Internal Medicine, Hematology & Oncology · Norwalk, CT
NPI
1891780805
Since 2005
Specialty
Internal Medicine, Hematology & Oncology
Code 207RH0003X
Group practices
4
Medicare group memberships
Hospitals
4
Hospital affiliations
40 Cross St, 4th Fl
Norwalk, CT, 06851
Phone (203) 845-4890
Groups this clinician bills Medicare through
Medicare paid, 2024
$110K
1,980 services
Medicare patients, 2024
407
Average age 75
Drug cost, 2024
$2.2M
725 prescriptions
Company payments, 2025
$8,946
From 9 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Richard S Zelkowitz was code 99213 (office e&m - established), 684 times for 354 patients. In total Richard S Zelkowitz billed 1,980 services in 18 codes, and Medicare paid $110K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2011-04-12.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99213 Office E&M - Established | Office | 684 | 354 | $69.47 | $48K |
| 99214 Office E&M - Established | Office | 366 | 146 | $106.34 | $39K |
| 99205 Office E&M - New | Office | 18 | 18 | $194.10 | $3,494 |
| 99212 Office E&M - Established | Office | 18 | 17 | $47.27 | $851 |
| 99211 Office E&M - Established | Office | 15 | 15 | $17.16 | $257 |
By year: 2022 $84K for 1,052 services; 2023 $103K for 2,069 services; 2024 $110K for 1,980 services.
Medicare prescription drug claims, 2024
In 2024, the drug Richard S Zelkowitz prescribed most often to Medicare patients was Anastrozole, with 251 prescriptions and refills. In total Richard S Zelkowitz wrote 725 Medicare prescriptions that cost $2.2M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Anastrozole Generic | 251 | 505 | 99 | $3,600 |
| Exemestane Generic | 74 | 134 | 31 | $7,093 |
| Verzenio Abemaciclib | 74 | 74 | 13 | $1.1M |
| Letrozole Generic | 72 | 120 | 31 | $925 |
| Risedronate Sodium Generic | 39 | 107 | 16 | $4,561 |
| Tamoxifen Citrate Generic | 30 | 51 | 13 | $307 |
| Ibrance Palbociclib | 22 | 22 | Under 11 | $354K |
| Kisqali Ribociclib Succinate | 16 | 16 | Under 11 | $235K |
| Alendronate Sodium Generic | 13 | 36 | Under 11 | $117 |
| Dexamethasone Generic | 13 | 15 | Under 11 | $493 |
Brand drugs: 158 claims; generic drugs: 567 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Richard S Zelkowitz $8,946 ($8,946 in general payments such as food, travel and fees) from 9 companies. The largest payer was AstraZeneca Pharmaceuticals LP with $3,609.
| Company | Payments | Amount |
|---|---|---|
| AstraZeneca Pharmaceuticals LP AZN | 9 | $3,609 |
| Genentech USA, Inc. ROG.SW | 3 | $2,149 |
| Pfizer Inc. PFE | 1 | $1,300 |
| Eli Lilly and Company LLY | 1 | $1,000 |
| Gilead Sciences, Inc. GILD | 9 | $765 |
| Daiichi Sankyo Inc. 4568.T | 2 | $42.78 |
| Jazz Pharmaceuticals Inc. JAZZ | 2 | $34.62 |
| Novartis Pharmaceuticals Corporation NVS | 1 | $26.75 |
| Incyte Corporation INCY | 1 | $19.54 |
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.