Doctor profile · Federal record

Dr. David Hyun, MD

Cardiovascular Disease Physician (CMS: Cardiovascular Disease (Cardiology)) · Cardiovascular Disease Physician · San Jose, CA

  • NPI 1255312005
  • Accepts Medicare
  • MIPS 95.5 / 100 · 2023
  • 33 yrs in practice
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2020 Forest Ave Ste. 3
San Jose, CA 951284805
(408) 298-0433
fax (408) 295-8818

Credentials & registration

NPPES · NUCC
NPI registered
November 2005 — 21 yrs on file
Profile last updated
May 6, 2023
Year of graduation
1993 — 33 yrs since
Specialty taxonomy
207RC0000X — NUCC code
State licenses (2)
California #A56256 · Louisiana #10025R

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1255312005. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,413
Distinct HCPCS
10
Medicare allowed
$401,992
HCPCS Description Services Patients Avg allowed
99215 Established patient office or other outpatient visit, 40-54 minutes 1,042 514 $217
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 231 224 $79
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 223 32 $137
93042 Electrocardiogram (ecg) 1 to 3 leads with review by physician only 203 30 $8
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 178 174 $262
99205 New patient office or other outpatient visit, 60-74 minutes 123 123 $264
93280 Programming of dual lead pacemaker system 59 33 $105
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 46 31 $200
93015 Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 42 42 $90
93246 Heart rhythm recording of continous external ekg over 8-15 days 42 42 $15

In context: peer comparison

Among 14 peers in this city , average services per provider: 235. This provider delivers 10× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,079
Transactions
49
Manufacturers
13
Payer (manufacturer) Industry Txns Amount
E.R. Squibb & Sons, L.L.C. 13 $310.86
Amgen Inc. 13 $245.39
Novartis Pharmaceuticals Corporation 5 $121.34
Boston Scientific Corporation 4 $86.64
AstraZeneca Pharmaceuticals LP 2 $47.46
Kiniksa Pharmaceuticals International, plc 2 $47.43
PFIZER INC. 2 $46.67
Esperion Therapeutics, Inc. 2 $44.52
Janssen Pharmaceuticals, Inc 2 $35.66
SANOFI-AVENTIS U.S. LLC 1 $33.18
Boehringer Ingelheim Pharmaceuticals, Inc. 1 $24.98
Abbott Laboratories 1 $17.99
GlaxoSmithKline, LLC. 1 $17.37

By nature of payment

Food and Beverage
$1,079

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
2,452
Patients
700
Total drug cost
$542,622
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 356 103 $4,957
Amlodipine Besylate Generic 328 92 $3,240
Eliquis (Apixaban) Brand 235 61 $269,721
Losartan Potassium Generic 224 68 $3,535
Spironolactone Generic 168 52 $2,264
Metoprolol Succinate Generic 166 50 $3,036
Ezetimibe Generic 136 38 $8,051
Diltiazem 24hr Er (Cd) (Diltiazem Hcl) Brand 117 37 $5,301
Olmesartan Medoxomil Generic 114 32 $7,479
Xarelto (Rivaroxaban) Brand 114 29 $145,060

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. David Hyun's medical specialty?
Dr. David Hyun practices Cardiovascular Disease Physician in San Jose, CA.
Where does Dr. David Hyun practice?
Dr. David Hyun practices at 2020 Forest Ave Ste. 3, San Jose, CA 951284805. Office phone: 4082980433.
What is Dr. David Hyun's NPI?
Dr. David Hyun's National Provider Identifier (NPI) is 1255312005, issued by NPPES.
Does Dr. David Hyun accept Medicare assignment?
Yes. Dr. David Hyun accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. David Hyun commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS 93306); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.