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Summary
Dr. Karisa Thayer specializes in internal medicine, focusing on comprehensive adult healthcare. She earned her medical degree from Loma Linda University School of Medicine and completed her residency at USC Women's & Children's Hospital. With 12 years of experience in practice, Dr. Thayer brings extensive knowledge to her patient care.
Dr. Thayer practices at San Ysidro Health Center in National City, California, and maintains affiliations with several respected hospitals including Keck Hospital of USC, Paradise Valley Hospital, USC Norris Comprehensive Cancer Center, and Memorial Hospital of Gardena. She treats patients with high blood pressure and type 2 diabetes, as well as providing pediatric hypertension care. Her practice includes routine blood testing and substance use disorder screening, and she administers flu vaccines to help keep patients healthy throughout the year.
Dr. Thayer practices at San Ysidro Health Center in National City, California, and maintains affiliations with several respected hospitals including Keck Hospital of USC, Paradise Valley Hospital, USC Norris Comprehensive Cancer Center, and Memorial Hospital of Gardena. She treats patients with high blood pressure and type 2 diabetes, as well as providing pediatric hypertension care. Her practice includes routine blood testing and substance use disorder screening, and she administers flu vaccines to help keep patients healthy throughout the year.
Overview based on verified provider data
Quick Facts
- accepting new patients
- 12 years of experience
- 46 insurance plans accepted
- Usc Womens & Childrens Hospital
- 1 specialty
- 5 areas of expertise
- 4 hospital affiliations
- 1 office location
- Female
Office Location
Compare with Similar Doctors
 |  |  |  |
| Karisa Fern Thayer | Eric Harker | 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 | Accepts New Patients |
| 12 Years of Experience | 25 Years of Experience | 5 Years of Experience | 12 Years of Experience |
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English | Speaks English, Spanish, Yoruba, French, Russian, Arabic, Chinese, Chinese (Mandarin) | Speaks English, Tamil | |
| National City , CA | Lyons , CO | Mesquite , TX | Palo Alto , CA |
| Med School: Loma Linda University School Of Medicine | Med School: Duke University School Of 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 Karisa Fern Thayer
Medical Specialties
Karisa Fern Thayer has the following specialty
Specialty Expertise
Karisa Fern Thayer has the following 5 areas of expertise
Certifications, License, & Education
12 Years Experience
Karisa Fern Thayer 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 Usc Womens & Childrens Hospital.
Medical School
Graduated from Loma Linda University School Of Medicine in 2014.
NPI Number
Karisa Fern Thayer's NPI number is 1558765941.
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Frequently Asked Questions
- Is Karisa Thayer accepting new patients?
- Karisa Thayer is accepting new patients on Vitals. View Karisa Thayer's profile on Vitals to make an appointment.
- Does Karisa Thayer accept virtual/telehealth appointments?
- Karisa Thayer has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Which hospitals is Karisa Thayer affiliated with?
- Karisa Thayer is affiliated with Keck Hospital Of Usc, Paradise Valley Hospital, Usc Norris Comprehensive Cancer Center, and MEMORIAL HOSPITAL OF GARDENA.
- Does Karisa Thayer accept my insurance?
- You can see the insurance plans that Karisa Thayer accepts on their Vitals profile.
- Where is Karisa Thayer's office located?
- Karisa Thayer's office is located at 330 E 8th St, National City, CA, 91950.
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