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Physician

THERESA THANH NGUYEN, M.D.

Internal Medicine

WESTMINSTER, CA, 92683
NPI: 1003893801

Contact

Internal Medicine

WESTMINSTER, CA

Contact information is sourced from hospital affiliations. None on file.

Hospital Affiliations

No hospital affiliations on file. Choose a procedure to open search with this physician's NPI and billing code

No hospital affiliations found.

Common Procedures for Internal Medicine

Annual Physical ExamChronic Disease ManagementPreventive ScreeningBlood Pressure ManagementDiabetes ManagementCholesterol ManagementImmunizationsEKGSpirometryHealth Risk Assessment

Based on specialty. Actual services may vary — contact the provider's office to confirm.

Procedure Pricing (Medicare Data)

Based on CMS Medicare Provider Utilization data for 2023. These represent what this physician charged Medicare, not necessarily what you would pay. Compare with other physicians

ProcedureAvg ChargeMedicare AllowedMedicare PaidServices
90677
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
$367$280$28021
99203
New patient office or other outpatient visit, 30-44 minutes
$250$122$8111
G0438
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
$239$178$17835
G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
$221$140$140207
99213
Established patient office or other outpatient visit, 20-29 minutes
$150$97$681,599
99490
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
$100$67$47695
93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
$85$16$1124
96372
Injection of drug or substance under skin or into muscle
$69$16$937
90674
Influenza vaccine, quadrivalent derived from cell cultures, preservative and antibiotic free
$50$33$33189
90686
Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage
$50$22$2231
36415
Insertion of needle into vein for collection of blood sample
$40$8$8746
G0008
Administration of influenza virus vaccine
$40$33$33222
G0009
Administration of pneumococcal vaccine
$40$33$3322

Compare prices for procedures performed by Internal Medicine physicians

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Physician identity data from the NPPES NPI Registry. Last synced 3/28/2026.