Highly recommend Steve Chan in Oakland:
https://www.meetup.com/XYD-Meetup/events/rxlnbpyxhbjb/This is a group that emphasizes using training methods from Chen style Taijiquan and Xinyi Dao to improve health, strength, agility and vitality. Training will revolve around solo and partner methods that develop, test and apply internal strength which are the foundation for Taijiquan, Xingyiquan, Baguazhang and Aikido. As a foundation of internal strength is developed, basic line drills, partner training and short forms will be introduced from Xinyi, Bagua and Chen Taijiquan to deepen student's understanding of how to exercise internal strength to promote strength, agility and vitality.
Steve is an excellent, rigorous, and knowledgeable instructor.