Internal Medicine, Rheumatology · Boston, MA
NPI
1548580913
Since 2010
Specialty
Internal Medicine, Rheumatology
Code 207RR0500X
Group practices
2
Medicare group memberships
Hospitals
3
Hospital affiliations
Massachusetts General Hospital, 55 Fruit St.
Boston, MA, 02114
Phone (617) 726-2865
Groups this clinician bills Medicare through
Medicare paid, 2024
$20K
224 services
Medicare patients, 2024
115
Average age 74
Drug cost, 2024
$1.0M
313 prescriptions
Company payments, 2025
$202
From 1 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Zachary S Wallace was code 99214 (office e&m - established), 137 times for 89 patients. In total Zachary S Wallace billed 224 services in 10 codes, and Medicare paid $20K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2015-04-01.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99214 Office E&M - Established | Facility | 137 | 89 | $76.11 | $10K |
| 99215 Office E&M - Established | Facility | 38 | 29 | $116.09 | $4,412 |
By year: 2022 $24K for 296 services; 2023 $26K for 302 services; 2024 $20K for 224 services.
Medicare prescription drug claims, 2024
In 2024, the drug Zachary S Wallace prescribed most often to Medicare patients was Prednisone, with 37 prescriptions and refills. In total Zachary S Wallace wrote 313 Medicare prescriptions that cost $1.0M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Prednisone Generic | 37 | 82 | 18 | $329 |
| Methotrexate Methotrexate Sodium | 29 | 70 | 12 | $1,221 |
| Tavneos Avacopan | 25 | 25 | Under 11 | $404K |
| Simponi Golimumab | 23 | 23 | Under 11 | $129K |
| Hydroxychloroquine Sulfate Generic | 16 | 48 | Under 11 | $1,242 |
| Tramadol Hcl Generic | 15 | 15 | Under 11 | $41.89 |
| Humira Pen Adalimumab | 12 | 12 | Under 11 | $79K |
| Nucala Mepolizumab | 12 | 12 | Under 11 | $135K |
| Allopurinol Generic | 12 | 36 | Under 11 | $172 |
| Actemra Actpen Tocilizumab | 11 | 13 | Under 11 | $47K |
| Sulfasalazine Generic | 11 | 11 | Under 11 | $199 |
Brand drugs: - claims; generic drugs: 176 claims; opioid claims: 15.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Zachary S Wallace $202 (- in general payments such as food, travel and fees and $202 for research) from 1 company. The largest payer was Amgen Inc. with $202.
| Company | Payments | Amount |
|---|---|---|
| Amgen Inc. AMGN | 1 | $202 |
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.