Mary Theresa Lasalvia, M.D.
Infectious Disease Physician · Boston, MA
Mary Theresa Lasalvia, M.D. is an infectious disease physician with a practice address in Boston, Massachusetts, and NPI 1679730543, issued on May 19, 2008. Check the license (Massachusetts 242508, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mary Theresa Lasalvia
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 242508 MA
Self-reported in NPPES; status is on the state search - Practice location
- 110 Francis St, Boston, MA 02215
- Phone
- (617) 632-7706
- Enumerated
- May 19, 2008
- Record last updated
- Mar 17, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (617) 632-7626
- Medicare enrollment
- Enrolled (PECOS I20110727000081); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 487 in Massachusetts → Look up another NPI →
Also registered at 110 Francis St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Elizabeth Alqueza, PA-CPhysician Assistant1972584100
- Abdulrahman Alturki, MBBS,MSC,FRCSCStudent in an Organized Health Care Education/Training Program1467905406
- Michael Apstein, MDGastroenterology Physician1609854603
Verify Mary Theresa Lasalvia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 242508Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average infectious disease physician in 2024
145 Medicare Part D claims for 31 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Doxycycline Hyclate44 claims
- Penicillin V Potassium24 claims
- Amoxicillin17 claims
- Doxycycline Monohydrate11 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: $52.76
1 payment: food and beverage; the largest payer was Averitas Pharma Inc. The 3,895 providers of this specialty with any payment received $4,362.19 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
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Theresa Lasalvia among 487 infectious disease physician records in Massachusetts
Mary Theresa Lasalvia, M.D. is one of 487 infectious disease physician records with a practice address in Massachusetts. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 63% of them.
- NPI issued2008 · 63% of these records are older, 32% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2007 · median 2003 among the 296 with a school on file
- Record last updated2016 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Massachusetts
There are 487 infectious disease physician records in Massachusetts.
All 487 in Massachusetts → Every provider in Boston → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Dan Barouch, MD PHDBoston, MA 022151992786974
- Sigall Bell, M.D.Boston, MA 022151225143118
- Clyde Crumpacker, M.D.Boston, MA 022151780786103
- George Eliopoulos, M.D.Boston, MA 022151891732087
- Camilla Graham, M.D.Boston, MA 022151952416919
- Adolf Karchmer, M.D.Boston, MA 022151508890278
- Kwan Kew Lai, MDBoston, MA 022151881618353
- Todd Pollack, M.D.Boston, MA 022151720026081
Common questions
What is Mary Theresa Lasalvia, M.D.'s NPI number?
Mary Theresa Lasalvia, M.D.'s National Provider Identifier (NPI) is 1679730543, issued on May 19, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mary Theresa Lasalvia, M.D. located?
The NPPES record lists a practice address at 110 Francis St, Boston, MA, 02215. Phone: (617) 632-7706. Providers update this record themselves, so call before visiting.
How can I verify Mary Theresa Lasalvia, M.D.'s license?
NPPES lists Massachusetts license number 242508, 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 Mary Theresa Lasalvia, M.D. prescribe under Medicare Part D?
In 2024, Mary Theresa Lasalvia, M.D. had 145 Medicare Part D claims for 31 beneficiaries; the average among infectious disease physician prescribers was 689. 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.