WM
30 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Mattiace, Family Medicine Specialist in Williamsport, PA?
Dr. William Mattiace, MD is a Family Medicine Specialist, who primarily practices in Williamsport, PA. He has been practicing for over 30 years and is board certified. Dr. Mattiace graduated from Sidney Kimmel Medical College at Thomas Jefferson University and completed his residency at Williamsport Hosp Med Ctr, Family Medicine. Dr. Mattiace is fluent in English, and is currently seeing new patients. Dr. Mattiace’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Mattiace’s office at (570) 323-5991.
Where did Dr. Mattiace go to medical school and complete their residency?
Residency: Williamsport Hosp Med Ctr, Family Medicine | Susquehanna Health System/Williamsport Hospital and Medical Center Program
Medical School: Jefferson Medical College of Thomas Jefferson University | Sidney Kimmel Medical College at Thomas Jefferson University
Is Dr. Mattiace board certified as a Family Medicine Specialist?
Yes, Dr. William Mattiace, MD is board certified by the American Board of Family Medicine
What languages does Dr. Mattiace speak?
Dr. Mattiace and their clinical team can communicate with patients in the following languages:
English
What procedures does a Family Medicine Specialist like Dr. Mattiace typically perform?
As a Family Medicine Specialist, procedures performed by Dr. William Mattiace may include:
- ALCAT Testing
- Joint Injection
- Medication Assisted Treatment (MAT)
- Nebulizer Treatment
- OB Consultation
- Ozone Injection
- Post-Surgery Checkup
- Tetanus Shot
Please contact Dr. Mattiace's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
Does Dr. Mattiace accept my insurance?
Dr. Mattiace accepts most major insurance plans. Important: Please call our office at (570) 323-5991 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Mattiace accept in Williamsport, PA?
Dr. Mattiace in Williamsport, PA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
CVS Health (formerly Aetna)
Highmark Health
Medicare
UnitedHealth Group
UPMC Health System
View All Insurances
Where is Dr. Mattiace's office located?
Dr. William Mattiace's Primary Practice
1205 River Ave # 1
Williamsport, PA 17701
(570) 323-5991
What hospitals are Dr. Mattiace affiliated with?
Castle Connolly Top Hospital
This doctor is affiliated with a Castle Connolly Top Hospital.
Dr. Mattiace has admitting privileges at the following hospitals:
Geisinger Medical Center,Danville, PA
Ranked in 3 Procedures

Geisinger Medical Center,Danville, PA
Ranked in 3 Procedures
Geisinger Medical Center,Muncy, PA
Geisinger Medical Center,Muncy, PA
What is Dr. Mattiace's NPI number?A National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Mattiace's National Provider Identifier (NPI) number is 1518906262.
What common questions do patients ask about Dr. Mattiace?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Mattiace
What is Dr. William Mattiace's specialty?
Dr. Mattiace is a Family Medicine Specialist near Williamsport, PA.
What does a Family Medicine Specialist do?
Family Medicine is a medical specialty focused on comprehensive healthcare for individuals and families. It is a broad field that integrates biological, clinical, and behavioral sciences. The scope of family medicine covers all ages, genders, organ systems, and disease conditions, offering a holistic approach to patient care.
Is Dr. William Mattiace affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Mattiace is affiliated with Geisinger Medical Center which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Family Medicine Specialist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Family Medicine Specialist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Dr. William Mattiace accepting new patients in Williamsport, PA?
Yes, Dr. William Mattiace is accepting new patients at this time.
Does Dr. William Mattiace offer online booking?
Please contact Dr. Mattiace's office at (570) 323-5991 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Dr. William Mattiace?
Please contact Dr. Mattiace's office at (570) 323-5991 to schedule an appointment.
Where is Dr. Mattiace's office located?
Dr. Mattiace's office is located in Williamsport, PA.
Which board certifications does Dr. William Mattiace have?
Dr. William Mattiace is certified by the American Board of Family Medicine.
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