Internal Medicine, Gastroenterology · San Francisco, CA
NPI
1720009160
Since 2006
Specialty
Internal Medicine, Gastroenterology
Code 207RG0100X
Group practices
1
Medicare group memberships
Hospitals
5
Hospital affiliations
1100 Van Ness Ave
San Francisco, CA, 94109
Phone (415) 600-1000
Groups this clinician bills Medicare through
Medicare paid, 2024
$123K
1,066 services
Medicare patients, 2024
461
Average age 69
Drug cost, 2024
$1.7M
1,898 prescriptions
Company payments, 2025
$46K
From 9 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Richard T Frederick was code 99233 (hospital e&m - subsequent), 290 times for 65 patients. In total Richard T Frederick billed 1,066 services in 22 codes, and Medicare paid $123K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2021-08-26.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99233 Hospital E&M - Subsequent | Facility | 290 | 65 | $104.30 | $30K |
| 99215 Office E&M - Established | Facility | 241 | 145 | $120.28 | $29K |
| 99215 Office E&M - Established | Office | 213 | 148 | $128.24 | $27K |
| 99223 Hospital E&M - Initial | Facility | 48 | 42 | $153.23 | $7,355 |
| 99205 Office E&M - New | Office | 39 | 39 | $171.00 | $6,669 |
| 99214 Office E&M - Established | Office | 39 | 35 | $89.01 | $3,471 |
| 99214 Office E&M - Established | Facility | 37 | 35 | $76.43 | $2,828 |
| 91200 Standard X-ray | Office | 29 | 29 | $25.34 | $735 |
| 99291 Critical Care E&M | Facility | 25 | 15 | $184.40 | $4,610 |
| 99204 Office E&M - New | Office | 16 | 16 | $114.95 | $1,839 |
| 99205 Office E&M - New | Facility | 13 | 13 | $139.10 | $1,808 |
By year: 2022 $119K for 1,030 services; 2023 $116K for 1,001 services; 2024 $123K for 1,066 services.
Medicare prescription drug claims, 2024
In 2024, the drug Richard T Frederick prescribed most often to Medicare patients was Tacrolimus, with 248 prescriptions and refills. In total Richard T Frederick wrote 1,898 Medicare prescriptions that cost $1.7M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Tacrolimus Generic | 248 | 570 | 49 | $30K |
| Ursodiol Generic | 241 | 481 | 54 | $40K |
| Vemlidy Tenofovir Alafenamide | 151 | 175 | 21 | $239K |
| Xifaxan Rifaximin | 122 | 124 | 18 | $403K |
| Entecavir Generic | 120 | 305 | 29 | $47K |
| Lactulose Generic | 72 | 102 | 20 | $4,029 |
| Furosemide Generic | 69 | 140 | 25 | $553 |
| Prednisone Generic | 65 | 119 | 19 | $684 |
| Pantoprazole Sodium Generic | 65 | 126 | 23 | $810 |
| Mycophenolate Mofetil Generic | 62 | 145 | 20 | $12K |
| Spironolactone Generic | 54 | 119 | 22 | $759 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 52 | 58 | 12 | $247 |
| Eplerenone Generic | 27 | 44 | Under 11 | $755 |
| Mycophenolic Acid Mycophenolate Sodium | 27 | 57 | Under 11 | $5,047 |
| Rezdiffra Resmetirom | 24 | 24 | Under 11 | $91K |
Brand drugs: - claims; generic drugs: 1,409 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Richard T Frederick $46K ($46K in general payments such as food, travel and fees) from 9 companies. The largest payer was Madrigal Pharmaceuticals with $42K.
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.