Dr. Mark S. Gresla
- Gender: Male
- Experience: 37 years
- Graduated from: Indiana University School Of Medicine
- Graduation year: 1984
- Sole propriator: Yes
- NPI: 1467482034
Dr. Mark S. Gresla M.D.
Family Physician
He is located at 1100 Mercer Avenue in Decatur, IN 46733. Can help patients with the following: Chronic Obstructive Pulmonary Disease (COPD), Fever, Headache, High Blood Pressure, Infant Care, Osteoarthritis (OA). His National Provider Identifier (NPI) number is 1467482034. Appointment can be made via the phone number (260) 724-2145. He is affiliated with 2 practices and 2 hospitals.
Conditions treated
Dr. Mark S. Gresla, 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. Mark S. Gresla.
- 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
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Mark S. Gresla as in-network for the following 2026 plans.
Health plans
Anthem Blue Cross and Blue Shield
Network data as of Sep 10, 2026, as reported by the insurer.
Show all 15 plans from Anthem Blue Cross and Blue Shield
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Anthem Bronze Essential 10150 ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Bronze | Participating | Not accepting new patients |
| Anthem Bronze Essential 10150 Adult Dental/Vision ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Bronze | Participating | Not accepting new patients |
| Anthem Bronze Essential 6500 HSA (+ Incentives) | HMO · Expanded Bronze | Participating | Not accepting new patients |
| Anthem Bronze Essential 7500 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Expanded Bronze | Participating | Not accepting new patients |
| Anthem Bronze Essential POS 5500 ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Expanded Bronze | Participating | Not accepting new patients |
| Anthem Bronze Essential POS 7500 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Expanded Bronze | Participating | Not accepting new patients |
| Anthem Catastrophic Essential (+ Incentives) | HMO · Catastrophic | Participating | Not accepting new patients |
| Anthem Gold Essential 2000 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Gold | Participating | Not accepting new patients |
| Anthem Gold Essential 2200 ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Gold | Participating | Not accepting new patients |
| Anthem Heart Healthy Bronze Essential 4500 ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Expanded Bronze | Participating | Not accepting new patients |
| Anthem Heart Healthy Silver Essential 4500 ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Silver | Participating | Not accepting new patients |
| Anthem Silver Essential 3500 HSA (+ Incentives) | HMO · Silver | Participating | Not accepting new patients |
| Anthem Silver Essential 6000 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Silver | Participating | Not accepting new patients |
| Anthem Silver Essential 7000 ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Silver | Participating | Not accepting new patients |
| Anthem Silver Essential 7000 Adult Dental/Vision ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Silver | Participating | Not accepting new patients |
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 |
| HDHP Preventive Silver 5500 $0 Chronic Care Drugs | HMO · Silver | 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 |
| HSA Eligible Bronze 6000 | HMO · Expanded Bronze | 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 |
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 S. Gresla 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 S. Gresla is enrolled to bill Medicare as a Practitioner - Family Practice .
Bills through: Adams County Memorial Hospital
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
| Novo Nordisk | $692 |
| Sanofi | $225 |
| Janssen | $164 |
Other
| Food and Beverage | $1384 |
Studies
INDIANA UNIVERSITY SCHOOL OF MEDICINE
Graduated in 1984
Looking for more Family Physicians?
There are 7 other family physicians in this region.
- Gender: Female
- Address: Suite C 815 High Street Decatur, 46733, IN
- Gender: Male
- Address: 1100 Mercer Avenue Decatur, 46733, IN
- Gender: Male
- Address: 1100 Mercer Avenue Decatur, 46733, IN
- Gender: Male
- Address: 979 West 1700 North Provo, 84604, UT
- Gender: Male
- Address: Suite 2 955 High Street Decatur, 46733, IN
- Gender: Female
- Address: 1100 Mercer Avenue Decatur, 46733, IN
- Gender: Male
- Address: Suite 1 955 High Street Decatur, 46733, IN
Questions & Answers
What conditions does Dr. Mark S. Gresla treat?
Dr. Mark S. Gresla provides treatment for Chronic Obstructive Pulmonary Disease (COPD), Fever, Headache, High Blood Pressure, Infant Care, Osteoarthritis (OA). For the full list see this list.
Where can you meet with Dr. Mark S. Gresla?
Dr. Mark S. Gresla's office is located at 1100 Mercer Avenue in Decatur, IN 46733.
Does Dr. Mark S. Gresla have affiliation with practices?
Dr. Mark S. Gresla is affiliated with Monroe Family Medicine. For the full list of practices see this list.
Does Dr. Mark S. Gresla accept insurance?
Dr. Mark S. Gresla is listed in-network for 37 ACA Marketplace (Obamacare/HealthCare.gov) plans from Anthem Blue Cross and Blue Shield, CareSource. See the Marketplace plans section for details.
Has Dr. Mark S. Gresla affiliation with hospitals?
Dr. Mark S. Gresla is affiliated with PARKVIEW REGIONAL MEDICAL CENTER. For the full list of hospitals see this list.