Theresa Marie Leak-Gonzalez, MD
Internal Medicine Physician · Newburyport, MA
Theresa Marie Leak-Gonzalez, MD is an internal medicine physician with a practice address in Newburyport, Massachusetts, and NPI 1679587265, issued on Jul 28, 2006. Check the license (Massachusetts 235395, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Theresa Marie Leak-Gonzalez
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 235395 MA
Self-reported in NPPES; status is on the state search - Practice location
- 260 Merrimac St, Newburyport, MA 01950
- Phone
- (978) 499-7200
- Enumerated
- Jul 28, 2006
- Record last updated
- Nov 16, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (978) 499-7216
- Medicaid IDs
- 110079874A MA
30207840 NH - 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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- Maureen Cullen, NPNurse Practitioner1578522702
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Verify Theresa Marie Leak-Gonzalez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 235395Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
14 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Theresa Marie Leak-Gonzalez among 6,825 internal medicine physician records in Massachusetts
Theresa Marie Leak-Gonzalez, 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 fileNo · 60% of these records are
- Record last updated2012 · 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
- Anthony Lopez, M.D.Newburyport, MA 019501770541815
- Paul Mendelson, M.D.Newburyport, MA 019501396727228
Common questions
What is Theresa Marie Leak-Gonzalez, MD's NPI number?
Theresa Marie Leak-Gonzalez, MD's National Provider Identifier (NPI) is 1679587265, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Theresa Marie Leak-Gonzalez, 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 Theresa Marie Leak-Gonzalez, MD's license?
NPPES lists Massachusetts license number 235395, 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 Theresa Marie Leak-Gonzalez, MD prescribe under Medicare Part D?
In 2024, Theresa Marie Leak-Gonzalez, MD had 14 Medicare Part D claims; 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.