Katherine E. Tierney, MD

Photo of Katherine E. Tierney, MD
{{0}} ratings {{0}} comments
System Error

The information is not available

My specialty:
Obstetrics & Gynecology

My affiliation:
Kaiser Permanente physician

I speak: English

My gender: Female

Where I practice

Skip map Map begins
This information is not available at this time.
This information is not available at this time.
Map ends

About me

I was born and raised in Los Angeles. As an undergraduate, I studied literature and natural sciences, then completed my medical education and training at the University of Southern California in Los Angeles. While at L.A. County Medical Center I chose to pursue a career in women's health and, specifically, training in women's cancer care. I am dedicated to providing top-of-the-line care to my patients, and I believe Kaiser Permanente is the institution that allows me to do so best.

About my practice

Gynecologic oncology is unique in that one doctor provides both the surgical and medical therapy for a patient with cancer. I treat all gynecologic cancers including, but not limited to, those of the uterus, ovaries, and cervix. I specialize in complex pelvic surgery and perform minimally invasive surgery whenever possible. In particular, I am interested in precancerous lesions of the female genital tract, including the cervix and uterus, and have published research on this topic. I am also interested in surgery to address genetic abnormalities such as BRCA 1 and 2 and Lynch syndrome. Ultimately, I strive to provide comprehensive and innovative care to my patients. I practice individualized patient care to ensure that all of my patients receive the best treatment options available and that they feel cared for in the process.

How I thrive

When I’m not working, I enjoy spending time with my husband, 2 daughters, and my extended family. I take great pleasure in watching my children learn and grow. I continue to be an avid reader of both medical and non-medical texts and love listening to live music with friends.

My office

Languages spoken by medical staff

Help is available in your language. Learn more.

My provider type

Physicians and Surgeons

My training, certifications and licensing

Medical school

Keck School of Medicine of the University of Southern California
Los Angeles , CA

Board certification

Gynecologic Oncology

American Board of Obstetrics and Gynecology

Obstetrics and Gynecology

American Board of Obstetrics and Gynecology

Medical training

Chief Resident

Obstetrics and Gynecology

Los Angeles County/University of Southern California
Los Angeles , CA

Fellowship

Gynecologic Oncology

Los Angeles County/University of Southern California
Los Angeles , CA

Internship

Obstetrics and Gynecology

Los Angeles County/University of Southern California
Los Angeles , CA

Residency

Obstetrics and Gynecology

Los Angeles County/University of Southern California
Los Angeles , CA

Joined Permanente Medical Group

2012

Active license information

License number

A110278

License type

Physician and Surgeon

License issuing state

CALIFORNIA

National Provider Identifier (NPI)

1669702502

Cultural Competency Training (CCT)

Pending  

My hospitals

All Kaiser Permanente physicians and podiatrists have admitting privileges or the ability to refer patients to our plan hospitals. Admitting privileges of other providers may vary by plan and facility. Contact your plan administrator for details.

Baldwin Park Medical Center
1011 Baldwin Park Blvd, Baldwin Park, CA 91706

To find a provider's office hours, search our facility directory.

The information in this online directory is updated periodically. The availability of physicians, hospitals, providers, and services may change. Information about a practitioner is provided to us by the practitioner or is obtained as part of the credentialing process. If you have questions, please call us at 1-800-464-4000 (toll free). For the hearing and speech impaired: 1-800-464-4000 (toll free) or TTY 711 (toll free). You can also call the Medical Board of California at 916-263-2382, or visit their website.

We want to speak to you in the language that you’re most comfortable with when you call or visit us. Qualified interpreter services, including sign language, are available at no cost, 24 hours a day, 7 days a week during all hours of operations at all points of contact. We do not encourage the use of family, friends or minors as interpreters. Only the services of interpreters and qualified staff are used to provide language assistance. These may include bilingual providers, staff, and healthcare interpreters. In-person, telephone, video, and alternative modes of communication are available. Learn more about interpreter services

If you would like to report an error in provider or facility information, please contact us.

Medicare Members: To request a hard copy of Kaiser Permanente’s provider directory, please call our Member Services department at 1-800-443-0815, seven days a week, 8 a.m. to 8 p.m. Kaiser Permanente will mail a hard copy of the provider directory to you within three (3) business days of your request. Kaiser Permanente may ask whether your request for a hard copy is a one-time request or if you are requesting to receive the provider directory in hard copy permanently.

If you request it, your request for hard copies of the provider directory remains until you leave Kaiser Permanente or request that hard copies be discontinued.

Medi-Cal Members: This directory includes Kaiser Permanente’s outpatient pharmacies. You can get any drugs covered by Kaiser Permanente at one of these pharmacies. You can get outpatient drugs covered by Medi-Cal at any Medi-Cal Rx Pharmacy. It does not have to be a Kaiser Permanente network pharmacy.  Most Kaiser Permanente network pharmacies are Medi-Cal Rx pharmacies. Your pharmacy can tell you if it is part of the Medi-Cal Rx network. If you want to find a Medi-Cal pharmacy outside of Kaiser Permanente, you can use the Medi-Cal Rx Pharmacy Locator online at www.Medi-CalRx.dhcs.ca.gov. You can also call Medi-Cal Rx Customer Service at 1-800-977-2273, 24 hours a day, 7 days a week (TTY 711 Monday through Friday, 8 a.m. to 5 p.m.).

Medi-Cal Members: Enhanced Care Management and Community Supports services require prior authorization and are limited to members who meet specific eligibility criteria.

Kaiser Permanente enrollees have full and equal access to covered services, including enrollees with disabilities as required under the Federal Americans with Disabilities Act of 1990 and Section 504 of the Rehabilitation Act of 1973.

Kaiser Permanente uses the same quality, member experience, or cost-related measures to select practitioners and facilities in Marketplace Silver-tier plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business. The measures may include, but are not limited to, HEDIS/CAHPS performance, member/patient complaints, patient safety scores, hospital quality measures, and geographic need. Members enrolled in KFHP Marketplace plans have access to all professional, institutional and ancillary health care providers who participate in KFHP plans’ contracted provider network, in accordance with the terms of members’ KFHP plan of coverage. All Kaiser Permanente Medical Group physicians and network physicians are subject to the same quality review processes and certifications.
 
Kaiser Permanente uses the same geographic distribution consideration to select hospitals in Marketplace plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business. Accessibility of medical offices and medical centers in this directory: All Kaiser Permanente facilities are accessible to members.

 

This page was last updated on: 05/29/2026