Internal Medicine, Nephrology · Saginaw, MI
NPI
1275692642
Since 2006
Specialty
Internal Medicine, Nephrology
Code 207RN0300X
Group practices
1
Medicare group memberships
Hospitals
5
Hospital affiliations
4677 Towne Centre Rd Ste 303, Medical Arts 3
Saginaw, MI, 48604
Phone (989) 401-5354
Groups this clinician bills Medicare through
Medicare paid, 2024
$268K
2,437 services
Medicare patients, 2024
438
Average age 75
Drug cost, 2024
$1.0M
4,495 prescriptions
Company payments, 2025
$7,708
From 4 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Claudia Zacharek was code 99233 (hospital e&m - subsequent), 467 times for 97 patients. In total Claudia Zacharek billed 2,437 services in 22 codes, and Medicare paid $268K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2021-03-29.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99233 Hospital E&M - Subsequent | Facility | 467 | 97 | $90.06 | $42K |
| 99214 Office E&M - Established | Office | 454 | 256 | $89.42 | $41K |
| 99232 Hospital E&M - Subsequent | Facility | 370 | 84 | $59.98 | $22K |
| 90960 ESRD Related Services (not dialysis) | Office | 261 | 33 | $265.43 | $69K |
| G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's | Office | 245 | 177 | $12.35 | $3,025 |
| 99223 Hospital E&M - Initial | Facility | 182 | 115 | $131.76 | $24K |
| 99215 Office E&M - Established | Office | 94 | 64 | $133.46 | $13K |
| 99213 Office E&M - Established | Office | 88 | 84 | $60.85 | $5,355 |
| 90961 ESRD Related Services (not dialysis) | Office | 80 | 16 | $217.80 | $17K |
| 99291 Critical Care E&M | Facility | 43 | 13 | $162.97 | $7,008 |
| 99204 Office E&M - New | Office | 34 | 34 | $121.54 | $4,132 |
| 99205 Office E&M - New | Office | 26 | 26 | $167.25 | $4,349 |
| 99496 Chronic, Principal, and Transitional Care Management | Office | 13 | 12 | $209.62 | $2,725 |
By year: 2022 $331K for 2,963 services; 2023 $276K for 2,221 services; 2024 $268K for 2,437 services.
Medicare prescription drug claims, 2024
In 2024, the drug Claudia Zacharek prescribed most often to Medicare patients was Spironolactone, with 389 prescriptions and refills. In total Claudia Zacharek wrote 4,495 Medicare prescriptions that cost $1.0M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Spironolactone Generic | 389 | 956 | 123 | $5,028 |
| Amlodipine Besylate Generic | 366 | 901 | 113 | $3,685 |
| Doxazosin Mesylate Generic | 361 | 924 | 112 | $7,606 |
| Hydralazine Hcl Generic | 301 | 580 | 76 | $5,539 |
| Furosemide Generic | 261 | 572 | 87 | $1,472 |
| Calcitriol Generic | 234 | 577 | 69 | $6,480 |
| Allopurinol Generic | 176 | 468 | 61 | $1,866 |
| Losartan Potassium Generic | 170 | 455 | 57 | $2,485 |
| Metoprolol Succinate Generic | 163 | 396 | 47 | $2,735 |
| Carvedilol Generic | 121 | 283 | 39 | $1,756 |
| Tamsulosin Hcl Generic | 111 | 280 | 37 | $2,791 |
| Lisinopril Generic | 108 | 297 | 41 | $1,171 |
| Atorvastatin Calcium Generic | 74 | 223 | 27 | $1,228 |
| Hydrochlorothiazide Generic | 72 | 188 | 24 | $290 |
| Pantoprazole Sodium Generic | 72 | 149 | 17 | $1,216 |
Brand drugs: 222 claims; generic drugs: 4,273 claims; opioid claims: 37.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Claudia Zacharek $7,708 ($7,708 in general payments such as food, travel and fees) from 4 companies. The largest payer was Genzyme Corporation with $7,313.
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.