Are you Dr. Nguyen? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileWhere to find Duc Nguyen, MD
- Santa Ana location main office
2621 S Bristol St, #7, Santa Ana, CA 92704 - Simi Valley location
1177 Roadrunner Way, Simi Valley, CA 93065
About Dr. Nguyen
Duc Nguyen, MD practices internal medicine in Santa Ana, CA. Duc is a 1989 graduate of University of California, Irvine, California College of Medicine. Medicare claims data shows Duc provided 7,253 services to 2,063 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, and test for allergy using allergenic extract. The provider's National Provider Identifier (NPI) is 1306945365.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (805) 520-1577
- Email not available
Practice Locations
2621 S BRISTOL ST #7
Santa Ana, CA 92704
1177 Roadrunner Way
Simi Valley, CA 93065
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
- Anemia
Brain & Nerves
Brain and nerves
- Vertigo
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
- Medication management
- Post-hospital transitional care
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
Exams & Consultations
Heart & Circulation
Heart health
- Cardiac Stress Test Referral
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
Lab tests
- Urinalysis
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Minor procedures
Office procedures
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
Preventive & Routine Care
Screenings & Diagnostics
- Bone Density Scan Referral
- Diabetes Screening and A1C Test
Sexual health
- STI Testing
Procedures Most Often Billed to Medicare
7,253 services · 2,063 patients · 21 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
29 | As often as other peers in Internal Medicine |
| Emergent insertion of breathing tube into windpipe using an endoscope | Procedure | 31500 |
12 | Less often than most peers in Internal Medicine |
| Test for allergy using allergenic extract | Treatment | 95004 |
1,040 | As often as other peers in Internal Medicine |
| Influenza vaccine, inactivated | Treatment | 90653 |
146 | More than most peers in Internal Medicine |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
68 | As often as other peers in Internal Medicine |
| Test to measure expiratory airflow and volume changes before and after medication administration | Treatment | 94060 |
36 | As often as other peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
12 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
2,126 | More than most peers in Internal Medicine |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
1,860 | More than most peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
625 | More than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other internists in Santa Ana 6
Same specialty, same city.
Trained at University of California, Irvine, California College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at University of California, Irvine, California College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Nguyen's specialty?
Dr. Nguyen is an internist in Santa Ana, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where can I find Dr. Nguyen?
Dr. Nguyen is listed at 2621 S Bristol St #7, Santa Ana, CA 92704. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Nguyen?
The number on file is (805) 520-1577. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Nguyen?
Dr. Nguyen's National Provider Identifier is 1306945365. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Nguyen's medical education?
Dr. Nguyen attended University of California, Irvine, California College of Medicine, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Nguyen have?
Dr. Nguyen has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Nguyen known for?
According to Medicare billing data, Dr. Nguyen performs procedures including aspiration and/or injection of fluid from large joint and emergent insertion of breathing tube into windpipe using an endoscope; provides treatments such as test for allergy using allergenic extract and influenza vaccine, inactivated, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Nguyen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Nguyen. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.