Douglas Long Nguyen, MD
Gastroenterology Internal Medicine
Douglas Long Nguyen is a Gastroenterology Internal Medicine specialist based in Mission Viejo, CA with over 18 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INTERNAL MEDICINE
Douglas Long Nguyen, MD has been part of the Mission Viejo medical community since 2008 in group practice. He graduated from Cincinnati College of Medicine and Surgery in 2008 and has 18+ years of clinical experience. He regularly sees Medicare patients with high cholesterol, hypertension, and arthritis (per CMS claims data).
Older · 1473dNPPES updated 2022-05-12 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
27799 Medical Center Rd Ste 310, Mission Viejo, CA 92691-6400
How Does This Doctor Compare?
Medicare Patients
313
Unique beneficiaries
Standard volumePrescription Recipients
411
Patients prescribed
Prescriptions Written
1,381
Total claims
Total Medicare drug cost: $3.26M
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
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.
Elevated cholesterol or triglycerides that increase heart disease risk
High blood pressure — a leading risk factor for heart disease and stroke
Joint inflammation causing pain, swelling, and stiffness
A condition where the body cannot properly regulate blood sugar levels
Gradual loss of kidney function over time, often linked to diabetes or hypertension
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
An irregular, often rapid heartbeat that increases the risk of stroke
Conditions affecting emotional state, including depression and bipolar disorder
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$486.2k received from industry
654 transactions reported in 2024 ·Very High tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Douglas Long Nguyen's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2008
Cincinnati College of Medicine and Surgery
Board certified · May 11, 2022
Self-reported via NPPES
18 years in practice
Experienced
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
Cincinnati College of Medicine and Surgery (Class of 2008)
Primary hospital affiliation: Acute Care Hospitals
CMS Certification Number: 210011
View hospital on Medicare Care CompareVirtual Internal Medicine Care With Douglas Long Nguyen
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Douglas Long Nguyen 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. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Douglas Long Nguyen
NPI records show Dr. Nguyen as active with telehealth listed in Mission Viejo, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (949) 364-5090.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Douglas Long Nguyen
Practice Location
27799 Medical Center Rd Ste 310, Mission Viejo, CA 92691-6400
Mailing Address
27799 Medical Center Rd Ste 310, Mission Viejo, CA 92691-6400
This is a provider directory. Contact the office directly to schedule appointments.
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