• Skip to primary navigation
  • Skip to main content
  • Skip to footer
Children's Hospital of Orange County

Children's Hospital of Orange County

Donate
  • I Want To…
    • Find a Doctor
    • Make an Appointment
    • Access CHOC Patient Portal
    • Explore Career Opporunities
    • Estimate My Charges
    • Pay My Bill
    • Request Medical Records
    • Download Vaccine Records
    • Refer a Patient
    • Visit a Patient
    • Connect
    • Volunteer
    • Help
    • I Want To…
      • Find a Doctor
      • Make an Appointment
      • Access CHOC Patient Portal
      • Explore Career Opporunities
      • Estimate My Charges
      • Pay My Bill
      • Request Medical Records
      • Download Vaccine Records
      • Refer a Patient
      • Visit a Patient
      • Connect
      • Volunteer
      • Help
  • Services
    • Primary Care
    • Specialty Care
    • Mental Health
    • Conditions Library
    • All CHOC Services
  • Patients & Families
    • Make an Appointment
    • MyCHOC Patient Portal
    • Pay Your Bill
    • Request Medical Records
    • CHOC Health Hub
  • For Medical Professionals
    • Refer a Patient
    • Care Guidelines
    • Physician Relations
    • Continuing Medical Education
    • Residency and Training Programs
  • Research & Innovation
    • Research Institute
    • Medical Innovation Institute (Mi4)
  • Locations
    • Emergency Departments
    • CHOC Hospital
    • CHOC at Mission Hospital
    • Urgent Care
    • Primary Care Offices
    • Specialty Centers
    • All CHOC Locations
  • About
    • Main Operator: 714-997-3000
    • Customer Care: 714-509-3200
    • Nurse Advice: 1-844-GET-CHOC
    • Contact Us
    • CHOC Foundation
    • Events
    • News Media Resources
  • Find a Doctor
  • Careers
  • Log In
    • MyCHOC
    • MyChart (CHOC Mission)
  • Donate

Questions about your child's health? Call our free 24/7 Nurse Advice Line 844-GET-CHOC.

Home » Medical Staff » Endocrinology » Daniels, Mark W. MD

Dr. Mark W. Daniels, Medical Director, Pediatric Endocrinology

Mark Daniels CHOC Specialists Logo

Mark Daniels, MD

is on staff at
CHOC Hospital Orange

Office Phone:
714-509-8634

Appointments:
888-770-2462

Specialty:
Endocrinology

Board Certified:
Pediatrics, Pediatric Endocrinology

Endocrinology Referrals

Physicians can refer patients to CHOC through our eCeptionist Referral Portal.

Refer a Patient

Dr. Mark Daniels is board certified in Pediatrics and in Pediatric Endocrinology. He is the Division Chief of Endocrinology and Diabetes at CHOC Specialists.

Dr. Daniels completed medical school at Stanford University School of Medicine and fellowship training at the Lucile Salter Packard Children’s Hospital at Stanford.

He has expertise in diagnosis and management of growth, puberty and bone mineral disorders and in the management of diabetes mellitus.

The diabetes education program at CHOC has developed into a comprehensive bilingual program for Type 1 and Type 2 diabetes. This program is committed to provide comprehensive care for children and teens with diabetes and to help them live complete lives with diabetes.

Dr. Daniels is the Division Chief of the Endocrinology and Diabetes Division.

Locations

CHOC Clinic
1201 W. La Veta Ave. Building: CHOC Clinic
Orange, CA 92868
phone: 714-509-8634
fax: 855-246-2329

CHOC Endocrine & Diabetes Center
520 Superior Ave., Suite 160
Newport Beach, CA 92663
phone: 949-631-2062
fax: 877-390-6590

CHOC Health Center – Mission Viejo
26691 Plaza, Suite 130
Mission Viejo, CA 92691

Education

  • Medical School
    Stanford University School of Medicine, Stanford, CA
  • Pediatric Endocrinology Fellowship
    Lucile Salter Packard Children’s Hospital at Stanford, CA
  • Pediatrics Residency
    Lucile Salter Packard Children’s Hospital at Stanford, CA

Academic Appointments

  • Assistant Clinical Professor
    The University of California, Irvine, School of Medicine

Administrative Appointments

  • Medical Director, Endocrinology
    CHOC Specialists

Honors and Awards

  • Physician of Excellence
    OCMA, Multiple years

Publications

Concepcion, JP, Reh CS, Daniels M, Liu X, Paz VP, Ye H, Highland HM, Hanis CL, Greeley SA. Neonatal diabetes, gallbladder agenesis, duodenal atresia, and intestinal malrotation caused by a novel homozygous mutation in RFX6. Pediatr Diabetes. 2014; 15(1); 67-72.

Richard M. Bergenstal, M.D., William V. Tamborlane, M.D., AndrewAhmann, M.D., John B. Buse, M.D., Ph.D., George Dailey, M.D., Stephen N. Davis, M.D., Carol Joyce, M.D., Tim Peoples, M.A., Bruce A. Perkins,M.D., M.P.H., John B. Welsh, MD., Ph.D., Steven M. Willi, M.D.,Michael A. Wood, M.D., for the STAR 3 Study Group including M.Daniels, J. Krantz, H. Speer and J. Less. Effectiveness of sensor-augmentedInsulin-Pump Therapy in Type I Diabetes. New England Journal ofMedicine. Published at www.nejm.org June 29, 2010(10.1 056/NEJMoal 002853).

H. Peter Chase, Ellen Lescheck, Lisa Rafkin-Mervis, Heidi KrauseSteinrauf, Sonia Chritton, Smita M. Asare, Sara Adams, Jay S. Skyler, Michael Clare-Salzler and M. Daniels, H. Speer and the Type I Diabetes TrialNet NIP Study Group. Nutritional Intervention to Prevent (NIP) Type I Diabetes A Pilot Trial ICAN: Infant, Child, & Adolescent Nutrition 2009; I; 98.

 

Our endocrinologists commonly treat:
  • Type 1 Diabetes
  • Growth Disorders
  • Thyroid Disorders
  • Obesity
  • Puberty Disorders
  • Adrenal Disorders
  • Pituitary Disorders
  • Calcium and Bone Disorders
  • Intersex Conditions
  • Reproductive Disorders

Videos

When a Child or Teen has Turner Syndrome
When a Child or Teen has Turner Syndrome

Pediatric endocrinologist Dr. Mark Daniels explains Turner Syndrome in children and teens and how it is treated.

When a Child or Teen has Klinefelter Syndrome
When a Child or Teen has Klinefelter Syndrome

Pediatric endocrinologist Dr. Mark Daniels explains Klinefelter syndrome in children and teens and how it is treated.

Understanding Gender Dysphoria in Children and Teens
Understanding Gender Dysphoria in Children and Teens

Pediatric endocrinologist Dr. Mark Daniels explains how to identify and understand gender dysphoria (formerly called gender disorder) in children and teens.

Health Stories

‘Type 1 diabetes is a part of who I am’: Hamza’s Story

Diabetes

‘Type 1 diabetes is a part of who I am’: Hamza’s Story

With help from CHOC, Hamza’s learned how to manage his Type 1 diabetes and still enjoys his favorite foods and activities.

CHOC Logo Icon CHOC Health

From CHOC patient to CHOC donor: Katrina’s story

Diabetes

From CHOC patient to CHOC donor: Katrina’s story

Katrina was treated for type 1 diabetes at CHOC throughout her childhood. Now an adult, she’s fighting to find a cure.

CHOC Logo Icon CHOC Health

1201 W La Veta Ave
Orange, CA 92868

(714) 997-3000

CHOC is affiiliated with

CHOC Links

  • Contact Us
  • Directions
  • Locations
  • News Media Resources
  • Careers
  • Giving

I Want To…

  • Find a Doctor
  • Refer a Patient
  • Pay My Bill
  • Request Medical Records
  • MyCHOC Patient Portal
  • Volunteer

Legal

  • Patient Rights and Responsibilities
  • Notice of Privacy Practices
  • Notice of Nondiscrimination
  • Language Assistance
  • Pricing Transparency
  • Privacy Policy
Choco Wave
  • US News and World Report
  • The Joint Commission
  • California Awards
  • Magnet Recognized
  • Charity Navigator

Language Assistance:

  • Español
  • 繁體中文
  • Tiếng Việt
  • Tagalog
  • 한국어
  • Հայերեն
  • فارسی
  • Русский
  • 日本語
  • العربية
  • ਪੰਜਾਬੀ
  • ខ្មែរ
  • Hmoob
  • हिंदी
  • ภาษาไทย
  • Facebook
  • Twitter
  • Pinterest
  • Instagram
  • LinkedIn
  • YouTube

©2025 CHOC, A 501(c)(3) Organization