Doctor profile · Federal record

Dr. Zonglang Tsai, M.D.

Internal Medicine Physician (CMS: Internal Medicine) · Torrance, CA

  • NPI 1871675744
  • Accepts Medicare
  • 53 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
3011 Artesia Blvd
Torrance, CA 905042613
(310) 329-6395
fax (310) 329-1437

Credentials & registration

NPPES · NUCC
NPI registered
October 2006 — 20 yrs on file
Profile last updated
July 8, 2007
Year of graduation
1973 — 53 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #A35282

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1871675744. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
8,061
Distinct HCPCS
10
Medicare allowed
$259,232
HCPCS Description Services Patients Avg allowed
J0897 Injection, denosumab, 1 mg 1,418 42 $16
96372 Injection of drug or substance under skin or into muscle 1,343 102 $16
99214 Established patient office or other outpatient visit, 30-39 minutes 1,000 105 $139
81002 Urinalysis, manual test 815 105 $3
82044 Urine microalbumin (protein) analysis 690 94 $6
82570 Creatinine level to test for kidney function or muscle injury 688 94 $5
82962 Blood glucose (sugar) test performed by hand-held instrument 542 104 $3
36415 Insertion of needle into vein for collection of blood sample 478 104 $8
80061 Blood test, lipids (cholesterol and triglycerides) 318 102 $13
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 127 12 $125

In context: peer comparison

Among 52 peers in this city , average services per provider: 143. This provider delivers 56× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$3,443
Transactions
155
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
Amgen Inc. 26 $474.14
Alkermes, Inc. 16 $421.59
ABBVIE INC. 28 $395.73
Mannkind Corporation 23 $333.91
AstraZeneca Pharmaceuticals LP 10 $309.77
Bayer Healthcare Pharmaceuticals Inc. 11 $274.21
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) 9 $218.78
Corcept Therapeutics 4 $154.53
Boehringer Ingelheim Pharmaceuticals, Inc. 5 $148.13
Lilly USA, LLC 6 $140.54
GlaxoSmithKline, LLC. 4 $91.44
Paratek Pharmaceuticals, Inc. 4 $82.87
Novartis Pharmaceuticals Corporation 3 $77.53
Dexcom, Inc. 4 $72.51
Merck Sharp & Dohme LLC 2 $59.69

By nature of payment

Food and Beverage
$3,430
Education
$12

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
3,112
Patients
551
Total drug cost
$1,636,538
Drug Type Claims Patients Total cost
Praluent Pen (Alirocumab) Brand 406 43 $230,184
Ezetimibe Generic 385 71 $18,843
Kerendia (Finerenone) Brand 315 46 $260,282
Vascepa (Icosapent Ethyl) Brand 282 54 $157,988
Jardiance (Empagliflozin) Brand 257 53 $232,210
Amlodipine Besylate Generic 188 33 $2,169
Dexlansoprazole Dr (Dexlansoprazole) Brand 177 33 $58,186
Diclofenac Sodium Generic 177 36 $5,841
Tamsulosin Hcl Generic 171 34 $3,513
Repatha Pushtronex (Evolocumab) Brand 165 22 $131,140

Frequently asked questions

Auto-generated from federal data
What is Dr. Zonglang Tsai's medical specialty?
Dr. Zonglang Tsai practices Internal Medicine Physician in Torrance, CA.
Where does Dr. Zonglang Tsai practice?
Dr. Zonglang Tsai practices at 3011 Artesia Blvd, Torrance, CA 905042613. Office phone: 3103296395.
What is Dr. Zonglang Tsai's NPI?
Dr. Zonglang Tsai's National Provider Identifier (NPI) is 1871675744, issued by NPPES.
Does Dr. Zonglang Tsai accept Medicare assignment?
Yes. Dr. Zonglang Tsai accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Zonglang Tsai commonly perform?
Top Medicare-reported procedures in 2023: Injection, denosumab, 1 mg (HCPCS J0897); Injection of drug or substance under skin or into muscle (HCPCS 96372); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.