Medicare Enrolled
Dr. Hao Zhang, M.D.
Hematology & Oncology · Los Angeles, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Zhang from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
Are you Dr. Zhang?
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What this data tells you about Dr. Zhang
Dr. Hao Zhang is a hematology & oncology specialist in Los Angeles, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Zhang performed 6,060 Medicare services across 705 unique beneficiaries.
Between the years covered by Open Payments, Dr. Zhang received a total of $36,339 from 111 pharmaceutical and/or device companies across 1455 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hematology & oncology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Zhang is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 19 years in practice
▲ Top 32% volume in CA
$36,339 industry payments
Medicare Practice Summary
Medicare Utilization ↗6,060
Medicare services
Top 32% in CA for hematology & oncology
705
Unique beneficiaries
$33
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~319 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Injection, granisetron hydrochloride, 100 mcg | 1,140 | $0 | $12 |
| Hospital follow-up visit, low complexity Follow-up hospital visit for an established patient with straightforward or low-level medical decision making. The visit requires at least 25 minutes of time spent on the day of service. |
1,101 | $42 | $79 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
1,050 | $0 | $9 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
687 | $67 | $170 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
349 | $105 | $207 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
247 | $14 | $42 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
237 | $1 | $10 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
180 | $12 | $42 |
| Injection, heparin sodium, (heparin lock flush), per 10 units | 178 | $0 | $5 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
177 | $122 | $272 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
170 | $72 | $147 |
| 5% dextrose/water (500 ml = 1 unit) | 137 | $1 | $10 |
| Intravenous infusion of new drug or substance, 1 hour or less This procedure involves administering a new medication or substance directly into a vein through an existing access site. The infusion is completed within one hour or less. |
97 | $61 | $133 |
| Additional sequential IV infusion, 1 hour or less This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less. |
91 | $27 | $60 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
86 | $149 | $470 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
67 | $1 | $8 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
29 | $102 | $240 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
23 | $151 | $287 |
| New patient office visit, complex (60-74 min) | 14 | $180 | $364 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
9.9% high complexity
47.2% medium
42.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$36,339
Total received (2018-2024)
Avg $5,191/year across 7 years
Top 14% in CA for hematology & oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
111
Companies
1,455
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$31,887 (87.7%)
Other
Charitable contributions, space rental, and other categories
$2,057 (5.7%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$1,850 (5.1%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$545 (1.5%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$7,313
2023
$6,255
2022
$4,990
2021
$5,323
2020
$3,415
2019
$5,381
2018
$3,662
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Novartis Pharmaceuticals Corporation
$923
PFIZER INC.
$873
AstraZeneca Pharmaceuticals LP
$722
Janssen Biotech, Inc.
$556
SOBI, INC
$448
Merck Sharp & Dohme LLC
$341
GlaxoSmithKline, LLC.
$287
Incyte Corporation
$285
E.R. Squibb & Sons, L.L.C.
$215
Gilead Sciences, Inc.
$205
Karyopharm Therapeutics Inc.
$190
Celgene Corporation
$171
Eisai Inc.
$156
Lilly USA, LLC
$152
JAZZ PHARMACEUTICALS INC.
$147
Takeda Pharmaceuticals U.S.A., Inc.
$134
Boehringer Ingelheim Pharmaceuticals, Inc.
$121
PharmaEssentia USA Corporation
$90
ABBVIE INC.
$85
Organon Llc
$79
Daiichi Sankyo Inc.
$63
BeiGene USA, Inc.
$60
ARRAY BIOPHARMA INC
$59
SUN PHARMACEUTICAL INDUSTRIES INC.
$59
Deciphera Pharmaceuticals Inc.
$57
Aveo Pharmaceuticals, Inc.
$55
Tempus AI, Inc
$55
Exelixis Inc.
$54
Ipsen Biopharmaceuticals, Inc
$52
Adaptive Biotechnologies Corporation
$44
Bayer Healthcare Pharmaceuticals Inc.
$43
Blueprint Medicines Corporation
$42
PROGENICS PHARMACEUTICALS, INC.
$42
Telix Pharmaceuticals
$38
Acrotech Biopharma Inc.
$35
Novocure Inc.
$34
Alexion Pharmaceuticals, Inc.
$33
SpringWorks Therapeutics, Inc.
$32
ADC Therapeutics America, Inc.
$31
Dendreon Pharmaceuticals LLC
$29
Genentech USA, Inc.
$25
Stemline Therapeutics Inc.
$25
Agios Pharmaceuticals, Inc.
$24
Mirati Therapeutics, Inc.
$22
Myriad Genetic Laboratories, Inc.
$21
Secura Bio, Inc.
$21
Coherus Biosciences Inc.
$21
Legend Biotech USA Inc.
$21
Astellas Pharma US Inc
$20
GENZYME CORPORATION
$19
Top 3 companies account for 34.4% of 2024 payments
All-time payments by company (2018-2024) ›
PFIZER INC.
$3,055
Novartis Pharmaceuticals Corporation
$2,933
AstraZeneca Pharmaceuticals LP
$2,925
Janssen Biotech, Inc.
$2,166
Dova Pharmaceuticals
$2,033
Amgen Inc.
$1,535
E.R. Squibb & Sons, L.L.C.
$1,303
NOVARTIS PHARMACEUTICALS CORPORATION
$1,135
Merck Sharp & Dohme LLC
$1,036
Lilly USA, LLC
$910
Genentech USA, Inc.
$897
Boehringer Ingelheim Pharmaceuticals, Inc.
$820
Incyte Corporation
$815
GlaxoSmithKline, LLC.
$809
Celgene Corporation
$794
Seagen Inc.
$693
Karyopharm Therapeutics Inc.
$669
Astellas Pharma US Inc
$667
Takeda Pharmaceuticals U.S.A., Inc.
$573
Exelixis Inc.
$554
Merck Sharp & Dohme Corporation
$548
SOBI, INC
$533
Gilead Sciences, Inc.
$496
Bayer HealthCare Pharmaceuticals Inc.
$434
GENZYME CORPORATION
$415
Eisai Inc.
$406
Sobi, Inc
$345
Daiichi Sankyo Inc.
$307
Taiho Oncology, Inc.
$306
Teva Pharmaceuticals USA, Inc.
$257
PharmaEssentia USA Corporation
$224
Seattle Genetics, Inc.
$221
Puma Biotechnology, Inc.
$218
Blueprint Medicines Corporation
$217
ARRAY BIOPHARMA INC
$208
Alexion Pharmaceuticals, Inc.
$194
TOLMAR Pharmaceuticals, Inc.
$185
Rigel Pharmaceuticals, Inc.
$185
ImmunoGen, Inc.
$182
TerSera Therapeutics LLC
$173
Myovant Sciences Inc.
$170
JAZZ PHARMACEUTICALS INC.
$170
EISAI INC.
$146
ABBVIE INC.
$142
Foundation Medicine, Inc.
$133
Bayer Healthcare Pharmaceuticals Inc.
$118
BeiGene USA, Inc.
$113
Progenics Pharmaceuticals, Inc.
$110
Kite Pharma, Inc.
$99
Myriad Genetic Laboratories, Inc.
$93
EMD Serono, Inc.
$91
Agios Pharmaceuticals, Inc.
$87
Organon Llc
$79
Organon LLC
$79
Ipsen Biopharmaceuticals, Inc
$76
Adaptive Biotechnologies Corporation
$73
TESARO, Inc.
$71
Deciphera Pharmaceuticals Inc.
$70
Octapharma USA, Inc.
$69
Clovis Oncology, Inc.
$66
Global Blood Therapeutics, Inc.
$66
Coherus Biosciences Inc.
$60
SUN PHARMACEUTICAL INDUSTRIES INC.
$59
Mylan Institutional Inc.
$58
EUSA Pharma (US) LLC
$57
INSYS Therapeutics Inc
$56
Aveo Pharmaceuticals, Inc.
$55
Tempus AI, Inc
$55
Stemline Therapeutics Inc.
$55
Pharmacyclics LLC, An AbbVie Company
$54
TAIHO ONCOLOGY, INC.
$52
Secura Bio, Inc.
$51
SANOFI-AVENTIS U.S. LLC
$50
AbbVie Inc.
$49
MorphoSys, US Inc.
$46
Helsinn Therapeutics (U.S.), Inc.
$46
GE HealthCare
$45
Pharmacyclics LLC, an AbbVie Company
$42
PROGENICS PHARMACEUTICALS, INC.
$42
Novo Nordisk Inc
$40
Kyowa Kirin, Inc.
$40
Mirati Therapeutics, Inc.
$40
Sun Pharmaceutical Industries Inc.
$39
Tolmar, Inc.
$38
Telix Pharmaceuticals
$38
AMAG Pharmaceuticals, Inc.
$37
Acrotech Biopharma Inc.
$35
Partner Therapeutics, Inc.
$35
Novocure Inc.
$34
SpringWorks Therapeutics, Inc.
$32
ADC Therapeutics America, Inc.
$31
West Therapeutics Development, LLC
$30
Emmaus Medical, Inc.
$30
Dendreon Pharmaceuticals LLC
$29
Sumitomo Pharma America, Inc.
$29
AbbVie, Inc.
$28
MEDIVATION FIELD SOLUTIONS LLC
$28
Fennec Pharmaceuticals, Inc.
$25
Acrotech Biopharma LLC
$25
Jazz Pharmaceuticals Inc.
$25
Spectrum Pharmaceuticals Inc.
$25
Lexicon Pharmaceuticals, Inc.
$23
Heron Therapeutics, Inc.
$22
PUMA BIOTECHNOLOGY, INC.
$22
Epizyme, Inc.,
$21
Legend Biotech USA Inc.
$21
Sirtex Medical Inc
$21
Clinigen Inc
$20
Shire North American Group Inc
$19
Janssen Pharmaceuticals, Inc
$15
Innate Pharma, Inc
$13
Top 3 companies account for 24.5% of all-time payments
Associated products mentioned in payments ›
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Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (88%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Hematology & oncology specialists within 10 mi
406
Per 100K population
4.1
County median income
$87,760
Nearest hospital
ADVENTIST HEALTH WHITE MEMORIAL
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Zhang is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement in the top 14% of CA peers, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Zhang experienced with injection, granisetron hydrochloride, 100 mcg?
Based on Medicare claims data, Dr. Zhang performed 1,140 injection, granisetron hydrochloride, 100 mcg services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Zhang receive payments from pharmaceutical companies?
Yes. Dr. Zhang received a total of $36,339 from 111 companies across 1,455 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Zhang's costs compare to other hematology & oncology specialists in Los Angeles?
Dr. Zhang's average Medicare payment per service is $33. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Zhang) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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