Total Payments
$323,513
2024 Payments
$27,480
Companies
75
Transactions
1,781
Medicare Patients
8,203
Medicare Billing
$1.6M
Payment Breakdown by Category
Other$243,227 (75.2%)
Food & Beverage$49,111 (15.2%)
Travel$19,752 (6.1%)
Consulting$10,606 (3.3%)
Education$816.54 (0.3%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $243,227 | 165 | 75.2% |
| Food and Beverage | $49,111 | 1,453 | 15.2% |
| Travel and Lodging | $19,752 | 125 | 6.1% |
| Consulting Fee | $10,606 | 9 | 3.3% |
| Education | $816.54 | 29 | 0.3% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Amgen Inc. | $57,948 | 175 | $0 (2024) |
| Radius Health, Inc. | $48,389 | 99 | $0 (2024) |
| Amarin Pharma Inc. | $33,199 | 99 | $0 (2022) |
| Janssen Pharmaceuticals, Inc | $33,042 | 204 | $0 (2023) |
| ABBVIE INC. | $31,913 | 131 | $0 (2024) |
| Gilead Sciences, Inc. | $29,422 | 120 | $0 (2023) |
| Allergan, Inc. | $23,037 | 95 | $0 (2021) |
| IRONWOOD PHARMACEUTICALS, INC | $8,749 | 47 | $0 (2024) |
| UROVANT SCIENCES INC | $7,801 | 15 | $0 (2022) |
| IDORSIA PHARMACEUTICALS US INC | $7,718 | 6 | $0 (2023) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $27,480 | 151 | Amgen Inc. ($8,289) |
| 2023 | $19,349 | 152 | IDORSIA PHARMACEUTICALS US INC ($7,718) |
| 2022 | $21,156 | 157 | UROVANT SCIENCES INC ($7,801) |
| 2021 | $23,539 | 196 | AbbVie Inc. ($6,064) |
| 2020 | $26,736 | 156 | Allergan, Inc. ($7,195) |
| 2019 | $76,106 | 315 | Amgen Inc. ($18,577) |
| 2018 | $60,762 | 302 | Radius Health, Inc. ($24,889) |
| 2017 | $68,385 | 352 | Amarin Pharma Inc. ($15,151) |
All Payment Transactions
1,781 individual payment records from CMS Open Payments — Page 1 of 72
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 12/20/2024 | Mylan Specialty L.P. | YUPELRI (Drug) | Food and Beverage | In-kind items and services | $14.25 | General |
| Category: Anticholinergics, Inhaled | ||||||
| 12/18/2024 | Novartis Pharmaceuticals Corporation | LEQVIO (Drug) | Food and Beverage | In-kind items and services | $24.16 | General |
| Category: Cardiology/Vascular Diseases | ||||||
| 12/18/2024 | Phathom Pharmaceuticals, Inc. | VOQUEZNA (Drug) | Food and Beverage | In-kind items and services | $14.82 | General |
| Category: GASTROENTEROLOGY | ||||||
| 12/16/2024 | Bayer Healthcare Pharmaceuticals Inc. | Kerendia (Drug) | Food and Beverage | In-kind items and services | $21.64 | General |
| Category: Cardio-renal | ||||||
| 12/06/2024 | AstraZeneca Pharmaceuticals LP | FARXIGA (Drug) | Food and Beverage | In-kind items and services | $20.06 | General |
| Category: Cardiovascular and Metabolism | ||||||
| 11/20/2024 | AstraZeneca Pharmaceuticals LP | BREZTRI (Drug) | Food and Beverage | In-kind items and services | $18.55 | General |
| Category: Respiratory | ||||||
| 11/19/2024 | Boehringer Ingelheim Pharmaceuticals, Inc. | JARDIANCE (Drug) | Food and Beverage | In-kind items and services | $19.84 | General |
| Category: DIABETES | ||||||
| 11/15/2024 | Bayer Healthcare Pharmaceuticals Inc. | Kerendia (Drug) | Food and Beverage | In-kind items and services | $24.08 | General |
| Category: Cardio-renal | ||||||
| 11/15/2024 | Amgen Inc. | Otezla (Drug), Repatha | Food and Beverage | In-kind items and services | $5.36 | General |
| Category: Inflammation | ||||||
| 11/14/2024 | Phathom Pharmaceuticals, Inc. | VOQUEZNA (Drug) | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | Cash or cash equivalent | $1,120.00 | General |
| Category: GASTROENTEROLOGY | ||||||
| 11/13/2024 | Mannkind Corporation | AFREZZA (Drug) | Food and Beverage | In-kind items and services | $24.87 | General |
| Category: DIABETES MEDICINE | ||||||
| 11/08/2024 | AstraZeneca Pharmaceuticals LP | FARXIGA (Drug) | Food and Beverage | In-kind items and services | $21.29 | General |
| Category: Cardiovascular and Metabolism | ||||||
| 11/05/2024 | Phathom Pharmaceuticals, Inc. | VOQUEZNA (Drug) | Food and Beverage | In-kind items and services | $157.32 | General |
| Category: GASTROENTEROLOGY | ||||||
| 11/04/2024 | Bayer Healthcare Pharmaceuticals Inc. | Kerendia (Drug) | Food and Beverage | In-kind items and services | $19.73 | General |
| Category: Cardio-renal | ||||||
| 10/25/2024 | Novartis Pharmaceuticals Corporation | ENTRESTO (Drug), LEQVIO | Food and Beverage | In-kind items and services | $17.15 | General |
| Category: Cardiology/Vascular Diseases | ||||||
| 10/14/2024 | Sumitomo Pharma America, Inc. | GEMTESA (Drug) | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | Cash or cash equivalent | $1,470.00 | General |
| Category: UROLOGY | ||||||
| 10/09/2024 | AstraZeneca Pharmaceuticals LP | FARXIGA (Drug) | Food and Beverage | In-kind items and services | $125.00 | General |
| Category: Cardiovascular and Metabolism | ||||||
| 10/09/2024 | AstraZeneca Pharmaceuticals LP | FARXIGA (Drug) | Food and Beverage | In-kind items and services | $20.00 | General |
| Category: Cardiovascular and Metabolism | ||||||
| 10/09/2024 | Boehringer Ingelheim Pharmaceuticals, Inc. | JARDIANCE (Drug) | Food and Beverage | In-kind items and services | $19.18 | General |
| Category: DIABETES | ||||||
| 10/09/2024 | GlaxoSmithKline, LLC. | TRELEGY ELLIPTA (Drug), AREXVY | Food and Beverage | In-kind items and services | $8.57 | General |
| Category: RESPIRATORY | ||||||
| 10/04/2024 | Radius Health, Inc. | Tymlos (Drug) | Food and Beverage | In-kind items and services | $22.71 | General |
| Category: Endocrinology | ||||||
| 10/03/2024 | Kowa Pharmaceuticals America, Inc. | ZORYVE (Drug) | Food and Beverage | In-kind items and services | $16.96 | General |
| Category: DERMATOLOGY | ||||||
| 10/01/2024 | Sumitomo Pharma America, Inc. | GEMTESA (Drug) | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | In-kind items and services | $781.94 | General |
| Category: UROLOGY | ||||||
| 09/30/2024 | Sumitomo Pharma America, Inc. | GEMTESA (Drug) | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | In-kind items and services | $121.91 | General |
| Category: UROLOGY | ||||||
| 09/30/2024 | Mylan Specialty L.P. | YUPELRI (Drug) | Food and Beverage | In-kind items and services | $20.65 | General |
| Category: Anticholinergics, Inhaled | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 21 | 2,085 | 6,192 | $711,355 | $433,693 |
| 2022 | 14 | 2,039 | 5,519 | $525,440 | $368,129 |
| 2021 | 14 | 1,791 | 5,185 | $497,630 | $345,360 |
| 2020 | 16 | 2,288 | 6,288 | $569,105 | $421,377 |
Total Patients
8,203
Total Services
23,184
Medicare Billing
$1.6M
Procedure Codes
68
All Medicare Procedures & Services
68 procedure records from CMS Medicare Utilization — Page 1 of 3
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Facility | 2023 | 126 | 1,897 | $238,700 | $123,045 | 51.5% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2023 | 519 | 1,521 | $152,100 | $101,566 | 66.8% |
| 99310 | Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | Office | 2023 | 125 | 1,003 | $104,320 | $81,543 | 78.2% |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Facility | 2023 | 130 | 204 | $53,880 | $29,386 | 54.5% |
| 99306 | Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | Office | 2023 | 128 | 177 | $27,000 | $21,031 | 77.9% |
| 99239 | Hospital discharge day management, more than 30 minutes | Facility | 2023 | 116 | 180 | $30,100 | $16,242 | 54.0% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2023 | 197 | 314 | $23,550 | $15,744 | 66.9% |
| G0181 | Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow | Office | 2023 | 86 | 144 | $25,920 | $12,648 | 48.8% |
| G0179 | Physician or allowed practitioner re-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 a | Office | 2023 | 82 | 141 | $11,280 | $4,761 | 42.2% |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | Office | 2023 | 29 | 29 | $7,250 | $4,647 | 64.1% |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Office | 2023 | 30 | 30 | $4,500 | $4,211 | 93.6% |
| 90756 | Influenza vaccine, quadrivalent derived from cell cultures | Office | 2023 | 105 | 107 | $3,745 | $3,394 | 90.6% |
| 99442 | Telephone medical discussion with physician, 11-20 minutes | Office | 2023 | 78 | 93 | $6,975 | $3,104 | 44.5% |
| 99497 | Advance care planning, first 30 minutes | Office | 2023 | 34 | 34 | $3,400 | $2,951 | 86.8% |
| 99443 | Telephone medical discussion with physician, 21-30 minutes | Office | 2023 | 82 | 89 | $8,900 | $2,845 | 32.0% |
| G0438 | Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | Office | 2023 | 11 | 11 | $2,750 | $1,962 | 71.4% |
| 99309 | Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | Office | 2023 | 11 | 20 | $2,400 | $1,811 | 75.5% |
| G0008 | Administration of influenza virus vaccine | Office | 2023 | 105 | 107 | $1,070 | $1,049 | 98.0% |
| G0446 | Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes | Office | 2023 | 34 | 34 | $2,040 | $938.40 | 46.0% |
| G0442 | Annual alcohol misuse screening, 5 to 15 minutes | Office | 2023 | 34 | 34 | $1,360 | $702.44 | 51.7% |
| G0444 | Annual depression screening, 5 to 15 minutes | Office | 2023 | 23 | 23 | $115.00 | $112.70 | 98.0% |
| 99232 | Follow-up hospital inpatient care per day, typically 25 minutes | Facility | 2022 | 144 | 1,739 | $139,120 | $104,110 | 74.8% |
| 99310 | Follow-up nursing facility visit per day, typically 35 minutes | Office | 2022 | 121 | 1,011 | $101,100 | $76,112 | 75.3% |
| 99443 | Telephone medical discussion with physician, 21-30 minutes | Office | 2022 | 441 | 754 | $75,400 | $43,779 | 58.1% |
| 99223 | Initial hospital inpatient care per day, typically 70 minutes | Facility | 2022 | 149 | 210 | $37,800 | $29,722 | 78.6% |
About Dr. Oscar Chien, M.D
Dr. Oscar Chien, M.D is a Geriatric Medicine healthcare provider based in San Gabriel, California. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 09/05/2006. The National Provider Identifier (NPI) number assigned to this provider is 1679675904.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. Oscar Chien, M.D has received a total of $323,513 in payments from pharmaceutical and medical device companies, with $27,480 received in 2024. These payments were reported across 1,781 transactions from 75 companies. The most common payment nature is "Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program" ($243,227).
As a Medicare-enrolled provider, Chien has provided services to 8,203 Medicare beneficiaries, totaling 23,184 services with total Medicare billing of $1.6M. Data is available for 4 years (2020–2023), covering 68 distinct procedure/service records.
Ad
Practice Information
- Specialty Geriatric Medicine
- Location San Gabriel, CA
- Active Since 09/05/2006
- Last Updated 04/02/2020
- Taxonomy Code 207RG0300X
- Entity Type Individual
- Practice Solo Practitioner
- NPI Number 1679675904
Products in Payments
- Tymlos (Biological) $48,259
- Vascepa (Drug) $33,199
- INVOKANA (Drug) $31,676
- Prolia (Biological) $31,433
- LINZESS (Drug) $23,716
- Vemlidy (Drug) $19,914
- GEMTESA (Drug) $14,631
- EVENITY (Biological) $10,095
- UBRELVY (Drug) $8,624
- QUVIVIQ (Drug) $7,718
- Repatha (Biological) $6,587
- VOQUEZNA (Drug) $6,422
- Creon (Drug) $6,390
- DUZALLO (Drug) $5,142
- PANCREAZE (Drug) $4,900
- CREON (Drug) $2,972
- ZURAMPIC (Drug) $2,249
- FARXIGA (Drug) $1,663
- VIBERZI (Drug) $1,551
- XARELTO (Drug) $1,348
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Data Sources
Provider data from NPPES. Payment data from CMS Open Payments. Medicare data from CMS Medicare Provider Utilization. All data is public and updated periodically.