Doctor profile · Federal record
Dr. Stephen Chen, MD
Critical Care Medicine (Internal Medicine) Physician (CMS: Critical Care (Intensivists)) · Internal Medicine Physician · Pulmonary Disease Physician · Sleep Medicine (Internal Medicine) Physician · Monterey Park, CA
- NPI 1205821477
- Accepts Medicare
- 28 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
500 N Garfield Ave, Suite 204
Monterey Park, CA 917541242
(626) 280-4393
fax (626) 280-5379
Credentials & registration
- NPI registered
- September 2005 — 21 yrs on file
- Profile last updated
- April 20, 2020
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207RC0200X — NUCC code
- State license (1)
- California #A71696
- Medicaid
- CA #00A716960
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1205821477. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
5,500
Distinct HCPCS
10
Medicare allowed
$829,076
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 2,640 | 562 | $125 | |
99291 |
Critical care, first 30-74 minutes | 1,167 | 361 | $222 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 531 | 355 | $194 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 338 | 249 | $139 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 156 | 149 | $182 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 75 | 26 | $83 | |
94060 |
Test to measure expiratory airflow and volume changes before and after medication administration | 72 | 71 | $44 | |
94727 |
Test to determine lung volumes using gas dilution or washout | 72 | 71 | $49 | |
94729 |
Test to examine how well the lungs exchange gases | 72 | 71 | $65 | |
G0180 |
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | 62 | 37 | $58 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 218. This provider delivers 25× the peer median.Open Payments
Industry payments received
All-time total
$59,271
Transactions
126
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GlaxoSmithKline, LLC. | 41 | $29,576.75 | |
| AstraZeneca Pharmaceuticals LP | 33 | $27,301.87 | |
| Bayer Healthcare Pharmaceuticals Inc. | 2 | $928.00 | |
| ABBVIE INC. | 10 | $238.60 | |
| Boehringer Ingelheim Pharmaceuticals, Inc. | 7 | $233.60 | |
| Merck Sharp & Dohme LLC | 9 | $192.38 | |
| Actelion Pharmaceuticals US, Inc. | 3 | $174.46 | |
| ABIOMED | 1 | $125.00 | |
| Mylan Specialty L.P. | 6 | $109.97 | |
| United Therapeutics Corporation | 4 | $81.60 | |
| GENZYME CORPORATION | 4 | $77.39 | |
| Regeneron Healthcare Solutions, Inc. | 2 | $44.62 | |
| Paratek Pharmaceuticals, Inc. | 2 | $34.40 | |
| Shionogi Inc | 1 | $31.98 | |
| Insmed, Inc. | 1 | $26.59 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,845
Patients
874
Total drug cost
$959,019
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) | Brand | 675 | 114 | $503,963 |
| Montelukast Sodium | Generic | 529 | 110 | $6,826 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 409 | 109 | $14,755 |
| Fluticasone Propionate | Generic | 353 | 98 | $6,837 |
| Roflumilast | Generic | 212 | 35 | $46,857 |
| Levocetirizine Dihydrochloride | Generic | 211 | 60 | $4,132 |
| Ventolin Hfa (Albuterol Sulfate) | Brand | 207 | 51 | $13,312 |
| Anoro Ellipta (Umeclidinium Brm/Vilanterol Tr) | Brand | 204 | 42 | $112,298 |
| Breo Ellipta (Fluticasone/Vilanterol) | Brand | 195 | 43 | $90,121 |
| Combivent Respimat (Ipratropium/Albuterol Sulfate) | Brand | 170 | 29 | $90,875 |
Hospital affiliations
Frequently asked questions
What is Dr. Stephen Chen's medical specialty?
Dr. Stephen Chen practices Critical Care Medicine (Internal Medicine) Physician in Monterey Park, CA.
Where does Dr. Stephen Chen practice?
Dr. Stephen Chen practices at 500 N Garfield Ave, Monterey Park, CA 917541242. Office phone: 6262804393.
What is Dr. Stephen Chen's NPI?
Dr. Stephen Chen's National Provider Identifier (NPI) is 1205821477, issued by NPPES.
Does Dr. Stephen Chen accept Medicare assignment?
Yes. Dr. Stephen Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephen Chen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Critical care (HCPCS 99291); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.