0 reviews
Summary
Dr. Thomas Twaddell is a board-certified physician specializing in internal medicine and gastroenterology. He earned his medical degree from the prestigious Perelman School of Medicine at the University of Pennsylvania. With an impressive 63 years of clinical experience, Dr. Twaddell has dedicated his career to providing comprehensive care for patients with digestive disorders and general medical conditions.
Dr. Twaddell practices in San Francisco, California, where he has built his medical practice. His expertise in internal medicine allows him to manage a wide range of adult health conditions, while his gastroenterology training focuses specifically on disorders of the digestive system. The combination of these specialties enables him to provide both primary care services and specialized treatment for complex gastrointestinal conditions.
Dr. Twaddell practices in San Francisco, California, where he has built his medical practice. His expertise in internal medicine allows him to manage a wide range of adult health conditions, while his gastroenterology training focuses specifically on disorders of the digestive system. The combination of these specialties enables him to provide both primary care services and specialized treatment for complex gastrointestinal conditions.
Overview based on verified provider data
Quick Facts
- 63 years of experience
- Perelman School Of Medicine At University Of Pennsylvania
- 3 specialties
- 3 areas of expertise
- 1 office location
- Male
Office Location
Compare with Similar Doctors
 |  |  |  |
| Dr. Thomas P H Twaddell JR. | Dr. Adama Diarra, DO | Dr. Adewumi Bakare DMSc, PA-C | Karthikeyan Viswanathan, DO |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 63 Years of Experience | 14 Years of Experience | 12 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English, French, Bambara | Speaks English, Spanish, Yoruba, French, Russian, Arabic, Chinese, Chinese (Mandarin) | Speaks English, Tamil | |
| San Francisco , CA | Tigard , OR | Mesquite , TX | Palo Alto , CA |
| Med School: Perelman School Of Medicine At University Of Pennsylvania | Med School: Arizona College of Osteopathic Medicine | Med School: University of Lynchburg - DMSc | Med School: Bassett Medical Center - Cooperstown, New York |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Thomas P H Twaddell
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. Thomas P H Twaddell has the following 3 specialties
Specialty Expertise
Dr. Thomas P H Twaddell has the following 3 areas of expertise
Certifications, License, & Education
63 Years Experience
Dr. Thomas P H Twaddell holds an expired medical license in the state of California.
Medical License
Medical Doctor with an expired medical license in the state of California that expired in 2025.
Education & Training
Medical School
Graduated from Perelman School Of Medicine At University Of Pennsylvania in 1963.
NPI Number
Dr. Twaddell's NPI number is 1760751176.
Similar Doctors
Frequently Asked Questions
- Where is Dr. Thomas Twaddell's office located?
- Dr. Thomas Twaddell's office is located at 600 Duncan St, San Francisco, CA, 94131.
- Does Dr. Thomas Twaddell accept my insurance?
- You can see the insurance plans that Dr. Thomas Twaddell accepts on their Vitals profile.
- Does Dr. Thomas Twaddell accept virtual/telehealth appointments?
- Dr. Thomas Twaddell has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Is Dr. Thomas Twaddell accepting new patients?
- Dr. Thomas Twaddell has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- How can I make an appointment with Dr. Thomas Twaddell?
- You can find contact information for Dr. Thomas Twaddell here on Vitals.
Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews
Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.
Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.
Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.
