Internal Medicine, Hematology · Teaneck, NJ
NPI
1649417437
Since 2009
Specialty
Internal Medicine, Hematology
Code 207RH0000X
Group practices
1
Medicare group memberships
Hospitals
3
Hospital affiliations
718 Teaneck Rd, Regional Cancer Center
Teaneck, NJ, 07666
Phone (201) 227-6008
Groups this clinician bills Medicare through
Medicare paid, 2024
$352K
15,215 services
Medicare patients, 2024
393
Average age 75
Drug cost, 2024
$3.5M
1,463 prescriptions
Company payments, 2025
$774
From 14 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Karleung Siu was code 99215 (office e&m - established), 600 times for 145 patients. In total Karleung Siu billed 15,215 services in 146 codes, and Medicare paid $352K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2024-12-06.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99215 Office E&M - Established | Office | 600 | 145 | $151.58 | $91K |
| 36415 Venipuncture Blood Collection | Office | 510 | 198 | $8.63 | $4,403 |
| 85025 Blood Count | Office | 486 | 195 | $7.56 | $3,674 |
| 80053 Clinical Chemistry | Office | 276 | 158 | $10.25 | $2,828 |
| 83615 Clinical Chemistry | Office | 261 | 111 | $5.90 | $1,539 |
| 99214 Office E&M - Established | Office | 259 | 165 | $102.79 | $27K |
| 80076 Clinical Chemistry | Office | 163 | 62 | $7.98 | $1,301 |
| 84550 Clinical Chemistry | Office | 157 | 66 | $4.40 | $691 |
| 83735 Clinical Chemistry | Office | 138 | 45 | $6.57 | $907 |
| 99233 Hospital E&M - Subsequent | Facility | 133 | 43 | $99.68 | $13K |
| 84100 Clinical Chemistry | Office | 131 | 44 | $4.65 | $609 |
| 82728 Clinical Chemistry | Office | 118 | 83 | $13.16 | $1,553 |
| 83550 Clinical Chemistry | Office | 114 | 80 | $8.44 | $962 |
| 83540 Clinical Chemistry | Office | 114 | 80 | $6.24 | $712 |
| 80047 Clinical Chemistry | Office | 110 | 49 | $13.46 | $1,481 |
By year: 2022 $286K for 12,625 services; 2023 $392K for 19,457 services; 2024 $352K for 15,215 services.
Lab tests billed to Medicare, 2024
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 36415 Venipuncture Blood Collection | 510 | 198 | $8.63 | $4,403 |
| 85025 Blood Count | 486 | 195 | $7.56 | $3,674 |
| 80053 Clinical Chemistry | 276 | 158 | $10.25 | $2,828 |
| 83615 Clinical Chemistry | 261 | 111 | $5.90 | $1,539 |
| 80076 Clinical Chemistry | 163 | 62 | $7.98 | $1,301 |
| 84550 Clinical Chemistry | 157 | 66 | $4.40 | $691 |
| 83735 Clinical Chemistry | 138 | 45 | $6.57 | $907 |
| 84100 Clinical Chemistry | 131 | 44 | $4.65 | $609 |
| 82728 Clinical Chemistry | 118 | 83 | $13.16 | $1,553 |
| 83550 Clinical Chemistry | 114 | 80 | $8.44 | $962 |
Medicare prescription drug claims, 2024
In 2024, the drug Karleung Siu prescribed most often to Medicare patients was Anastrozole, with 151 prescriptions and refills. In total Karleung Siu wrote 1,463 Medicare prescriptions that cost $3.5M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Anastrozole Generic | 151 | 425 | 47 | $3,289 |
| Eliquis Apixaban | 98 | 144 | 21 | $84K |
| Jakafi Ruxolitinib Phosphate | 52 | 52 | Under 11 | $892K |
| Prednisone Generic | 48 | 56 | 22 | $287 |
| Gabapentin Generic | 45 | 67 | 14 | $392 |
| Oxycodone Hcl Generic | 43 | 43 | 16 | $1,697 |
| Xarelto Rivaroxaban | 36 | 72 | Under 11 | $39K |
| Brukinsa Zanubrutinib | 34 | 34 | Under 11 | $465K |
| Acyclovir Generic | 25 | 33 | Under 11 | $270 |
| Letrozole Generic | 25 | 60 | Under 11 | $382 |
| Hydroxyurea Generic | 21 | 59 | Under 11 | $933 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 20 | 20 | Under 11 | $637 |
| Ondansetron Hcl Generic | 20 | 20 | 11 | $118 |
| Pegasys Peginterferon Alfa-2a | 19 | 19 | Under 11 | $81K |
| Ondansetron Odt Ondansetron | 19 | 19 | Under 11 | $203 |
Brand drugs: - claims; generic drugs: 1,017 claims; opioid claims: 115.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Karleung Siu $774 ($774 in general payments such as food, travel and fees) from 14 companies. The largest payer was Novartis Pharmaceuticals Corporation with $242.
| Company | Payments | Amount |
|---|---|---|
| Novartis Pharmaceuticals Corporation NVS | 4 | $242 |
| Merck Sharp & Dohme LLC MRK | 5 | $108 |
| AstraZeneca Pharmaceuticals LP AZN | 5 | $78.9 |
| Pfizer Inc. PFE | 4 | $71.45 |
| E.R. Squibb & Sons, L.L.C. BMY | 3 | $41.42 |
| Lilly USA, LLC LLY | 2 | $40.3 |
| Janssen Biotech, Inc. JNJ | 2 | $35.68 |
| Daiichi Sankyo Inc. 4568.T | 2 | $31.47 |
| Bayer Healthcare Pharmaceuticals Inc. BAYN.DE | 1 | $26.77 |
| Taiho Oncology, Inc. 4578.T | 1 | $23.05 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.