Richmond District Medical Group, Inc.

700 25th Avenue

San Francisco, CA 94121

Tel: 415-751-1446

For Life-Threatening Emergencies Call 911

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Our Providers
Mei-Lai Lucas, MD

Born and raised in Oklahoma City, Mei-Lai did her undergraduate studies at Pepperdine University and then returned home to the University of Oklahoma for Medical School.  She did her Internal Medicine residency at Brown University in Rhode Island before she moved to San Francisco. Mei-Lai has been with RDMG since 1999 and it has been a privilege to be a part of this wonderful practice for so many years.  She is a board certified internist and enjoys seeing patients of all ages and all genders.  She is the proud mother of two and enjoys just about anything:  exercise, food and all forms of entertainment! Mei-Lai is an identical twin and her sister, Mei-Ling Fong Beck, is also an internist.  To read a humorous article of their twin doctor experience, click on the attached link:

Karlee Johnson, PA-C

Karlee hails from Alpine, Utah, and is excited be living in San Francisco with her husband.  She completed her physician assistant degree at Idaho State University where she gained experience with pediatric and adult medicine.  She also has an interest in diagnosing and managing common psychiatric disorders.  Karlee is proficient with urgent care and also with managing chronic illnesses.  Not only is Karlee smart but she is warm and gracious.  She has done extensive volunteer work in the Dominican Republic fitting prosthetics and helping to rehabilitate amputees.   Karlee also was a head gymnastics coach for girls for 9 years.  Not only did she instruct them in gymnastics but she also managed any sports related injuries that occurred.  Karlee enjoys hiking with her husband and is thrilled to explore all the natural beauty in the Bay Area.  We are so excited and so lucky to have Karlee on our team!

Joshua H. Rassen, MD

A native of Boston but with a storied career in San Francisco, Josh possesses the old school charm and grace that makes him so endearing and special.  After completing his undergraduate studies at Harvard Josh attended Washington University School of Medicine.  He moved to San Francisco where he did his residency training at Children's Hospital which is now California Pacific Medical Center (CPMC). Board certified in Internal Medicine and Geriatrics, Josh has held many esteemed positions including President of the SF Medical Society, Head of Internal Medicine at CPMC and Director of Pacifica Nursing Home, to name a few. He is a master horticulturist and he enjoys tending to his gardens and orchards in Sonoma. He also enjoys carpentry work and putting together elaborate puzzles--many of which can be seen at our office!

May Deng, PA-C

May is a third generation San Franciscan who grew up in our neighborhood.  She went to UC Davis for college and continued at the highly competitive UC Davis program for her Physician Assistant degree.  May graduated in 2009 from the UC Davis Family Practice Program and she is a board certified PAC.  Since graduating May has gained expertise in general internal medicine and also women’s health.  She has worked for many years with Dr. Pearl Yee, a highly regarded gynecologist in San Francisco.  May and her husband are the proud parents of three delightful children.  Her hobbies naturally revolve around her young family and include endless exploring of all that San Francisco has to offer.  We are sure you will find her not only intelligent but also warm and engaging. She looks forward to meeting you!

Built in 1950, our medical office has a long tradition of serving patients throughout the Bay Area.  We are located next to major bus routes in the heart of the Richmond District in San Francisco so we are easily accessible by public transportation.  Being one of the few remaining neighborhood private practices in San Francisco, many of our patients will walk to our office.  We have had the privilege of caring for multiple generations of the same family.  As families grow up and move away they remain loyal to our practice, traveling from North Bay, South Bay and East Bay to remain with our medical family.


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Observed Holidays
  • New Year's Day

  • President's Day

  • Memorial Day

  • Independence Day

  • Labor Day

  • Thanksgiving (closed Thurs & Fri)

  • Christmas Day

Our Philosophy

We hope to provide quality healthcare and services in a timely fashion.  If you need a referral to a specialist we will try to pick ones that best serves your needs.  If you need a form completed or a medication ordered then we will also do this as quickly as we can.  We ask that our patients give us at least 2 days notice to provide these services for you.  Our purpose is to serve you but your patience and cooperation are most appreciated.  

Our Office
Our Staff

We take great pride in our extraordinary staff who work very hard to provide our patients the best experience possible. We providers deeply respect our staff and request that our patients do the same. They have hard jobs but it is because of our staff that we are the warm, caring and inviting office that we are.  They are truly the heart and soul of our practice. Their loyalty and commitment is reflected in their years of service (as many as 30 years!). A lot of our patients enjoy the friendships that have been formed over the years with our staff. What a privilege it is to work with this team!