Internal Medicine, Nephrology · Fullerton, CA
NPI
1831305879
Since 2007
Specialty
Internal Medicine, Nephrology
Code 207RN0300X
Group practices
1
Medicare group memberships
Hospitals
1
Hospital affiliations
100 E Valencia Mesa Dr Ste 100
Fullerton, CA, 92835
Phone (714) 992-5581
Groups this clinician bills Medicare through
Medicare paid, 2024
$253K
2,915 services
Medicare patients, 2024
483
Average age 75
Drug cost, 2024
$471K
2,047 prescriptions
Company payments, 2025
$198
From 5 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Nancy S Hernandez was code 99232 (hospital e&m - subsequent), 653 times for 220 patients. In total Nancy S Hernandez billed 2,915 services in 20 codes, and Medicare paid $253K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2023-11-21.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99232 Hospital E&M - Subsequent | Facility | 653 | 220 | $61.66 | $40K |
| 99457 E&M - Miscellaneous | Office | 427 | 43 | $39.35 | $17K |
| 99214 Office E&M - Established | Office | 351 | 152 | $69.83 | $25K |
| 99233 Hospital E&M - Subsequent | Facility | 351 | 140 | $92.90 | $33K |
| 90960 ESRD Related Services (not dialysis) | Office | 243 | 42 | $267.48 | $65K |
| 99454 E&M - Miscellaneous | Office | 230 | 33 | $41.11 | $9,456 |
| 99458 E&M - Miscellaneous | Office | 168 | 36 | $30.89 | $5,189 |
| 99223 Hospital E&M - Initial | Facility | 166 | 143 | $134.30 | $22K |
| 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 | 134 | 65 | $12.79 | $1,714 |
| 90966 ESRD Related Services (not dialysis) | Office | 93 | 11 | $231.80 | $22K |
| 90961 ESRD Related Services (not dialysis) | Office | 32 | 25 | $230.77 | $7,385 |
| 99204 Office E&M - New | Office | 22 | 22 | $121.17 | $2,666 |
By year: 2022 $308K for 2,823 services; 2023 $293K for 2,815 services; 2024 $253K for 2,915 services.
Medicare prescription drug claims, 2024
In 2024, the drug Nancy S Hernandez prescribed most often to Medicare patients was Calcitriol, with 159 prescriptions and refills. In total Nancy S Hernandez wrote 2,047 Medicare prescriptions that cost $471K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Calcitriol Generic | 159 | 317 | 38 | $1,915 |
| Allopurinol Generic | 124 | 335 | 39 | $1,010 |
| Sevelamer Carbonate Generic | 101 | 173 | 30 | $22K |
| Prosol Parenteral Amino Acid 20% No.1 | 99 | 99 | Under 11 | $13K |
| Furosemide Generic | 98 | 239 | 35 | $756 |
| Lokelma Sodium Zirconium Cyclosilicate | 96 | 153 | 27 | $49K |
| Hydralazine Hcl Generic | 84 | 204 | 27 | $1,062 |
| Calcium Acetate Generic | 71 | 122 | 21 | $7,684 |
| Amlodipine Besylate Generic | 62 | 153 | 22 | $594 |
| Lisinopril Generic | 59 | 160 | 18 | $593 |
| Febuxostat Generic | 56 | 110 | 13 | $5,838 |
| Ciprofloxacin Hcl Generic | 50 | 50 | 41 | $270 |
| Potassium Chloride Generic | 42 | 93 | 17 | $1,490 |
| Losartan Potassium Generic | 40 | 116 | 13 | $499 |
| Atorvastatin Calcium Generic | 38 | 106 | 12 | $379 |
Brand drugs: - claims; generic drugs: 1,684 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Nancy S Hernandez $198 ($198 in general payments such as food, travel and fees) from 5 companies. The largest payer was Novartis Pharmaceuticals Corporation with $128.
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.