Zachary S. Wallace, M.D.
Rheumatology Physician · Boston, MA
Zachary S. Wallace, M.D. is a rheumatology physician with a practice address in Boston, Massachusetts, and NPI 1548580913, issued on Jun 8, 2010. Check the license (Massachusetts 253529, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Zachary S. Wallace
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 253529 MA
Self-reported in NPPES; status is on the state search - Practice location
- Massachusetts General Hospital, Boston, MA 02114
- Phone
- (617) 726-2865
- Enumerated
- Jun 8, 2010
- Record last updated
- Apr 1, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150106001416); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at Massachusetts General Hospital
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Zachary S. Wallace in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 253529Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average rheumatology physician in 2024
313 Medicare Part D claims for 58 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Prednisone37 claims
- Methotrexate29 claims
- Tavneos25 claims
- Simponi23 claims
- Hydroxychloroquine Sulfate16 claims
- Tramadol Hcl15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $66,085.10
45 payments; by number, the most common kind was consulting fee; the largest payer was Amgen Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- The General Hospital CorporationWaltham, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rheumatology Physician providers in Massachusetts
There are 343 rheumatology physician records in Massachusetts.
Other rheumatology physician records in Massachusetts
- Maria Abruzzo, M.D.Gardner, MA1215036132
- Munir Ahmad, M.D.Palmer, MA1124126602
- Syed Ahmed, M.D.Boston, MA1407829948
- Fatima Alduraibi, MD, PHDBoston, MA1285155135
- Ghousia Alikhan, M.D.Holyoke, MA1801275383
- Antonios Aliprantis, M.D.Chestnut Hill, MA1598723090
- Juliann AllenHolyoke, MA1356835318
- Laura Amorese-O'Connell, MDAttleboro, MA1518278290
- Paul Anderson, M.D., PH.D.Boston, MA1235127432
- Ronald Anderson, MDBoston, MA1154388478
Common questions
What is Zachary S. Wallace, M.D.'s NPI number?
Zachary S. Wallace, M.D.'s National Provider Identifier (NPI) is 1548580913, issued on Jun 8, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Zachary S. Wallace, M.D. located?
The NPPES record lists a practice address at Massachusetts General Hospital, Boston, MA, 02114. Phone: (617) 726-2865. Providers update this record themselves, so call before visiting.
How can I verify Zachary S. Wallace, M.D.'s license?
NPPES lists Massachusetts license number 253529, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Zachary S. Wallace, M.D. prescribe under Medicare Part D?
In 2024, Zachary S. Wallace, M.D. had 313 Medicare Part D claims for 58 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.