Doctor profile · Federal record

Dr. Thanh Nguyen, M.D.

Nephrology Physician (CMS: Nephrology) · Merced, CA

  • NPI 1346419918
  • Accepts Medicare
  • MIPS 71.9 / 100 · 2023
  • 24 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
3393 G St, Suite D
Merced, CA 953400964
(209) 230-9065
fax (209) 349-8511

Credentials & registration

NPPES · NUCC
NPI registered
February 2008 — 18 yrs on file
Profile last updated
September 17, 2013
Year of graduation
2002 — 24 yrs since
Specialty taxonomy
207RN0300X — NUCC code
State license (1)
California #A86202

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1346419918. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,385
Distinct HCPCS
10
Medicare allowed
$378,918
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 635 364 $94
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 621 183 $50
90960 Dialysis services, 4 or more physician visits per month (20 years or older) 508 58 $361
99214 Established patient office or other outpatient visit, 30-39 minutes 152 85 $132
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 136 117 $132
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 85 79 $81
90966 Home dialysis services per month (20 years or older) 82 11 $298
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 64 58 $177
90961 Dialysis services, 2-3 physician visits per month (20 years or older) 51 17 $301
99204 New patient office or other outpatient visit, 45-59 minutes 51 51 $172

In context: peer comparison

Among 3 peers in Merced Nephrology Physician, average services per provider: 166. This provider delivers 14× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$80
Transactions
3
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Merck Sharp & Dohme LLC 2 $53.41
Amgen INC. 1 $26.93

By nature of payment

Food and Beverage
$80

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,319
Patients
484
Total drug cost
$66,463
Drug Type Claims Patients Total cost
Amlodipine Besylate Generic 293 106 $4,363
Chlorthalidone Generic 155 55 $6,574
Losartan Potassium Generic 141 58 $3,156
Lisinopril Generic 93 36 $1,445
Furosemide Generic 72 34 $915
Allopurinol Generic 67 18 $956
Hydralazine Hcl Generic 66 25 $2,009
Valsartan Generic 64 19 $4,258
Metoprolol Succinate Generic 60 19 $1,073
Hydrochlorothiazide Generic 55 18 $238

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Thanh Nguyen's medical specialty?
Dr. Thanh Nguyen practices Nephrology Physician in Merced, CA.
Where does Dr. Thanh Nguyen practice?
Dr. Thanh Nguyen practices at 3393 G St, Merced, CA 953400964. Office phone: 2092309065.
What is Dr. Thanh Nguyen's NPI?
Dr. Thanh Nguyen's National Provider Identifier (NPI) is 1346419918, issued by NPPES.
Does Dr. Thanh Nguyen accept Medicare assignment?
Yes. Dr. Thanh Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thanh Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Dialysis services, 4 or more physician visits per month (20 years or older) (HCPCS 90960). Source: CMS Medicare Physician & Other Practitioners file.