Doctor profile · Federal record
Dr. Zachary Wallace, M.D.
Rheumatology Physician (CMS: Rheumatology) · Internal Medicine Physician · Boston, MA
- NPI 1548580913
- Accepts Medicare
- 16 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
Massachusetts General Hospital, 55 Fruit St.
Boston, MA 02114
(617) 726-2865
Credentials & registration
- NPI registered
- June 2010 — 16 yrs on file
- Profile last updated
- April 1, 2015
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- Massachusetts #253529
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1548580913. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
270
Distinct HCPCS
4
Medicare allowed
$31,422
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 178 | 105 | $103 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 58 | 44 | $149 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 19 | 12 | $84 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 15 | 15 | $184 |
In context: peer comparison
Among 41 peers in Boston Rheumatology Physician, average services per provider: 68. This provider delivers 4.0× the peer median.Open Payments
Industry payments received
All-time total
$66,085
Transactions
45
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Amgen INC. | 36 | $55,595.33 | |
| Alexion Pharmaceuticals, INC. | 6 | $6,009.62 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 1 | $3,920.00 | |
| Otsuka Pharmaceutical Co., LTD. | 1 | $480.00 | |
| Novartis Pharmaceuticals Corporation | 1 | $80.15 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
305
Patients
49
Total drug cost
$637,289
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 61 | 24 | $703 |
| Methotrexate (Methotrexate Sodium) | Brand | 38 | 13 | $1,411 |
| Hydroxychloroquine Sulfate | Generic | 30 | 12 | $2,319 |
| Tramadol Hcl | Generic | 24 | 0 | $106 |
| Allopurinol | Generic | 18 | 0 | $376 |
| Tavneos (Avacopan) | Brand | 18 | 0 | $281,791 |
| Diclofenac Sodium | Generic | 16 | 0 | $391 |
| Sulfasalazine | Generic | 15 | 0 | $438 |
| Omeprazole | Generic | 14 | 0 | $191 |
| Humira Pen (Adalimumab) | Brand | 13 | 0 | $86,912 |
Hospital affiliations
Frequently asked questions
What is Dr. Zachary Wallace's medical specialty?
Dr. Zachary Wallace practices Rheumatology Physician in Boston, MA.
Where does Dr. Zachary Wallace practice?
Dr. Zachary Wallace practices at Massachusetts General Hospital, Boston, MA 02114. Office phone: 6177262865.
What is Dr. Zachary Wallace's NPI?
Dr. Zachary Wallace's National Provider Identifier (NPI) is 1548580913, issued by NPPES.
Does Dr. Zachary Wallace accept Medicare assignment?
Yes. Dr. Zachary Wallace accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Zachary Wallace commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.