Doctor profile · Federal record

Dr. Tuan Lam, M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (CMS: Thoracic Surgery) · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Fountain Valley, CA

  • NPI 1124290713
  • Accepts Medicare
  • 29 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
18035 Brookhurst St Ste 1300
Fountain Valley, CA 927086738
(657) 241-9440
Mailing address
10152 Cowan Heights Dr
Santa Ana, CA 927051597

Credentials & registration

NPPES · NUCC
NPI registered
March 2008 — 18 yrs on file
Profile last updated
December 20, 2023
Year of graduation
1997 — 29 yrs since
Specialty taxonomy
208G00000X — NUCC code
State licenses (2)
California #A69720 · Virginia #0101102688

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1124290713. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
205
Distinct HCPCS
10
Medicare allowed
$67,055
HCPCS Description Services Patients Avg allowed
99205 New patient office or other outpatient visit, 60-74 minutes 32 32 $241
33533 Coronary artery bypass using artery graft, 1 graft 30 30 $1,291
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 24 24 $139
33508 Harvest of vein using an endoscope 23 23 $16
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 22 13 $52
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 22 19 $84
33518 Coronary artery bypass using vein or artery graft, 2 grafts 16 16 $385
99213 Established patient office or other outpatient visit, 20-29 minutes 13 12 $100
99205 New patient office or other outpatient visit, 60-74 minutes 12 12 $192
33519 Coronary artery bypass using vein or artery graft, 3 grafts 11 11 $376

In context: peer comparison

Among 3 peers in Fountain Valley Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician, average services per provider: 19. This provider delivers 11× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,862
Transactions
30
Manufacturers
7
Payer (manufacturer) Industry Txns Amount
Atricure, INC. 14 $587.76
Abbott Laboratories 5 $578.91
Abiomed 6 $357.14
Edwards Lifesciences Corporation 1 $151.53
Solventum Corporation 1 $116.61
Zoll Services LLC (A/K/A Zoll LifeCor Corp) 2 $36.59
Davol INC. 1 $33.07

By nature of payment

Food and Beverage
$1,837
Travel and Lodging
$24

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Tuan Lam's medical specialty?
Dr. Tuan Lam practices Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Fountain Valley, CA.
Where does Dr. Tuan Lam practice?
Dr. Tuan Lam practices at 18035 Brookhurst St Ste 1300, Fountain Valley, CA 927086738. Office phone: 6572419440.
What is Dr. Tuan Lam's NPI?
Dr. Tuan Lam's National Provider Identifier (NPI) is 1124290713, issued by NPPES.
Does Dr. Tuan Lam accept Medicare assignment?
Yes. Dr. Tuan Lam accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tuan Lam commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99205); Coronary artery bypass using artery graft, 1 graft (HCPCS 33533); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.