Pediatric Subspecialty Faculty, Inc.


To nurture, advance and protect the health and well-being of children by sustaining an exceptional faculty.


To be the leading faculty for children’s health by providing exceptional and innovative care.


  • Excellence – Setting and achieving the highest standards in all we do including clinical programs & research
  • Innovation – Advancing children’s healthcare by leading with new ideas and technology
  • Service – Delivering unmatched personal experience
  • Collaboration – Working together with our colleagues and partners to achieve our mission
  • Compassion – Caring with sensitivity and respect
  • Accountability / Integrity – Serving as dedicated stewards of the lives and program resources entrusted to us


We first formed in 1975 as the CHOC Private Practice Plan. In 1984, we became the CHOC Subspecialty Medical Group. In 1992, we changed our name to CHOC Pediatric Subspecialty Faculty with over 30 physicians. Today, we have over 400 practitioners comprised of physicians and allied health professionals. We are dedicated to providing the same superior level of care to our patients and families that we expect for our own children. Compassion, quality and dedication are core essentials of our practice as we aspire to provide the optimal environment for pediatric subspecialty care.

We have partnered with CHOC on its journey to excellence and the regionalization of specialized pediatric care as a collaborative team of pediatric subspecialists with supportive staff of wide-ranging pediatric professionals including play therapists, nutrition experts, counselors, and nurses. These highly trained healthcare providers strive each day to fulfill our mission to advance the health and well-being of children through excellence in clinical care, education, leadership, and research. We equally strive for our physician wellness and work-life balance.

We provide a unique resource to the community through teaching and training residents along with pediatric subspecialty fellows. The collective scholarship of our faculty includes a remarkable record of research and publishing and a national reputation as a leading pediatric and neonatal training site. Many of our physicians have had our own children treated at CHOC. We are proud to be able to deliver this level of outstanding care to the children and families whose lives we touch.


The PSF is incorporated. Physicians are awarded shares based on seniority with a maximum of 1,000 for any single physician. Shares/votes are utilized to ratify divisional and PSF wide decisions. PSF is a democratic organization, and the number of shares an individual has translates to the number of votes they have.  There is an elected BOD (Board of Directors) with 11 voting physician members, each serving a 2-year term with staggered reelection of half of the members each year.

Divisions have autonomy for finances, call schedule, and clinical operations of the Division etc. There is no cross subsidization between divisions. The Division Chiefs are evaluated annually by Divisional members and appointed/reappointed annually by the BOD. Any shareholder may review divisional finances, and upon request all corporate documents of any type are available for review.

The BOD sets policy with approval of the shareholders and provides an oversight function to ensure all details of any contractual obligation have been reviewed and occasionally to assist in resolving divisional issues that are brought to the BOD’s attention. Core documents of the PSF are the By-Laws, the individual Physician Employment Agreements, and the Physician Service Agreement with the CHOC Foundation. PSF entered the medical foundation model with CHOC in 2011.

CHOC Children’s Specialists are the PSF physicians of the CHOC Medical Foundation (CMF). PSF provides physician and extender clinical care for CMF. Funding of all programs is determined through the PSA with CMF. The Joint Partnership Council is the CMF shared governance structure between PSF and CHOC. CS Staff work with PSF Staff on administration.

PSF Board of Directors

Sameer Pathare, MD
PSF President &
Division Chief

Gurpreet Ahuja, MD
Board VP of Surgery &
Division Chief

Nita Doshi, MD
Board VP of Medicine
& Cardiology Division

Kushal Bhakta, MD
Board Treasurer
& Neonatology Division

Neal Nakra, MD
Board Secretary &
Division Chief

Vijay Dhar, MD
PSF Past President &
Division Chief

Paul Lubinsky, MD
PSF Past President
& Critical Care Division

Diane Nugent, MD
Division Chief

Susan Gage, MD
Pulmonology Division

Mustafa Kabeer, MD
Pediatric & Thoracic
Surgery Division

Delma Nieves, MD
Infectious Disease Division

PSF Administration

Robert McCann
Chief Administrative
Officer, PSF

Brittney Hoover
Assistant Director, PSF

Hilda Williams
Assistant, PSF

Key Achievements & Attributes

PSF has made significant contributions to the well-being of children in Orange County and offers the following attributes:

  • One of the largest Pediatric groups with 400 medical professionals and 24 clinical subspecialties.
  • The largest independent Neonatology network in California. Currently managing 300+ beds.
  • Continues to provide care to approximately 95% of all CHOC patients.
  • 400+ research and publications to date

PSF Divisions

  • Allergy & Immunology
  • Cardiology
  • Cardiothoracic Surgery
  • Critical Care
  • Endocrinology
  • Gastroenterology
  • Hematology
  • Hospitalist
  • Infectious Disease
  • Interventional Radiology
  • Metabolic Disorders
  • Neonatology
  • Nephrology
  • Neurology
  • Neurosurgery
  • Neurodevelopmental Medicine
  • Oncology
  • Ophthalmology
  • Otolaryngology
  • Pediatric General & Thoracic Surgery
  • Palliative Care
  • Physiatry / Psychology
  • Psychiatry
  • Pulmonology
  • Rheumatology

Location of the Pediatric Subspecialty Faculty (PSF) Administration Office

CHOC Commerce Building, 12th Floor
505 South Main Street, Orange, CA 92868

Contact PSF Administration

Hilda Williams, PSF Administrative Assistant – 714-509-3408
Brittney Hoover, PSF Assistant Director – 714-509-8948