
MD² Philadelphia
Quick Facts
| Practice Type | Concierge |
| Location | Philadelphia, Conshohocken, Center City |
| Doctors | Antonette Brigidi MD, FACP, DipABLM, Internal Medicine, William Duffy MD, FACP, Internal Medicine |
| Year Founded | 2025 |
About
At MD² Philadelphia, two physicians with deep Penn Medicine roots bring decades of academic and clinical experience to concierge care. Dr. William N. Duffy and Dr. Antonette Brigidi opened the practice in 2025 in Conshohocken, PA. The office sits along the Schuylkill River with easy access to Center City Philadelphia. Both physicians hold hospital affiliations with Penn Medicine, Pennsylvania Hospital, and Chester County Hospital.
The practice places strong emphasis on lifestyle medicine, culinary medicine, and nutrition as tools for prevention and treatment. Together, Dr. Duffy and Dr. Brigidi co-direct a culinary medicine course at the Perelman School of Medicine. They maintain well-established relationships with leading specialists across the Philadelphia region. The practice accepts just 50 families per physician, allowing each patient thorough, relationship-centered care.
Details
Address
161 Washington Street, Suite 1500, Conshohocken, PA 19428
Phone
(610) 817-0417Website
Visit websiteOur Doctors
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Frequently Asked Questions
MD² Philadelphia limits each physician to just 50 families. That small panel gives each patient direct, unhurried access to their physician and their physician's partner. The practice designed this structure so both Dr. Duffy and Dr. Brigidi can know each patient thoroughly over time.
The all-inclusive monthly fee is $2,334 for an individual. Family members can join at an additional cost. The fee covers all care and services the office provides, including unlimited access to your physician and their physician partner.
MD² Philadelphia does not bill insurance or Medicare. The monthly membership fee covers all care and services provided by the practice. Patients should plan to manage any outside specialist or hospital costs through their own insurance separately.
MD² Philadelphia offers internal medicine, preventive medicine, executive health, lifestyle medicine, culinary medicine, and nutritional counseling. Both physicians integrate food-as-medicine principles and therapeutic lifestyle interventions into primary care. The practice also coordinates multi-specialty care through its network of regional specialists.
Both Dr. Duffy and Dr. Brigidi co-direct a culinary medicine course at the Perelman School of Medicine. Dr. Duffy co-founded the Culinary Medicine program at Perelman and has taught plant-based nutrition to medical students, colleagues, and the public. Dr. Brigidi brings a personal passion for cooking and gardening to her clinical approach. Together, they weave food and lifestyle science directly into patient care.
The practice sits at 161 Washington Street, Suite 1500, in Conshohocken, PA 19428. The office offers views of the Schuylkill River and convenient access to Center City Philadelphia. com.
MD² Philadelphia maintains affiliations with Penn Medicine, Pennsylvania Hospital, and Chester County Hospital. These relationships give both physicians direct access to leading specialists and inpatient resources across the greater Philadelphia region.
Prospective patients can inquire directly through the practice. com to start a conversation. Given the 50-family limit per physician, the practice encourages interested patients to reach out early.
Practice last updated March 21, 2026
