LO
41 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. O'brien, Anatomic Pathologist & Clinical Pathologist in Los Angeles, CA?
Dr. Lauren O'brien, MD is an Anatomic Pathologist & Clinical Pathologist, who primarily practices in Los Angeles, CA with 1 additional practice location. She has been practicing for over 41 years and is board certified. Dr. O'brien completed her residency at Long Beach Mem Med Ctr, Blood Banking/Transfusion Medicine; Ucla Med Ctr, Anatomic And Clinical Pathology. Dr. O'brien is fluent in English, and is currently seeing new patients. Dr. O'brien’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. O'brien’s office at (323) 442-2582.
Where did Dr. O'brien go to medical school and complete their residency?
Residency: Long Beach Mem Med Ctr, Blood Banking/Transfusion Medicine; Ucla Med Ctr, Anatomic And Clinical Pathology
Is Dr. O'brien board certified as an Anatomic Pathologist & Clinical Pathologist?
Yes, Dr. Lauren O'brien, MD is board certified by the American Board of Pathology
What languages does Dr. O'brien speak?
Dr. O'brien and their clinical team can communicate with patients in the following languages:
English
What conditions does an Anatomic Pathologist & Clinical Pathologist like Dr. O'brien typically treat?
As an Anatomic Pathologist & Clinical Pathologist, Dr. O'brien diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. O'brien. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Other Pre-Procedure Examination
- Various pre-op checks
- Miscellaneous pre-surgery exams
- Other pre-treatment assessments
ICD-10 Codes:
- Z01818: Encounter for other preprocedural examination
Also known as:
- Anemia from Sudden Blood Loss
- Anemia
- Acute Blood Loss Anemia
- Post-Hemorrhagic Anemia
- Low Red Blood Cell Count
- Low Hemoglobin
- Iron deficiency
ICD-10 Codes:
- D62: Acute posthemorrhagic anemia
- D649: Anemia, unspecified
Also known as:
- Acute Myeloid Leukemia
- AML Leukemia
- Acute Myeloblastic Leukemia
- Acute Myelogenous Leukemia
ICD-10 Codes:
- C9200: Acute myeloblastic leukemia, not having achieved remission
Also known as:
- Blood Transfusion Reaction
- Blood Transfusion and Donation
- Transfusion reaction
- Adverse reaction to blood transfusion
- Reaction to blood products
ICD-10 Codes:
- T8092XA: Unspecified transfusion reaction, initial encounter
Also known as:
- End-Stage Kidney Disease
- Kidney Failure
- Chronic Kidney Disease (CKD)
- Helping Your Child Adapt to Life with Chronic Kidney Disease
- ESRD
- End-Stage Renal Failure
ICD-10 Codes:
- N186: End stage renal disease
Also known as:
- Multiple Myeloma
- Plasma Cell Neoplasms (Including Multiple Myeloma) Treatment (PDQ®)
- Active multiple myeloma
- Untreated multiple myeloma
- Plasma cell myeloma
ICD-10 Codes:
- C9000: Multiple myeloma not having achieved remission
What procedures does an Anatomic Pathologist & Clinical Pathologist like Dr. O'brien typically perform?
As an Anatomic Pathologist & Clinical Pathologist, procedures performed by Dr. Lauren O'brien may include:
- Ancillary Testing
- Blood Sample
- Blood Smear
- Blood Sugar / Plasma Glucose Test
- Bone Pathology
- Chemical Pathology Consultation
- Chemical Pathology Follow Up
- Electrolyte Test / PH Imbalance
Please contact Dr. O'brien's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
Does Dr. O'brien accept my insurance?
Dr. O'brien accepts most major insurance plans. Important: Please call our office at (323) 442-2582 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. O'brien accept in Los Angeles, CA?
Dr. O'brien in Los Angeles, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Centene Corporation
City of Los Angeles
CVS Health (formerly Aetna)
Kaiser Permanente
Kern Health Systems
OptumRx Administered Payer
Other Health Care Provider
State of California
UnitedHealth Group
View All Insurances
Where is Dr. O'brien's office located?
Dr. Lauren O'brien's Primary Practice
1516 San Pablo St Ste L3100
Los Angeles, CA 90033
(323) 442-2582
What is Dr. O'brien's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. O'brien's National Provider Identifier (NPI) number is 1689608556.
What common questions do patients ask about Dr. O'brien?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. O'brien
What is Dr. Lauren O'brien's specialty?
Dr. O'brien is a Anatomic Pathologist & Clinical Pathologist near Los Angeles, CA.
What does an Anatomic Pathologist & Clinical Pathologist do?
A pathologist focuses on the causes and nature of diseases, contributing to diagnosis, prognosis, and treatment by applying knowledge from biological, chemical, and physical sciences in the laboratory. They utilize microscopic examinations of tissue specimens, cells, and body fluids, along with clinical laboratory tests on fluids and secretions, to diagnose, exclude, or monitor diseases.
Is this Dr. Lauren O'brien affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. O'brien is affiliated with Uci Medical Center, Pih Health Good Samaritan Hospital, Memorial Hospital Of Gardena, Community Hospital Of Huntington Park, Valley Presbyterian Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see an Anatomic Pathologist & Clinical Pathologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see an Anatomic Pathologist & Clinical Pathologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Lauren O'brien accepting new patients in Los Angeles, CA?
Yes, Dr. Lauren O'brien is accepting new patients at this time.
Does Dr. Lauren O'brien offer online booking?
Please contact Dr. O'brien's office at (323) 442-2582 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Lauren O'brien?
Please contact Dr. O'brien's office at (323) 442-2582 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Lauren O'brien have?
Dr. Lauren O'brien is certified by the American Board of Pathology.
Other Anatomic Pathologist & Clinical Pathologist Near Los Angeles, CA
CT
Anatomic Pathologist & Clinical Pathologist
Dr. Clive Taylor, MD is an Anatomic Pathologist & Clinical Pathologist, who primarily practices in Los Angeles, CA. He has been practicing for over 54 years and is board certified.
Los Angeles, CA
AM
Anatomic Pathologist & Clinical Pathologist
Dr. Anna Mathew, MD is an Anatomic Pathologist & Clinical Pathologist, who primarily practices in Los Angeles, CA with 1 additional practice location.
Los Angeles, CA

Anatomic Pathologist & Clinical Pathologist
Dr. William Wallace, MD is an Anatomic Pathologist & Clinical Pathologist, who primarily practices in Los Angeles, CA with 2 additional practice locations. He is board certified.
Los Angeles, CA