Michael J Santoro, M.D.

Gastroenterology Internal Medicine

Michael J Santoro is a Gastroenterology Internal Medicine specialist based in Mission Viejo, CA with over 39 years of clinical experience. Offers virtual telehealth visits.

(949) 364-5090Mission Viejo, CA
Telehealth Available
NPI Active per CMS — Q2 2026

Michael J Santoro, M.D. has practiced internal medicine for 39+ years, working in group practice. He graduated from State University of New York Downstate Medical Center in 1987 and has 39+ years of clinical experience. Among his Medicare patients, common conditions include high cholesterol, hypertension, and arthritis (per CMS data).

At a glance

  • Uses generic medications more than 70% of reporting doctors in California
  • Virtual visits available — no app or travel required
1 of 847 Internal Medicine providers in CASee all Internal Medicine in Mission Viejo39+ years experienceNPI since 2005

Older · 2034dNPPES updated 2020-10-28 · verify NPI on CMS · Verify license at Medical Board of California

Contact & Location

Practice Location

27871 Medical Center Rd Suite 200, Mission Viejo, CA 92691-6404

Fax: (949) 542-8710
Patient Condition Panel

What This Doctor Treats Most

Based on Medicare claims data — here's what patients commonly see this doctor for

Based on Medicare data, this doctor primarily manages High Cholesterol, Hypertension, and Arthritis.

High Cholesterol
Higher than avg (+5%)75%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↑ More patients than average (+5%) — a focus area for this doctor

Hypertension
Lower than avg (-8%)62%

High blood pressure — a leading risk factor for heart disease and stroke

US avg: 70.2%

↓ Fewer patients than average (-8%) — less common here

Arthritis
Lower than avg (-8%)41%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↓ Fewer patients than average (-8%) — less common here

Ischemic Heart Disease
Lower than avg (-8%)24%

Reduced blood flow to the heart muscle, commonly known as coronary artery disease

US avg: 31.7%

↓ Fewer patients than average (-8%) — less common here

Anxiety Disorders
Lower than avg (-14%)20%

Excessive worry or fear that interferes with daily life

US avg: 34.1%

↓ Fewer patients than average (-14%) — less common here

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Graduated medical school · 1987

    State University of New York Downstate Medical Center

  2. Board certified · Oct 27, 2020

    Self-reported via NPPES

  3. 39 years in practice

    Senior practitioner

Internal MedicineAllopathic & Osteopathic Physicians

Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), inflammatory bowel disease (Crohn's, ulcerative colitis), liver disease, pancreatitis, and colon polyps. They perform endoscopies and colonoscopies.

Taxonomy: 207RG0100X

Education & Training

State University of New York Downstate Medical Center (Class of 1987)

Practice Footprint

Mailing address

27871 Medical Center Rd Ste 240, Mission Viejo, CA 92691-6406

Differs from practice location

Virtual Internal Medicine Care With Michael J Santoro

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Michael J Santoro for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to Mission Viejo required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.

Frequently Asked Questions

Common questions about Michael J Santoro

Dr. Santoro is listed as active in the NPI registry with telehealth listed in Mission Viejo, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (949) 364-5090.

Verified across 4 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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