NOTICE: Office Closing May 15th 2020

Home / Doctors / Sleep Medicine / J. Julian Zaka MD

J. Julian Zaka

MD

Cardiology & Internal Medicine
Sleep Medicine
Antioch office
Sinus Center office
925-944-6355
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

130 La Casa Via Building 2 Suite 208 Walnut Creek, CA 94598
2400 Balfour Road Suite 300
Brentwood, CA 94513

Affiliations

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

Sub-specialties

Pulmonary Disease, Critical Care Medicine

Patient Forms

New Patient Packet

About

Dr. Zaka obtained his medical degree from St. George’s University in 2002. He continued his training at Coney Island Hospital in New York where he completed his internal medicine residency from 2002-2005. He also completed a pulmonary fellowship from 2005-2007 at Coney Island and served as chief fellow. Following his pulmonary fellowship, Dr. Zaka completed a critical care fellowship at The University of Medicine and Dentistry of New Jersey/Cooper University Hospital in Camden, New Jersey. He then entered private practice in Pittsburgh, Pennsylvania, from 2008-2011. Currently, he practices out of BASS Medical Group’s Walnut Creek office. Dr. Zaka has served as a collaborative reviewer for the Yearbook of Critical Care Medicine and has published in the journal CHEST, as well as The Proceedings of the American Thoracic Society. He is board certified in internal medicine, pulmonary disease, critical care medicine, and sleep medicine. His special medical interests include critical care medicine and pulmonary hypertension. He is known as a knowledgeable physician who has a warm and friendly demeanor. Dr. Zaka lives in Walnut Creek with his wife and son. When not working, he enjoys soccer, basketball and spending time with his family.

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 School: St. George’s University in Grenada, West Indies
Residency: Coney Island Hospital in New York
Fellowship: Coney Island Hospital in New York and University of Medicine and Dentistry of New Jersey/Cooper University Hospital in Camden

Media

For more information about BPH/enlarged prostate and the Urolift procedure, click the banner below:

Main Office

130 La Casa Via Building 2 Suite 208 Walnut Creek, CA 94598

Affiliations

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

Sub-specialties

Pulmonary Disease, Critical Care Medicine

Patient Forms

New Patient Packet

Suffering from BPH?

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