NOTICE: Office Closing May 15th 2020

Home / Doctors / Infectious Disease / Ronald B. Wasserman MD

Ronald B. Wasserman

MD

Cardiology & Internal Medicine
Infectious Disease
Antioch office
Sinus Center office
925-947-5889
Walnut Creek office
Internal Medicine office
Texting appointment line: 925-395-4023
Currently Not Accepting New Patients
Currently Not Accepting New Patients
Currently Not Accepting New Patients
Currently Not Accepting New Patients

Main Office

365 Lennon Lane Suite 200 Walnut Creek, CA 94598
2400 Balfour Road Suite 300
Brentwood, CA 94513

Affiliations

Sutter Delta Medical Center
John Muir Health Concord Medical Center
John Muir Health Walnut Creek Medical Center

Sub-specialties

About

I am fortunate to have landed in Contra Costa County in 1992 after finishing my Internal Medicine and Infectious Diseases Subspecialty in the UCLA Health System. I joined an outstanding mentor and together we developed into a team of 8 physicians dedicated to all aspects of Infectious Diseases management. We provide inpatient ID expertise as well as the only robust outpatient infectious diseases program that is not academically based or Kaiser-based in San Francisco Bay Area. We pioneered the concept of Antibiotic Stewardship with a formalized program within the John Muir Health System that has been in effect since 2010. We joined BASS Medical Group in 2015. Over the past 3 decades, I have published in peer-reviewed journals in fields of Viral Hepatitis, Infection Prevention, Quality Management, and Anti-infectives. I have enjoyed roles as Infection Prevention Director at John Muir Medical Center and President of East Bay Infectious Diseases Society. On a national and statewide level, I have worked on the Clinical Affairs Committee of Infectious Diseases Society of America and served on the Board Member of Infectious Diseases Association of California. I presently am co-managing partner for the Infectious Diseases Division of BASS Medical Group and preside on the Board of Directors for BASS Medical Group. I am blessed to have a wonderful family of 2 grown daughters, a son-in-law and a wife all with academic pursuits. I enjoy whatever type of daily physical activity that time, my joints and COVID-19 allow. Other than Infectious Diseases, I consider myself an amateur at everything else but especially enjoy a well written book on geology.

Dr. Audrey "Lisa" Arzamendi is double board-certified in internal medicine and endocrinology. Since 2012, she has specialized in diabetes, obesity and metabolism, thyroid disease (including Hashimoto's and Graves'), polycystic ovary syndrome (PCOS) and sex hormone disorders, adrenal and pituitary dysfunction, osteoporosis, parathyroid/calcium disorders, and thyroid and parathyroid nodules and cancers. She is highly trained in ultrasound-guided fine-needle aspiration (FNA) biopsy of the thyroid (99% diagnostic rate).

Dr. Arzamendi is committed to safe and established medical treatments, and prides herself on staying informed about emerging therapies and research-supported non-prescription options. She is experienced working with all forms of brand-name and generic thyroid medications, and as a type 1 diabetic herself, has first-hand knowledge of nearly all available prescription and technological diabetic treatments, to best support patients in selecting their optimal diabetes treatment regimens.

Dr. Arzamendi graduated with honors from Stanford University, with a BA in Human Biology and a concentration in Health & Human Performance.  She attended UC San Diego School of Medicine (receiving a federal NIH National Cancer Institute fellowship), and completed her internal medicine residency at Kaiser Pemanente’s Santa Clara Medical Center.  Her endocrinology training was completed at UC Davis Medical Center. She previously practiced in California's South Bay before relocating to open her practice in Walnut Creek in 2020. Dr. Arzamendi was a Stanford varsity athlete and still enjoys running, hiking, tennis, rowing, and other outdoor activities. She loves spending time with her husband and many pets, and looks forward to being your doctor!

Conditions Treated

  • Alternative and second opinions in surgical and non surgical conditions
  • Anal Abscess/Fistula
  • Anal Cancer
  • Anal Fissure
  • Anal Incontinence
  • Anal Warts
  • Anorectal Bleeding
  • Colonoscopy
  • Colon Cancer
  • Colorectal Cancer
  • Colorectal Cancer Screening
  • Colorectal Cancer Surgery
  • Constipation
  • Crohn's Disease
  • Diverticular Disease
  • Hemorrhoids
  • Inflammatory Bowel Disease
  • Ostomy
  • Pilonidal Disease
  • Polyps of the Colon & Rectum 
  • Pruritis - ani / anal itching 
  • Rectal Prolapse
  • Rectocele
  • Rectal Cancer
  • Ulcerative Colitis

Conditions Treated

  • Alternative and second opinions in surgical and non surgical conditions
  • Anal Abscess/Fistula
  • Anal Cancer
  • Anal Fissure
  • Anal Incontinence
  • Anal Warts
  • Anorectal Bleeding
  • Colonoscopy
  • Colon Cancer
  • Colorectal Cancer
  • Colorectal Cancer Screening
  • Colorectal Cancer Surgery
  • Constipation
  • Crohn's Disease
  • Diverticular Disease
  • Hemorrhoids
  • Inflammatory Bowel Disease
  • Ostomy
  • Pilonidal Disease
  • Polyps of the Colon & Rectum 
  • Pruritis - ani / anal itching 
  • Rectal Prolapse
  • Rectocele
  • Rectal Cancer
  • Ulcerative Colitis

Conditions Treated

  • Alternative and second opinions in surgical and non surgical conditions
  • Anal Abscess/Fistula
  • Anal Cancer
  • Anal Fissure
  • Anal Incontinence
  • Anal Warts
  • Anorectal Bleeding
  • Colonoscopy
  • Colon Cancer
  • Colorectal Cancer
  • Colorectal Cancer Screening
  • Colorectal Cancer Surgery
  • Constipation
  • Crohn's Disease
  • Diverticular Disease
  • Hemorrhoids
  • Inflammatory Bowel Disease
  • Ostomy
  • Pilonidal Disease
  • Polyps of the Colon & Rectum 
  • Pruritis - ani / anal itching 
  • Rectal Prolapse
  • Rectocele
  • Rectal Cancer
  • Ulcerative Colitis

Education

Medical: University of California at San Diego
Internship: University of California Los Angeles
Residency: University of California Los Angeles
Fellowship: Harbor-UCLA Medical Center in West Carson, California

Media

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Main Office

365 Lennon Lane Suite 200 Walnut Creek, CA 94598

Affiliations

Sutter Delta Medical Center
John Muir Health Concord Medical Center
John Muir Health Walnut Creek Medical Center

Sub-specialties

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