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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
 |  |  |  |
| JR Thomas P H Twaddell | Dr. Tooba Rehman, MD | Eric Harker | Dr. George Mousa, MD |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 63 Years of Experience | 16 Years of Experience | 25 Years of Experience | 17 Years of Experience |
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English | |||
| San Francisco , CA | Katy , TX | Lyons , CO | Upland , CA |
| Med School: Perelman School Of Medicine At University Of Pennsylvania | Med School: CHICAGO MEDICAL SCHOOL AT ROSALIND FRANKLIN UNIVERSITY OF MEDICINE & SCIENCE | Med School: Duke University School Of Medicine | Med School: University Of Aleppo Faculty Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by JR Thomas P H Twaddell
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
JR Thomas P H Twaddell has the following 3 specialties
Specialty Expertise
JR Thomas P H Twaddell has the following 3 areas of expertise
Certifications, License, & Education
63 Years Experience
JR 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
JR Twaddell's NPI number is 1760751176.
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Frequently Asked Questions
- Does JR Thomas P H Twaddell accept virtual/telehealth appointments?
- JR Thomas P H Twaddell has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Where is JR Thomas P H Twaddell's office located?
- JR Thomas P H Twaddell's office is located at 600 Duncan St, San Francisco, CA, 94131.
- How can I make an appointment with JR Thomas P H Twaddell?
- You can find contact information for JR Thomas P H Twaddell here on Vitals.
- Does JR Thomas P H Twaddell accept my insurance?
- You can see the insurance plans that JR Thomas P H Twaddell accepts on their Vitals profile.
- Is JR Thomas P H Twaddell accepting new patients?
- JR Thomas P H Twaddell has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
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