Welcome to San Dimas Medical Group

100 Old River Road, Bakersfield, CA 93311 | Phone: (661) 663-4800 | Fax: (661) 663–4770

Meet Our Providers

In practice since 1973, San Dimas Medical Group is one of our community's oldest ob/gyn practices,
and is proud to be voted as Kern County's BEST OB/GYN practice.

Dr. Addias Mervin, MD
ADDIAS MERVIN, MD
  • Medical Education:
    Howard University College of Medicine
    Washington DC 2016
  • Residency:
    Howard University Hospital
    Washington DC 2020
  • Languages:
    English
  • In practice since 2020
Dr. Gregory Klis, MD
GREGORY KLIS, MD
  • Medical Education:
    Univ of Minnesota Medical School
    Minneapolis, Minnesota 1992
  • Internship:
    Ob/Gyn
    Butterworth Hospital,
    Grand Rapids, Michigan 1993
  • Residency:
    Ob/Gyn
    Chief Resident
    Butterworth Hospital
    Grand Rapids, Michigan; 1996
  • Languages:
    English
  • In practice since 1996
Dr. Kimberly Walton, MD
KIMBERLY WALTON, MD
  • Medical Education:
    UCLA School of Medicine Los Angeles, CA 1993
  • Residency:
    Jamaica Hospital
    Queens, NY 1999
  • Languages:
    English, Spanish
  • In practice since 1999
Dr. Kristin Chisum, PA-C
KRISTIN CHISUM, PA-C
  • Medical Education:
    Shenandoah University Winchester, VA 2008
  • Board Certification:
    National Commission on Certification of Physician Assistants
  • Languages:
    English
  • In practice since 2009
Dr. Linda Hedges, FNP-C
LINDA HEDGES, FNP-C
  • Medical Education:
    East Tennessee State University Johnson City, TN 2012
  • Board Certification:
    American Nurses Credentialing Center Certification
  • Languages:English
  • In practice since 2012
Dr. Lynn Del Mundo, PA-C
LYNN DEL MUNDO, PA-C
  • Medical Education:
    Western University of Health Science Pomona, CA 2022
  • Board Certification:
    National Commission on Certification of Physician Assistants
  • Languages:
    English
  • In practice since 2022
Dr. Noel Del Mundo, MD
NOEL DEL MUNDO, MD
  • Medical Education:
    Uniformed Services Univ of Health Sciences
    Bethesda, MD 1992
  • Internship:
    Ob/Gyn
    Kern Medical Center
    Bakersfield, CA 1994
  • Residency:
    Ob/Gyn
    Kern Medical Center
    Bakersfield, CA 1996
  • Board Certification:
    American Board of Obstetrics & Gynecology
  • Languages:
    English, Spanish
  • In practice since 1996
Dr. Rhonda Colvin, PA-C
RHONDA COLVIN, PA-C
  • Medical Education:
    Rosalind Franklin University of Medicine and Science
    Chicago, IL 2010
  • Board Certification:
    National Commission on Certification of Physician Assistants
  • Languages:
    English
  • In practice since 2010
Dr. Tillai Kannappan, MD
TILLAI KANNAPPAN, MD
  • Medical Education:
    Univ of Madras
    Tamil Nadu, India 1976
  • Internship:
    Ob/Gyn
    Madras Medical College
    Tamil Nadu, India 1978
  • Residency:
    Ob/Gyn
    Univ of Southern California
    Los Angeles, CA 1993
  • Board Certification:
    Fellow, Royal College of Obstetricians & Gynecologists (RCOG)
  • Languages:
    English, Spanish, Tamil, Hindi, Arabic, Telugu, Malayalam
  • In practice since 1993
Dr. Toni-Ann McEnroe, OB/GYN NP
TONI-ANN McENROE, OB/GYN NP
  • Medical Education:
    Royal North Shore School of Midwifery Sydney, Australia 1982
  • Languages:
    English
  • In practice since 1982