Dr. Mark D. Shields
Dr. Mark D. Shields
Last updated: Nov 28, 2025

Dr. Mark D. Shields

  • Gender: Male
  • Experience: 29 years
  • Graduated from: University Of California, Geffen School Of Medicine
  • Graduation year: 1992
  • Sole propriator: No
  • NPI: 1366411555

Dr. Mark D. Shields MD

Internist

He is located at 24221 Calle De La Louisa Suite 200 in Laguna Hills, CA 92653. Can help patients with the following: Abdominal Pain, Atherosclerosis, Headache, High Blood Pressure, Migraine, Obesity. His National Provider Identifier (NPI) number is 1366411555. Appointment can be made via the phone number (949) 588-8700. He is affiliated with 1 practices and 1 hospitals.

Conditions treated

Dr. Mark D. Shields, being an internist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Mark D. Shields.

  • Abdominal Pain
  • Acute Pain
  • Anemia
  • Arthritis
  • Asthma
  • Atherosclerosis
  • Bladder Control
  • Chest Pain
  • Cholecystitis
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Common Cold
  • Constipation
  • Cystitis
  • Diarrhea
  • Edema
  • Fever
  • Gastroesophageal Reflux Disease (GERD)
  • General Care
  • Headache
  • Heart Disease
  • Hiatal Hernia
  • High Blood Pressure
  • Hot Flashes
  • Hyperlipidemia
  • Hyponatremia
  • Influenza
  • Inguinal Hernia
  • Migraine
  • Nausea and Vomiting
  • Obesity
  • Osteoporosis
  • Peptic Ulcer
  • Prescription Refill
  • Urethritis
  • Urinary Tract Infection (UTI)

Procedures Performed by Dr. Mark D. Shields

Medicare Enrollment

Dr. Mark D. Shields is enrolled to bill Medicare as a Practitioner - Internal Medicine .

Bills through: Healthcare Partners Affiliates Medical Group

Based on Medicare's public enrollment records as of Sep 29, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.

Payments received

Drug payment

Janssen $625
Merck $450
Astellas Pharma $429

Other

Food and Beverage $3619

Studies

UNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE

Graduated in 1992

Affiliated practices

Saddleback Medical Group
24221 Calle DE LA Louisa
Laguna Hills, 92653 CA
(949) 465-8155

Affiliated hospitals

SADDLEBACK MEMORIAL MEDICAL CENTER
24451 HEALTH CENTER DRIVE
LAGUNA HILLS, 92653 CA
(949) 837-4500

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Dr. Nathaniel Dat Ho
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Questions & Answers

What conditions does Dr. Mark D. Shields treat?

Dr. Mark D. Shields provides treatment for Abdominal Pain, Atherosclerosis, Headache, High Blood Pressure, Migraine, Obesity. For the full list see this list.

Where can you meet with Dr. Mark D. Shields?

Dr. Mark D. Shields's office is located at 24221 Calle De La Louisa Suite 200 in Laguna Hills, CA 92653.

Has Dr. Mark D. Shields affiliation with hospitals?

Dr. Mark D. Shields is affiliated with SADDLEBACK MEMORIAL MEDICAL CENTER.

Does Dr. Mark D. Shields have affiliation with practices?

Dr. Mark D. Shields is affiliated with Saddleback Medical Group.