Dr. Brian L. Gretta
- Gender: Male
- Experience: 35 years
- Graduated from: Ohio State University College Of Medicine
- Graduation year: 1986
- Sole propriator: Yes
- NPI: 1659356384
Dr. Brian L. Gretta M.D.
Emergency Physician
He is located at 1 Parkland Drive in Derry, NH 03038. Can help patients with the following: Febrile Seizure, Frostbite, Headache, Insect Stings, Laceration, Nausea and Vomiting. His National Provider Identifier (NPI) number is 1659356384. Appointment can be made via the phone number (207) 794-3321. He is affiliated with 3 hospitals.
Conditions treated
Dr. Brian L. Gretta, being an emergency 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. Brian L. Gretta.
- Acute Pain
- Altitude Sickness
- Angina
- Brain Aneurysm
- Brain Hemorrhage
- Broken Bone
- Bruises
- Choking
- Common Cold
- Coronavirus
- Costochondritis
- Febrile Seizure
- Fever
- Frostbite
- General Care
- Headache
- Hematoma
- Influenza
- Insect Stings
- Laceration
- Migraine
- Nausea and Vomiting
- Phlebitis and Thrombophlebitis
- Prescription Refill
- Whiplash
Procedures Performed by Dr. Brian L. Gretta
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Brian L. Gretta as in-network for the following 2026 plans.
Health plans
WellSense Health Plan
Network data as of Sep 1, 2026, as reported by the insurer.
Show all 7 plans from WellSense Health Plan
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| WellSense Clarity NH Bronze 6500 HSA + $0 Rx List + 24/7 Nurse Advice | HMO · Expanded Bronze | Non Preferred | Not accepting new patients |
| WellSense Clarity NH Bronze 7500 HSA + $0 Rx List + 24/7 Nurse Advice | HMO · Expanded Bronze | Non Preferred | Not accepting new patients |
| WellSense Clarity NH Bronze 7600 HSA + $0 Rx List + 24/7 Nurse Advice | HMO · Expanded Bronze | Non Preferred | Not accepting new patients |
| WellSense Clarity NH Gold 2000 + $0 Rx List + 24/7 Nurse Advice | HMO · Gold | Non Preferred | Not accepting new patients |
| WellSense Clarity NH Silver 0 Deductible + $0 Rx List + 24/7 Nurse Advice | HMO · Silver | Non Preferred | Not accepting new patients |
| WellSense Clarity NH Silver 3400 + $0 Rx List + 24/7 Nurse Advice | HMO · Silver | Non Preferred | Not accepting new patients |
| WellSense Clarity NH Silver 6000 + $0 Rx List + 24/7 Nurse Advice | HMO · Silver | Non Preferred | Not 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. Brian L. Gretta 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. Brian L. Gretta is enrolled to bill Medicare as a Practitioner - Emergency Medicine (also registered under: Practitioner - Internal Medicine) .
Bills through: Penobscot Valley 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
| Actavis Pharma | $13 |
Other
| Food and Beverage | $14 |
Studies
OHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated in 1986Affiliated hospitals
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Questions & Answers
What conditions does Dr. Brian L. Gretta treat?
Dr. Brian L. Gretta provides treatment for Febrile Seizure, Frostbite, Headache, Insect Stings, Laceration, Nausea and Vomiting. For the full list see this list.
Has Dr. Brian L. Gretta affiliation with hospitals?
Dr. Brian L. Gretta is affiliated with PIEDMONT MOUNTAINSIDE HOSPITAL INC. For the full list of hospitals see this list.
Does Dr. Brian L. Gretta accept patients with WellSense Health Plan?
Yes, Dr. Brian L. Gretta is listed in-network for WellSense Health Plan through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Where can you meet with Dr. Brian L. Gretta?
Dr. Brian L. Gretta's office is located at 1 Parkland Drive in Derry, NH 03038.