Summary

Dr. Joseph Grondahl is a family medicine physician with 29 years of experience providing comprehensive care to patients and families. He earned his medical degree from Renaissance School of Medicine at Stony Brook University, building a strong foundation in primary care medicine. His nearly three decades of practice have given him extensive expertise in managing a wide range of health conditions across all age groups.

Dr. Grondahl practices at Kaiser Permanente Walnut Creek Medical Center in Walnut Creek, California, and Kaiser Foundation Hospital in Vallejo, California. He specializes in treating injuries such as cuts, bruises, and broken bones from accidents or trauma. His practice also focuses on preventive care, including adult vaccinations and rabies prevention when needed. Patients rate Dr. Grondahl 5.0 out of 5 stars, reflecting their confidence in his compassionate and thorough approach to family healthcare.

Overview based on verified provider data

Quick Facts

  • 5
  • 29 years of experience
  • THE SCHOOL OF MEDICINE AT STONY BROOK UNIVERSITY MEDICAL CENTER
  • 1 written review
  • 1 specialty
  • 6 areas of expertise
  • 2 hospital affiliations
  • 2 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Joseph Merrill Grondahl has 2 locations

Kaiser Foundation Hospital

975 Sereno DrVallejo, CA 94589

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Dr. Joseph Merrill Grondahl, MDCharles Reppe, PA-CShanekwah Melville, DNP, APRN, FNP-CJennifer Recker, APRN, FNP-BC
Family MedicineFamily MedicineFamily MedicineFamily Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
29 Years of Experience 10 Years of Experience 17 Years of Experience
No Virtual Visit Option No Virtual Visit Option Virtual Visit Available Virtual Visit Available
Speaks English Speaks English, Spanish Speaks English
Walnut Creek , CAOakland , CAHouston , TXChicago , IL
Med School: THE SCHOOL OF MEDICINE AT STONY BROOK UNIVERSITY MEDICAL CENTER
Current Profile
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Insurance Plans Accepted by Dr. Joseph Merrill Grondahl

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Joseph Merrill Grondahl has the following specialty

Specialty Expertise

Dr. Joseph Merrill Grondahl has the following 6 areas of expertise

  • Check-up
  • Contraception
  • Family Planning
  • Immunization
  • Influenza
  • Weight Loss

Certifications, License, & Education

29 Years Experience

Dr. Joseph Merrill Grondahl 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

Medical School

Graduated from THE SCHOOL OF MEDICINE AT STONY BROOK UNIVERSITY MEDICAL CENTER and Renaissance School Of Medicine At Stony Brook University in 1997.

NPI Number

Dr. Grondahl's NPI number is 1073691887.

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Frequently Asked Questions

Where is Dr. Joseph Grondahl's office located?
Dr. Joseph Grondahl's office is located at 1425 S Main St, Walnut Creek, CA, 94596.
Which hospitals is Dr. Joseph Grondahl affiliated with?
Dr. Joseph Grondahl is affiliated with Kaiser Permanente Walnut Creek Medical Center and Kaiser Foundation Hospital.
Does Dr. Joseph Grondahl accept my insurance?
You can see the insurance plans that Dr. Joseph Grondahl accepts on their Vitals profile.
How can I make an appointment with Dr. Joseph Grondahl?
You can find contact information for Dr. Joseph Grondahl here on Vitals.
Does Dr. Joseph Grondahl accept virtual/telehealth appointments?
Dr. Joseph Grondahl has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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