Dr. William O. Passarelli
- Gender: Male
- Experience: 30 years
- Graduated from: New York Medical College
- Graduation year: 1991
- Sole propriator: Yes
- NPI: 1285653113
Dr. William O. Passarelli II MD
Internist
He is located at 4300 Hospital Street Suite 102 in Pascagoula, MS 39581. Can help patients with the following: Acute Pain, Chest Pain, General Care, Headache, Hot Flashes, Osteoporosis. His National Provider Identifier (NPI) number is 1285653113. Appointment can be made via the phone number (228) 762-1002. He is affiliated with 2 practices and 3 hospitals.
Conditions treated
Dr. William O. Passarelli, 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. William O. Passarelli.
- 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)
Procedures Performed by Dr. William O. Passarelli
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. William O. Passarelli as in-network for the following 2026 plans.
Health plans
Ambetter Health
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 14 plans from Ambetter Health
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Choice Bronze HSA | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Choice Bronze HSA + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Complete Gold | HMO · Gold | Preferred | Accepting new patients |
| Complete Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Everyday Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Everyday Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Everyday Gold | HMO · Gold | Preferred | Accepting new patients |
| Everyday Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Standard Expanded Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Standard Expanded Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Standard Gold | HMO · Gold | Preferred | Accepting new patients |
| Standard Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Standard Silver | HMO · Silver | Preferred | Accepting new patients |
| Standard Silver + Vision + Adult Dental | HMO · Silver | Preferred | Accepting new patients |
Cigna Healthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 10 plans from Cigna Healthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Connect Bronze 6500 Indiv Med Deductible | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze 8500 Indiv Med Deductible | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze CMS Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Gold CMS Standard | EPO · Gold | Preferred | Accepting new patients |
| Connect myDiabetesCare Bronze | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Connect myDiabetesCare Silver | EPO · Silver | Preferred | Accepting new patients |
| Connect myHeartCare Silver | EPO · Silver | Preferred | Accepting new patients |
| Connect Silver 4000 Indiv Med Deductible | EPO · Silver | Preferred | Accepting new patients |
| Connect Silver 6500 Indiv Med Deductible | EPO · Silver | Preferred | Accepting new patients |
| Connect Silver CMS Standard | EPO · Silver | Preferred | Accepting new patients |
Oscar Health Plan, Inc.
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 7 plans from Oscar Health Plan, Inc.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze Classic Standard | HMO · Expanded Bronze | Preferred | Accepting new patients at some locations |
| Bronze Elite + PCP Saver Plus | HMO · Expanded Bronze | Preferred | Accepting new patients at some locations |
| Bronze Simple Chronic Care CKM | HMO · Expanded Bronze | Preferred | Accepting new patients at some locations |
| Gold Classic Standard | HMO · Gold | Preferred | Accepting new patients at some locations |
| Silver Classic Standard | HMO · Silver | Preferred | Accepting new patients at some locations |
| Silver Simple | HMO · Silver | Preferred | Accepting new patients at some locations |
| Silver Simple Chronic Care CKM | HMO · Silver | Preferred | Accepting new patients at some locations |
UnitedHealthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 15 plans from UnitedHealthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, No Referrals) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, Dental + Vision, No Referrals) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Essential (No Referrals) | HMO · Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard (No Referrals) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard+ (Dental + Vision, No Referrals) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $5 Tier 2 Rx, No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus + $0 Indiv Med Ded ($0 Virtual Urgent Care, $5 Tier 2 Rx, Dental + Vision, No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Standard (No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Value ($0 Virtual Urgent Care, $3 Tier 2 Rx, No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Value + ($0 Virtual Urgent Care, $3 Tier 2 Rx, No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Silver Advantage ($0 Virtual Urgent Care, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Advantage + ($0 Virtual Urgent Care, Dental + Vision, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, Dental + Vision, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Standard (No Referrals) | HMO · Silver | Non 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. William O. Passarelli 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. William O. Passarelli is enrolled to bill Medicare as a Practitioner - Cardiovascular Disease (cardiology) (also registered under: Practitioner - Internal Medicine) .
Bills through: Singing River Health System
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.
Payments received
Drug payment
| Medtronic | $1176 |
| Gilead Sciences | $984 |
| Biotronik | $911 |
Other
| Food and Beverage | $9288 |
| Promotional Speaking or Service | $500 |
Studies
NEW YORK MEDICAL COLLEGE
Graduated in 1991
Looking for more Internists?
Out of the 33 internists in this region, here are 10 randomly selected ones for you to explore.
- Gender: Male
- Address: Suite 103 4300 Hospital Street Pascagoula, 39581, MS
- Gender: Male
- Address: 2010 Brookwood Medical Center Drive Birmingham, 35209, AL
- Gender: Female
- Address: 2809 Denny Avenue Pascagoula, 39581, MS
- Gender: Male
- Address: 2809 Denny Avenue Pascagoula, 39581, MS
- Gender: Male
- Address: 2809 Denny Avenue Pascagoula, 39581, MS
- Gender: Male
- Address: Suite 208 4211 Hospital Street Pascagoula, 39581, MS
- Gender: Female
- Address: 4511 Hospital Street Pascagoula, 39581, MS
- Gender: Female
- Address: 4511 Hospital Street Pascagoula, 39581, MS
- Gender: Male
- Address: 4500 13th Street Gulfport, 39501, MS
- Gender: Male
- Address: 2809 Denny Avenue Pascagoula, 39581, MS
Questions & Answers
Has Dr. William O. Passarelli affiliation with hospitals?
Dr. William O. Passarelli is affiliated with MERIT HEALTH BILOXI. For the full list of hospitals see this list.
Does Dr. William O. Passarelli have affiliation with practices?
Dr. William O. Passarelli is affiliated with Southern MS Heart Center PA. For the full list of practices see this list.
Does Dr. William O. Passarelli accept patients with Ambetter Health?
Yes, Dr. William O. Passarelli is listed in-network for Ambetter Health through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Where can you meet with Dr. William O. Passarelli?
Dr. William O. Passarelli's office is located at 4300 Hospital Street Suite 102 in Pascagoula, MS 39581.
What conditions does Dr. William O. Passarelli treat?
Dr. William O. Passarelli provides treatment for Acute Pain, Chest Pain, General Care, Headache, Hot Flashes, Osteoporosis. For the full list see this list.