Mary T. Schwartz, MD
Internal Medicine Physician · Newburyport, MA
Mary T. Schwartz, MD is an internal medicine physician with a practice address in Newburyport, Massachusetts, and NPI 1699782763, issued on Aug 2, 2006. Check the license (Massachusetts 154489, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mary T. Schwartz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 154489 MA
Self-reported in NPPES; status is on the state search - Practice location
- 260 Merrimac St, Newburyport, MA 01950
- Phone
- (978) 499-7200
- Enumerated
- Aug 2, 2006
- Record last updated
- Oct 20, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (978) 499-7288
- Medicaid ID
- 3170764 MA
- Medicare enrollment
- Enrolled (PECOS I20090318000223); accepts Medicare assignment
- Medical or professional school
- Hahnemann University College Of Medicine, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 260 Merrimac St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kimberly Carter, CNPFamily Nurse Practitioner1801260344
- Deborah Casson, N.P.Family Nurse Practitioner1639361892
- Maureen Cullen, NPNurse Practitioner1578522702
- Jennah Dieter, D.C.Chiropractor1508873795
Verify Mary T. Schwartz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 154489Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,512 Medicare Part D claims for 321 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 243 claims were for opioids.
Most prescribed
- Lorazepam162 claims
- Amlodipine Besylate133 claims
- Lisinopril120 claims
- Tramadol Hcl119 claims
- Clonazepam108 claims
- Losartan Potassium85 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.
Bills Medicare through 2 group practices
- Mass General Brigham Community Physicians IncGeorgetown, MA
- Mass General Brigham Medical Group Northern Massachusetts IncDanvers, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary T. Schwartz among 6,825 internal medicine physician records in Massachusetts
Mary T. Schwartz, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1990 · median 2004 among the 4,103 with a school on file
- Record last updated2016 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 internal medicine physician records list a practice address in Newburyport
They are 22 of the 558 NPPES records with a practice address in Newburyport, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Newburyport → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Stephen Beaudoin, M.D.Newburyport, MA 019501902808124
- Anthony Eaton, M.D.Newburyport, MA 019501831193101
- Daniel Eyink, M.D.Newburyport, MA 019501730160409
- Christopher Harris, M.D.Newburyport, MA 019501912901604
- William Ingram, M.D.Newburyport, MA 019501689679268
- Kimberly Kersten, DONewburyport, MA 019501912903030
- Theresa Leak-Gonzalez, MDNewburyport, MA 019501679587265
- Anthony Lopez, M.D.Newburyport, MA 019501770541815
Common questions
What is Mary T. Schwartz, MD's NPI number?
Mary T. Schwartz, MD's National Provider Identifier (NPI) is 1699782763, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary T. Schwartz, MD located?
The NPPES record lists a practice address at 260 Merrimac St, Newburyport, MA, 01950. Phone: (978) 499-7200. Providers update this record themselves, so call before visiting.
How can I verify Mary T. Schwartz, MD's license?
NPPES lists Massachusetts license number 154489, 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 T. Schwartz, MD prescribe under Medicare Part D?
In 2024, Mary T. Schwartz, MD had 2,512 Medicare Part D claims for 321 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.