Dr. Jefferson T. Loa
- Gender: Male
- Experience: 16 years
- Graduation year: 2005
- Sole propriator: No
- NPI: 1336304773
Dr. Jefferson T. Loa M.D.
Internist
He is located at 3600 Northwest Samaritan Drive in Corvallis, OR 97330. Can help patients with the following: Acute Pain, Atherosclerosis, Chest Pain, Fever, Influenza, Urethritis. His National Provider Identifier (NPI) number is 1336304773. Appointment can be made via the phone number (541) 768-5111. He is affiliated with 3 practices and 2 hospitals.
Conditions treated
Dr. Jefferson Tiu Loa, 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. Jefferson T. Loa.
- 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. Jefferson T. Loa as in-network for the following 2026 plans.
Health plans
Moda Health Plan, Inc.
Network data as of Sep 12, 2026, as reported by the insurer.
Show all 13 plans from Moda Health Plan, Inc.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Moda Health Affinity Bronze 8000 | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Moda Health Affinity Bronze 9000 | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Moda Health Affinity Bronze HDHP 7500 | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Moda Health Affinity Gold 1000 | EPO · Gold | Preferred | Accepting new patients |
| Moda Health Affinity Gold 1500 | EPO · Gold | Preferred | Accepting new patients |
| Moda Health Affinity Gold 250 | EPO · Gold | Preferred | Accepting new patients |
| Moda Health Affinity Silver 3000 | EPO · Silver | Preferred | Accepting new patients |
| Moda Health Affinity Silver 3400 | EPO · Silver | Preferred | Accepting new patients |
| Moda Health Affinity Silver 4500 | EPO · Silver | Preferred | Accepting new patients |
| Moda Health Affinity Silver 6000 | EPO · Silver | Preferred | Accepting new patients |
| Moda Health Oregon Standard Bronze Affinity | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Moda Health Oregon Standard Gold Affinity | EPO · Gold | Preferred | Accepting new patients |
| Moda Health Oregon Standard Silver Affinity | EPO · 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. Jefferson T. Loa 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. Jefferson T. Loa is enrolled to bill Medicare as a Practitioner - Internal Medicine .
Bills through: Mid-valley Healthcare 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.
Studies
Graduated in 2005Affiliated practices
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Questions & Answers
What conditions does Dr. Jefferson Tiu Loa treat?
Dr. Jefferson Tiu Loa provides treatment for Acute Pain, Atherosclerosis, Chest Pain, Fever, Influenza, Urethritis. For the full list see this list.
Does Dr. Jefferson Tiu Loa accept insurance?
Dr. Jefferson Tiu Loa is listed in-network for 13 ACA Marketplace (Obamacare/HealthCare.gov) plans from Moda Health Plan, Inc.. See the Marketplace plans section for details.
Does Dr. Jefferson Tiu Loa have affiliation with practices?
Dr. Jefferson Tiu Loa is affiliated with Mercy Clinic Family Medicine-Republic. For the full list of practices see this list.
Has Dr. Jefferson Tiu Loa affiliation with hospitals?
Dr. Jefferson Tiu Loa is affiliated with SALEM HOSPITAL. For the full list of hospitals see this list.
Where can you meet with Dr. Jefferson Tiu Loa?
Dr. Jefferson Tiu Loa's office is located at 3600 Northwest Samaritan Drive in Corvallis, OR 97330.