4.4
10 Ratings with 5 written Reviews
Summary
Dr. Justin Mager is an internal medicine physician with 22 years of clinical experience treating adult patients. He earned his medical degree from Jefferson Medical College of Thomas Jefferson University and completed his residency training at California Pacific Medical Center Pacific. His extensive background in internal medicine allows him to provide comprehensive primary care for a wide range of health conditions affecting adults.
Dr. Mager practices at Marinhealth Medical Center in Greenbrae, California, where he focuses on treating joint-related conditions including arthritis pain, joint stiffness, and knee discomfort. His approach to care often incorporates physical therapy and strength training to help patients improve their mobility and function. He also coordinates occupational therapy services when patients need support with daily activities. Patients rate Dr. Mager 4.4 out of 5 stars for his compassionate and thorough approach to internal medicine care.
Dr. Mager practices at Marinhealth Medical Center in Greenbrae, California, where he focuses on treating joint-related conditions including arthritis pain, joint stiffness, and knee discomfort. His approach to care often incorporates physical therapy and strength training to help patients improve their mobility and function. He also coordinates occupational therapy services when patients need support with daily activities. Patients rate Dr. Mager 4.4 out of 5 stars for his compassionate and thorough approach to internal medicine care.
Overview based on verified provider data
Quick Facts
- 22 years of experience
- 12 insurance plans accepted
- California Pacific Medical Center Pacific
- 5 written reviews
- 1 specialty
- 8 areas of expertise
- 1 hospital affiliation
- 1 office location
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Location
Marinhealth Medical Center
599 Sir Francis Drake Boulevard Ste 206Greenbrae, CA 94904 Tel: (415) 925-7000
Compare with Similar Doctors
 |  |  |  |
| Dr. Justin Joseph Mager, MD | Nguyen Nguyen, MD | Larissa Chartrand, MD | Madhav Goyal, MD |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 22 Years of Experience | 10 Years of Experience | 16 Years of Experience | 29 Years of Experience |
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English, Spanish | Speaks English, Spanish | ||
| Greenbrae , CA | Fairfield , CA | Fairfield , CA | Vacaville , CA |
| Med School: Jefferson Medical College Of Thomas Jefferson University | Med School: St Georges University School Of Medicine | Med School: St Matthews University School Of Medicine (Grand Cayman) | Med School: University Of California San Diego School Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Justin Joseph Mager
Medical Specialties
Dr. Justin Joseph Mager has the following specialty
Specialty Expertise
Dr. Justin Joseph Mager has the following 8 areas of expertise
Certifications, License, & Education
22 Years Experience
Dr. Justin Joseph Mager 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 2026.
Education & Training
Residency
Completed their residency at California Pacific Medical Center Pacific.
Medical School
Graduated from Jefferson Medical College Of Thomas Jefferson University in 2006 and Sidney Kimmel Medical College At Thomas Jefferson University in 2004.
NPI Number
Dr. Mager's NPI number is 1669672739.
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Frequently Asked Questions
- Is Dr. Justin Mager accepting new patients?
- Dr. Justin Mager has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Does Dr. Justin Mager accept my insurance?
- You can see the insurance plans that Dr. Justin Mager accepts on their Vitals profile.
- Does Dr. Justin Mager accept virtual/telehealth appointments?
- Dr. Justin Mager has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Which hospitals is Dr. Justin Mager affiliated with?
- Dr. Justin Mager is affiliated with Marinhealth Medical Center.
- How can I make an appointment with Dr. Justin Mager?
- You can find contact information for Dr. Justin Mager here on Vitals.
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