Stephanie E. Ossowski, MD

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My specialty:
Hematology And Oncology

My provider affiliation:
Kaiser Permanente physician

I speak: English

My gender: Female

Where I practice

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About me

Welcome! I often go by “Dr. O.” Thank you for the opportunity to share my professional background and additional information about myself. Establishing trust and comfort with your personal physician is essential, and I hope this page serves as a helpful introduction.

 

Biography

 

Originally from Phoenix, Arizona, I moved to San Antonio, Texas, to pursue my medical education at UTHSCSA, where I earned a dual degree in medicine and public health. During medical school, I developed a strong interest in oncology, hematology, global health, and quality improvement. I completed my internal medicine residency at Loma Linda University, where I continued to cultivate these interests. I was first introduced to Kaiser Permanente during my hematology/oncology fellowship in San Francisco, where I had the opportunity to advance care through quality improvement initiatives. Experiencing Kaiser Permanente’s approach to medicine inspired me to continue my professional journey within the organization

 

About my practice

 

As a dedicated and detail-oriented physician, I approach member care with a strong work ethic and a commitment to excellence. Guided by a deep sense of responsibility and compassion, I strive to provide thoughtful, personalized care to each member. My clinical focus includes the treatment of lung cancer, skin cancer, breast cancer, and both benign and malignant hematologic disorders. In addition to my clinical responsibilities, I help manage and guide the hematology and oncology clinical trials program at Kaiser Permanente San Diego. My perfectionist nature motivates me to stay current with advances in oncology and hematology to ensure members receive informed and effective care.

 

How I thrive

 

Outside of work, I strive to maintain a healthy and balanced lifestyle. I enjoy sharing healthy meals and exploring new restaurants with my husband and family. Staying active is important to me — I regularly hike, run, and practice yoga. I also value spending meaningful time with loved ones, especially during celebrations of family milestones and achievements. Reading a good book or watching a movie are two of my favorite ways to unwind and recharge. These activities help me stay grounded and bring renewed energy to my professional life.

My office

Languages spoken by medical staff

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My provider type

Physicians and Surgeons

My training, certifications and licensing

Medical school

University of Texas Health Science Center at San Antonio, School of Medicine
San Antonio , TX

Board certification

Hematology

American Board of Internal Medicine

Internal Medicine

American Board of Internal Medicine

Medical Oncology

American Board of Internal Medicine

Medical training

Fellowship

Hematology and Oncology

Kaiser Foundation Hospital
San Francisco , CA

Internship

Internal Medicine

Loma Linda University Medical Center
Loma Linda , CA

Residency

Internal Medicine

Loma Linda University Medical Center
Loma Linda , CA

Joined Permanente Medical Group

2022

Active license information

License number

A150580

License type

Physician and Surgeon

License issuing state

CALIFORNIA

National Provider Identifier (NPI)

1417301482

Cultural Competency Training (CCT)

Completed  

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.

KP San Diego Medical Center
9455 Clairemont Mesa Blvd, San Diego, CA 92123
KP San Marcos Medical Center
360 Rush Dr, San Marcos, CA 92078
KP Zion Medical Center
4647 Zion Ave, San Diego, CA 92120

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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: 12/30/2025