Doctor profile · Federal record

Dr. Phuong Nguyen, DO

Internal Medicine Physician (CMS: Internal Medicine) · Student in an Organized Health Care Education/Training Program · Sierra Madre, CA

  • NPI 1336609908
  • Accepts Medicare
  • 7 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
147 W Sierra Madre Blvd
Sierra Madre, CA 910242492
(626) 355-3443
fax (626) 355-7843

Credentials & registration

NPPES · NUCC
NPI registered
March 2019 — 7 yrs on file
Profile last updated
February 2, 2023
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #20A19418

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1336609908. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
473
Distinct HCPCS
10
Medicare allowed
$48,851
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 196 107 $139
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 66 66 $140
G0444 Annual depression screening, 5 to 15 minutes 44 44 $21
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 37 35 $16
99213 Established patient office or other outpatient visit, 20-29 minutes 33 25 $98
99203 New patient office or other outpatient visit, 30-44 minutes 20 20 $122
83036 Hemoglobin a1c level 19 12 $10
G0008 Administration of influenza virus vaccine 19 19 $33
90686 Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage 14 14 $22
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 13 13 $283

In context: peer comparison

Among 2 peers in this city , average services per provider: 57. This provider delivers 8.3× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$428
Transactions
18
Manufacturers
7
Payer (manufacturer) Industry Txns Amount
Lilly USA, LLC 4 $94.81
PFIZER INC. 4 $88.89
Novartis Pharmaceuticals Corporation 3 $75.98
ABBVIE INC. 3 $57.84
Exact Sciences Corporation 2 $51.90
Novo Nordisk Inc 1 $34.23
Solventum Corporation 1 $24.07

By nature of payment

Food and Beverage
$428

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
513
Patients
201
Total drug cost
$34,656
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 59 25 $1,029
Levothyroxine Sodium Generic 49 14 $893
Fluticasone Propionate Generic 42 36 $559
Nifedipine Er (Nifedipine) Brand 40 0 $1,313
Rosuvastatin Calcium Generic 36 13 $653
Simvastatin Generic 34 0 $672
Losartan Potassium Generic 33 0 $365
Paxlovid (Eua) (Nirmatrelvir/Ritonavir) Brand 33 33 $347
Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) Brand 31 29 $436
Lisinopril Generic 30 0 $200

Frequently asked questions

Auto-generated from federal data
What is Dr. Phuong Nguyen's medical specialty?
Dr. Phuong Nguyen practices Internal Medicine Physician in Sierra Madre, CA.
Where does Dr. Phuong Nguyen practice?
Dr. Phuong Nguyen practices at 147 W Sierra Madre Blvd, Sierra Madre, CA 910242492. Office phone: 6263553443.
What is Dr. Phuong Nguyen's NPI?
Dr. Phuong Nguyen's National Provider Identifier (NPI) is 1336609908, issued by NPPES.
Does Dr. Phuong Nguyen accept Medicare assignment?
Yes. Dr. Phuong Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Phuong Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Annual depression screening, 5 to 15 minutes (HCPCS G0444). Source: CMS Medicare Physician & Other Practitioners file.