Internal Medicine · Hartford, CT
NPI
1689786568
Since 2006
Specialty
Internal Medicine
Code 207R00000X
Group practices
1
Medicare group memberships
Hospitals
2
Hospital affiliations
85 Seymour St, Suite 900
Hartford, CT, 06106
Phone (860) 241-0700
Groups this clinician bills Medicare through
Medicare paid, 2024
$93K
1,124 services
Medicare patients, 2024
367
Average age 77
Drug cost, 2024
$1.6M
13,733 prescriptions
Company payments, 2025
$89.31
From 2 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by John S Wisniewski was code 99213 (office e&m - established), 482 times for 323 patients. In total John S Wisniewski billed 1,124 services in 23 codes, and Medicare paid $93K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2010-01-22.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99213 Office E&M - Established | Office | 482 | 323 | $60.68 | $29K |
| G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Office | 295 | 295 | $133.97 | $40K |
| 99214 Office E&M - Established | Office | 159 | 125 | $92.11 | $15K |
| 93000 Electrocardiogram | Office | 56 | 52 | $9.17 | $514 |
| G0008 Administration of influenza virus vaccine | Office | 41 | 41 | $33.07 | $1,356 |
| 90662 Vaccine Product | Office | 38 | 38 | $78.11 | $2,968 |
By year: 2022 $124K for 1,535 services; 2023 $108K for 1,319 services; 2024 $93K for 1,124 services.
Medicare prescription drug claims, 2024
In 2024, the drug John S Wisniewski prescribed most often to Medicare patients was Atorvastatin Calcium, with 1,159 prescriptions and refills. In total John S Wisniewski wrote 13,733 Medicare prescriptions that cost $1.6M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Atorvastatin Calcium Generic | 1,159 | 3,336 | 316 | $11K |
| Amlodipine Besylate Generic | 701 | 1,987 | 192 | $4,915 |
| Rosuvastatin Calcium Generic | 568 | 1,628 | 150 | $6,762 |
| Levothyroxine Sodium Generic | 481 | 1,355 | 126 | $5,084 |
| Losartan Potassium Generic | 347 | 989 | 99 | $3,443 |
| Hydrochlorothiazide Generic | 301 | 859 | 87 | $1,480 |
| Metformin Hcl Generic | 292 | 836 | 78 | $2,704 |
| Allopurinol Generic | 279 | 796 | 74 | $2,922 |
| Ozempic Semaglutide | 253 | 355 | 46 | $322K |
| Lisinopril Generic | 242 | 704 | 70 | $1,830 |
| Metoprolol Succinate Generic | 240 | 704 | 70 | $3,494 |
| Omeprazole Generic | 234 | 612 | 65 | $4,409 |
| Simvastatin Generic | 231 | 680 | 61 | $2,175 |
| Olmesartan Medoxomil Generic | 215 | 629 | 57 | $2,402 |
| Tamsulosin Hcl Generic | 207 | 512 | 54 | $3,662 |
Brand drugs: 1,856 claims; generic drugs: 11,801 claims; opioid claims: 480.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid John S Wisniewski $89.31 ($89.31 in general payments such as food, travel and fees) from 2 companies. The largest payer was Bayer Healthcare Pharmaceuticals Inc. with $58.01.
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.