Red Bluff Family Medicine Providers

Dr. Heshani Abeysundara MD

Heshani Abeysundara, MD

Joined Lassen Medical Clinic:

  • 2018

License And Certifications:

  • Florida Medical Training License Florida Board of Medicine Basic Life Support Advanced Cardiovascular Life Support – June 2015 – present
  • In process – 2017 2017


  • Doctor of Medicine – May 2011 – Dec 2014
  • American University of the Caribbean School of Medicine (AUC), St. Maarten – Sep 2006 – Jun 2010


  • Fung AW, Ebhardt HA, Abeysundara H, Moore J, Xu Z, Fahlman RP. An Alternative mechanism for the catalysis of peptide bond formation by L/F transferase: substrate binding and orientation. Journal of Molecular Biology 2011; 409(4):617-29


Dr. Larry Fish DO

Larry W. Fish, DO

Joined Lassen Medical Clinic:

  • 1993

Board Certified:

  • 1985


  • Doctor of Osteopathy, University of Osteopathic Medicine and Health Services, Des Moines, Iowa, 1983
  • Doctor of Medicine, St. George’s University School of Medicine, Grenada, West Indies, 1979
  • Bachelor of Arts, Biology/Chemistry/Pre-Medical Science, Pella, Iowa, 1978


  • Chicago Osteopathic Medical Center, Chicago, Illinois, 1984-1985
  • Organizations:
  • American Osteopathic Association
  • Osteopathic Physicians and Surgeons of California
  • American College of Osteopathic Family Physicians

View Dr. Fish's profile page.

Dr. Katherine Herring MD


Katherine Herring, MD

Joined Lassen Medical Clinic:

  • January 2018


  • Bachelor of Science, Biology with minor in Chemistry, University of Houston, 1990
  • M.D. Medicine, Texas Tech University Health Sciences Center
  • M.D. Family Medicine Residency Program, The University of Texas Medical Branch at Galveston

Current Associations/Affiliations:

  • American Board of Family Medicine
  • Texas Academy of Family Physician
  • Texas Medical Association

Current And Recent Leadership Roles:

  • OPCO (Operations Company) board member at local hospital
  • UMQM (Utilization Management Quality Management) for major insurance plan
  • Key note physician overseeing four local primary care physicians for major insurance plan
  • Member of IMP (Inpatient Manager) community to manage and reduce admissions
  • Board Member for major advantage plan 

Dr. Dan McDaniel MD


Dan E. McDaniel, MD

Joined Lassen Medical Clinic:

  • 1971

Board Certified:

  • 1965


  • University of California, San Francisco, School of Medicine, San Francisco, California


  • Community Hospital of Sonoma County, Santa Rosa, California

Military Service:

  • US Navy

View Dr. McDaniel's profile page.


Dr. Minh Nguyen


Minh T. Nguyen, DO

I was born and raised in Vietnam. I came to the USA and went to UC Davis for my undergraduate. I met my husband in medical school in Mesa, Arizona and we finished residency together in Pennsylvania. I have done a few mission trips where I became interested in medicine. I enjoyed helping the people in need and I felt that improving one’s well-being and overall health is one of the most important ways to help others and give back to the community. I am interested in Osteopathic medicine, preventative care, women’s health, and office procedures. I want the best for my patients; I will work hard to provide the best care, as I would for my own family. I also hope to participate in more mission trips in the future.

I enjoy spending time with my family, hiking, traveling, baking and cooking. I also take great joy in home renovations and other DIY projects with my husband. 


Maura Buckley


Maura Buckley, PA-C

Joined Lassen Medical Clinic:

  • 2019

Family Medicine experience:

  • Well-versed in many procedures to help keep patients healthy.
  • Sees patients of all ages, helping kids with asthma, adults with COPD and more
  • Assists the doctors at Red Bluff as they work to make patients healthier

Learn More

For more information or to make an appointment with one of Family Medicine doctors, please call 530.527.0414 or contact us.