William Neal Duffy, MD

Internal Medicine

4.9 with 476 ratings

Sees patients age 18 and up

William Neal Duffy, MD

Internal Medicine

4.9 with 476 ratings

Sees patients age 18 and up

Clinical Associate Professor of Medicine (Medicine Affiliates)
Dr. Duffy is a Penn Medicine physician.

Call 610-576-7515 Request Appointment

Meet Dr. Duffy

Recognized by America's Top Doctors 2015 – 2017

Recognized in Philadelphia magazine's annual Top Docs issues 2018 - 2023

Acne
Allergies
Anxiety
Aphthous Ulcers
Arthralgia
Arthritis
Asthma
Athlete's Foot
Back Pain
Bacterial Vaginosis
Bladder Infection (Cystitis)
Blister
Blood Pressure Screening
Bronchitis
Burn Injury
Camp Physicals
Cholesterol Disorders
Chronic Diarrhea
Chronic Disease Management
Cold
Commercial Drivers License Physical (CDLl Physicals)
Conjunctivitis (Pinkeye)
Cough
Depression
Dermatitis
Diabetes
Diarrhea
Dizziness
Dyspepsia (Indigestion)
Ear Infections
Earache
Fever
Flu (Influenza)
Flu Shot Vaccination
Food Allergy
Gonorrhea
Hair Lice
Headache
Health Screening
Heartburn (Gastroesophageal Reflux Disease)
Hepatitis A
Hepatitis A Vaccination
Hepatitis B
Hepatitis B Vaccination
Hepatitis C
Herpes Simplex Virus (HSV)
Hives (Urticaria)
HPV Vaccination
Human Papilloma Virus
Hypertension (High Blood Pressure)
Hypothyroidism (Underactive Thyroid)
Impetigo
Insect Bites and Stings
Meningitis Vaccination
Migraine
Minor Injury
MMR Vaccine
Mouth Ulcer
Multiple Chronic Illnesses
Nasal Congestion
Nausea
Pap Smear
Physical Exams
Pneumonia
Pneumonia Vaccination
Poison Ivy
Poison Oak
Polio Vaccination
Preventive Medicine
Psoriasis
Rash
Respiratory Infections
Rosacea
Scabies
School Physical
Seasonal Allergies
Sexually Transmitted Diseases (STD)
Shingles (Herpes Zoster)
Shingles Vaccination
Sinus Infections (Sinusitis)
Skin Disease
Skin Irritations
Sleep Apnea
Sore Throat
Sports Injury
Sprained Muscle
Stomachache
Strep Throat (Streptococcal Pharyngitis)
Sunburn
Tetanus and Diphtheria Vaccine
Tetanus Diphtheria and Pertussis Vaccine
Thyroid Disorders
Tick-Borne Infections
Tinea Corporis
Tobacco Smoking Counseling
Travelers' Diarrhea
Trichomoniasis
Tuberculosis Testing
Type 2 Diabetes
Typhoid Fever Vaccination
Urinary Tract Infection (UTI)
Vaccines
Vaginal Discharge
Vaginal Yeast Infection
Vomiting
Warts
Weight Problem

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Programs and Centers

Penn Medicine's programs and centers combine doctors from many disciplines to coordinate care from start to finish. Dr. Duffy is part of these programs:

Penn Personalized Care

Board Certification

Internal Medicine, 1996

Education and Training

Medical School: Georgetown University School of Medicine
Residency: Thomas Jefferson University Hospital

Primary Location

Penn Personalized Care - William Duffy, MD

Penn Medicine Valley Forge
1001 Chesterbrook Boulevard
Berwyn, PA 19312

Map Call 610-576-7515

View details

Penn Medicine Hospital Privileges

Hospital of the University of Pennsylvania: On the medical staff, but does not have privileges to treat patients in the hospital.
Pennsylvania Hospital: On the medical staff, but does not have privileges to treat patients in the hospital.

Overall Ratings

out of 5 ; Ratings;

The Patient Satisfaction Rating is an average of all responses to the care provider related question shown above from our internal platform, PMX Feedback. Responses are measured on a scale of 1 to 5 with 5 being the best score. Scores reflect either the most recent 12 months of surveys or the most recent 30 surveys overall. Data is updated monthly and comments remain on the profile for 12 months.

Comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Penn Medicine.

Patients that are treated in outpatient or hospital environments may receive different surveys.

Please contact the practice and/or the member services department of your insurance company for specific details before receiving services. Providers may participate in some, but not all, products offered by a health plan; providers may also accept plans at some practice locations but not others.

Aetna US Healthcare
Centivo Health Plan
Cigna
Cigna HealthSpring
Clover Health Plan
Devon Health Services (Americare)
Gateway Health Plan
Geisinger Health Plan
Geisinger Medicaid
HealthAmerica / HealthAssurance, a Coventry Plan
HealthPartners
HealthPartners Medicare
HealthSmart
Highmark Blue Shield
Homestead Smart Health Plans/Claim Watcher
Horizon Blue Cross Blue Shield of New Jersey
Humana / Choicecare
Humana / Medicare

Imagine Health 360
Independence Blue Cross (Keystone East)
Keystone First
Keystone First Medicare
NJ Qualcare
Oscar Health Plan of PA
Oxford Health Plan
PA Health and Wellness (Centene) Medicare
PA Medicaid
PA Medicare
Provider Partners Health Plan
Rail Road Medicare / Palmetto GBA
Tricare
United Healthcare
UnitedHealthcare Community Plan
US Family Health Plan
Veterans Choice Program

Academic Contact Information

Penn Medicine Valley Forge
1001 Chesterbrook Blvd
Berwyn, PA 19312
Phone: 610-576-7515
Patient appointments: 800-789-7366

American College Of Lifestyle Medicine, National
American College of Physicians, National
National Hockey League Team Physicians Society, National
NFL Physician's Society, National