Scroll down the page for more information about the staff at Pacific Pediatric Cardiology and a list of our hospital affiliations.

Pacific Pediatric Cardiology Doctors

Click on the doctors below to view a brief biography.

Lennis P. Burke, M.D.
Lennis P. Burke, M.D.
Elizabeth R. De Oliveira, M.D.
Elizabeth R. De Oliveira, M.D.
Joseph Ahdoot, M.D.
Joseph Ahdoot, M.D.
John Ho, M.D.
John Ho, M.D.
Irving R. Tessler, M.D.
Irving R. Tessler, M.D.
Jennifer Lo, MD
Jennifer Lo, MD


Our talented staff is here to help!  Please note each location below for our contact information.  For billing inquiries, please contact our billing manager listed below. *Note: Email contacts listed here are NOT for emergency contact. Please call our office to make or change an appointment.

  • Carmen Hayes
    Practice Manager
    626.449.8560 fax
  • Oliva Leon
    Billing Manager
    626.337.8344 fax


  • Adventist Health Glendale

  • Adventist Health White Memorial

  • Beverly Hospital

  • California Hospital Medical Center

  • Children’s Hospital Los Angeles
  • Chino Valley Medical Center

  • City of Hope

  • Garfield Medical Center

  • Glendale Memorial Hospital

  • Good Samaritan Hospital

  • Greater El Monte Hospital

  • Huntington Hospital

  • Methodist Hospital

  • Montclair Hospital Medical Center

  • Northridge Hospital Medical Center

  • PIH Health Hospital Downey

  • Presbyterian Intercomunity Hospital

  • Providence St. John’s Health Center

  • Queen of the Valley Hospital (CVMC)

  • Ronald Reagan UCLA Medical Center

  • San Antonio Regional Hospital

  • San Dimas Hospital

  • San Gabriel Medical Center

  • St. Francis Medical Center

  • USC Verdugo Hills Hospital

  • Whittier Hospital


50 Bellefontaine St.
Suite 405
Pasadena, CA 91105
(626) 796-9259
(626) 449-8560 fax

Santa Monica

2001 Santa Monica Blvd.
Suite 483W
Santa Monica, CA 90404
(310) 998-1181
(310) 829-5115 fax

East Los Angeles

1700 Cesar Chavez Ave.
Suite 1300
Los Angeles, CA 90033
(323) 526-2483
(323) 526-4901 fax

West Covina

1135 S. Sunset Ave.
Suite 311
West Covina, CA 91790
(626) 337-8900
(626) 337-8977 fax


10800 Paramount Blvd.
Suite 401

Downey, CA 90241
(562) 247-0907
(562) 450-5030 fax