Lee Thornton accept insurance?
Dr. Mark Lee Thornton is listed in-network for 4 ACA Marketplace (Obamacare/HealthCare.gov) plans from Harbor Health. See the Marketplace plans section for details.
Where can you meet with Dr. Mark Lee Thornton?
Dr. Mark Lee Thornton's office is located at 7720 Jones Maltsberger Road Ste. # 110 in San Antonio, TX 78216.
Does Dr. Mark Lee Thornton have affiliation with practices?
Dr. Mark Lee Thornton is affiliated with Execudoc.
What conditions does Dr. Mark Lee Thornton treat?
Dr. Mark Lee Thornton provides treatment for Constipation, Cystitis, Edema, Headache, Hyperlipidemia, Peptic Ulcer. For the full list see this list.