Internal Medicine, Nephrology · Florissant, MO
NPI
1104075597
Since 2008
Specialty
Internal Medicine, Nephrology
Code 207RN0300X
Group practices
1
Medicare group memberships
Hospitals
5
Hospital affiliations
1265 Graham Rd Ste 1
Florissant, MO, 63031
Phone (314) 741-1600
Groups this clinician bills Medicare through
Medicare paid, 2024
$110K
1,179 services
Medicare patients, 2024
237
Average age 74
Drug cost, 2024
$907K
4,743 prescriptions
Company payments, 2025
$559
From 9 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Nicholas J Mayer was code 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), 292 times for 137 patients. In total Nicholas J Mayer billed 1,179 services in 19 codes, and Medicare paid $110K.
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2024-05-22.
| Code | Setting | Services | Patients | Paid per service | Medicare paid |
|---|---|---|---|---|---|
| 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 | 292 | 137 | $12.50 | $3,650 |
| 99215 Office E&M - Established | Office | 264 | 120 | $94.39 | $25K |
| 99233 Hospital E&M - Subsequent | Facility | 177 | 55 | $90.13 | $16K |
| 90960 ESRD Related Services (not dialysis) | Office | 120 | 32 | $264.58 | $32K |
| 99232 Hospital E&M - Subsequent | Facility | 109 | 34 | $59.97 | $6,537 |
| 99214 Office E&M - Established | Office | 67 | 56 | $83.37 | $5,586 |
| 99223 Hospital E&M - Initial | Facility | 46 | 39 | $131.90 | $6,067 |
| 99205 Office E&M - New | Office | 24 | 24 | $151.95 | $3,647 |
| 99231 Hospital E&M - Subsequent | Facility | 21 | 15 | $37.76 | $793 |
By year: 2022 $134K for 1,189 services; 2023 $122K for 970 services; 2024 $110K for 1,179 services.
Medicare prescription drug claims, 2024
In 2024, the drug Nicholas J Mayer prescribed most often to Medicare patients was Losartan Potassium, with 364 prescriptions and refills. In total Nicholas J Mayer wrote 4,743 Medicare prescriptions that cost $907K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Losartan Potassium Generic | 364 | 1,025 | 118 | $3,024 |
| Chlorthalidone Generic | 300 | 830 | 90 | $7,346 |
| Atorvastatin Calcium Generic | 253 | 672 | 91 | $2,124 |
| Spironolactone Generic | 227 | 649 | 73 | $1,546 |
| Calcitriol Generic | 187 | 520 | 55 | $4,377 |
| Carvedilol Generic | 185 | 532 | 61 | $1,388 |
| Olmesartan Medoxomil Generic | 181 | 513 | 63 | $2,511 |
| Nifedipine Er Nifedipine | 175 | 485 | 64 | $5,557 |
| Farxiga Dapagliflozin Propanediol | 169 | 217 | 33 | $117K |
| Torsemide Generic | 166 | 444 | 58 | $2,101 |
| Amlodipine Besylate Generic | 155 | 430 | 54 | $966 |
| Jardiance Empagliflozin | 129 | 254 | 29 | $145K |
| Indapamide Generic | 123 | 365 | 49 | $2,005 |
| Vitamin D2 Ergocalciferol (Vitamin D2) | 121 | 337 | 44 | $1,295 |
| Tamsulosin Hcl Generic | 95 | 284 | 33 | $1,048 |
Brand drugs: 728 claims; generic drugs: 4,000 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Nicholas J Mayer $559 ($559 in general payments such as food, travel and fees) from 9 companies. The largest payer was Otsuka America Pharmaceutical, Inc. with $177.
| Company | Payments | Amount |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. 4578.T | 3 | $177 |
| Travere Therapeutics, Inc. TVTX | 1 | $125 |
| GlaxoSmithKline, LLC. GSK | 1 | $122 |
| OPKO Pharmaceuticals, LLC | 2 | $33.72 |
| Lilly USA, LLC LLY | 1 | $28.83 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. 4578.T | 1 | $21.07 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | 1 | $20.67 |
| Vifor Pharma, Inc. | 1 | $16.12 |
| Abbvie Inc. ABBV | 1 | $15.63 |
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.