Doctor profile · Federal record

Dr. Mai-Khanh Bui-Duy, M.D.

Internal Medicine Physician · Watsonville, CA

  • NPI 1275858409
  • 16 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
45 Neilson St
Watsonville, CA 950762468
(831) 728-0222
fax (831) 707-0277
Additional location
1545 Divisadero Street
San Francisco, CA 941430320
(415) 353-7900
Mailing address
204 E Beach St
Watsonville, CA 950764809

Credentials & registration

NPPES · NUCC
NPI registered
March 2010 — 16 yrs on file
Profile last updated
March 24, 2020
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #A119506

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1275858409. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
173
Distinct HCPCS
3
Medicare allowed
$1,917
HCPCS Description Services Patients Avg allowed
83036 Hemoglobin a1c level 72 48 $10
82947 Blood glucose (sugar) level 51 39 $4
G0442 Annual alcohol misuse screening, 5 to 15 minutes 50 50 $21

In context: peer comparison

Among 2 peers in Watsonville Internal Medicine Physician, average services per provider: 104. This provider delivers 1.7× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
559
Patients
62
Total drug cost
$121,096
Drug Type Claims Patients Total cost
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 103 11 $4,692
Atorvastatin Calcium Generic 81 23 $2,089
Metformin Hcl Generic 54 17 $1,164
Losartan Potassium Generic 44 11 $1,138
Trulicity (Dulaglutide) Brand 43 0 $70,724
Diclofenac Sodium Generic 40 0 $1,741
Lisinopril Generic 31 0 $532
Gabapentin Generic 27 0 $2,466
Amlodipine Besylate Generic 24 0 $539
Sumatriptan Succinate Generic 24 0 $464

Frequently asked questions

Auto-generated from federal data
What is Dr. Mai-Khanh Bui-Duy's medical specialty?
Dr. Mai-Khanh Bui-Duy practices Internal Medicine Physician in Watsonville, CA.
Where does Dr. Mai-Khanh Bui-Duy practice?
Dr. Mai-Khanh Bui-Duy practices at 45 Neilson St, Watsonville, CA 950762468. Office phone: 8317280222.
What is Dr. Mai-Khanh Bui-Duy's NPI?
Dr. Mai-Khanh Bui-Duy's National Provider Identifier (NPI) is 1275858409, issued by NPPES.
What procedures does Dr. Mai-Khanh Bui-Duy commonly perform?
Top Medicare-reported procedures in 2023: Hemoglobin a1c level (HCPCS 83036); Blood glucose (sugar) level (HCPCS 82947); Annual alcohol misuse screening, 5 to 15 minutes (HCPCS G0442). Source: CMS Medicare Physician & Other Practitioners file.