Physician Profile
Diana V. Nguyen, M.D.
Unclaimed ProfileAbout Dr. Nguyen
Diana V. Nguyen, M.D. is a healthcare provider in Dublin, CA specializing in internal medicine. Diana trained at University of California, Geffen School of Medicine, graduating in 2009. According to Medicare claims data, Diana cared for 247 Medicare patients across 329 services. 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, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. This provider record is associated with NPI 1922379288.
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
- (925) 875-6100
- Email not available
Practice Locations
4050 DUBLIN BLVD
Dublin, CA 94568
795 El Camino Real
Palo Alto, CA 94301
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
- Acid reflux
- Fatty liver disease
- IBS
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
- Chronic kidney disease
- Enlarged prostate
Respiratory
Blood & Circulation
- Blood clots
Blood disorders
- Anemia
Brain & Nerves
Brain and nerves
- Vertigo
Cardiac and vascular
- AFib
Digestive
- Diverticulitis
Heart & Circulation
- Heart disease
Infections
- Impetigo
Kidney & Bladder
Lungs & Breathing
Mental Health
- Generalized anxiety disorder
- Insomnia and Sleep Problems
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
- EKG
- Spirometry
Bones & Joints
- Trigger Point Injections
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
- Endoscopy
Exams & Consultations
- Pre-Op Clearance Exam
Heart & Circulation
- Blood Pressure Check
- Heart monitor
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
- Ingrown toenail removal
- Suture removal
Office procedures
- Cryotherapy for skin lesions
- Earwax removal
- Incision and drainage of an abscess
- Skin biopsy
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
- Knee Joint Injection
Preventive & Routine Care
Screenings & Diagnostics
- Bone Density Scan Referral
- Diabetes Screening and A1C Test
Sexual health
- STI Testing
Procedures Most Often Billed to Medicare
329 services · 247 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Sarscov2 vac 50 mcg/0.5ml im | Treatment | 91322 |
13 | Less often than most peers in Internal Medicine |
| Influenza vaccine, inactivated | Treatment | 90653 |
13 | Less often than most peers in Internal Medicine |
| Admn sarscov2 vacc 1 dose | Treatment | 90480 |
13 | 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 |
133 | As often as other peers in Internal Medicine |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
53 | As often as other 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 |
50 | As often as other peers in Internal Medicine |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
38 | As often as other peers in Internal Medicine |
| Administration of influenza virus vaccine | Billing code | G0008 |
16 | Less often 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 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
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 — 27 related providers in 4 groups
Other internists in Dublin 3
Same specialty, same city.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2009 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Sarscov2 vac 50 mcg/0.5ml im 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Diana V. Nguyen's specialty?
Diana V. Nguyen is an internist in Dublin, 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 Diana V. Nguyen?
Diana V. Nguyen is listed at 4050 Dublin Blvd, Dublin, CA 94568. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Diana V. Nguyen?
The number on file is (925) 875-6100. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Diana V. Nguyen's NPI number?
Diana V. Nguyen's National Provider Identifier is 1922379288. 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 Diana V. Nguyen's education?
Diana V. Nguyen attended University of California, Geffen School of Medicine, graduating in 2009. This comes from the CMS National Downloadable File.
CMS public data
How long has Diana V. Nguyen been practicing?
Diana V. Nguyen has 17 years experience. Calculated from a graduation year of 2009, reported in the CMS National Downloadable File.
CMS public data
What is Diana V. Nguyen known for?
According to Medicare billing data, Diana V. Nguyen provides treatments such as sarscov2 vac 50 mcg/0.5ml im 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
Has Diana V. Nguyen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Diana V. Nguyen. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.