NPPES file of Aug 9, 2026

Mary Twarog

Anesthesiology Physician · Newton, MA

Mary Twarog is an anesthesiology physician with a practice address in Newton, Massachusetts, and NPI 1699425207, issued on Mar 25, 2022. Check the license (Massachusetts 1027399, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1699425207
Name
Mary Twarog
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
1027399 MA
Self-reported in NPPES; status is on the state search
Practice location
2014 Washington St, Newton, MA 02462
Phone
(617) 243-6000
Enumerated
Mar 25, 2022
Record last updated
Jul 31, 2026
Medicare enrollment
Enrolled (PECOS I20260514001341); may accept Medicare assignment
Medical or professional school
State University Of New York At Buffalo School Of Medicine, 2022
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2014 Washington St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nooshin Abbasi, MD MPHInternal Medicine Physician1831888353
  2. Todd Abbott, M.D.Anatomic Pathology & Clinical Pathology Physician1013057454
  3. Tatiana Abrantes, MDStudent in an Organized Health Care Education/Training Program1962107250
  4. Maura Adrian, LICSWSocial Worker1083106918
  5. Davies Agyekum, M.D., PHDAnesthesiology Physician1134651425
  6. Tarik Alkasab, M.D., PH.D.Diagnostic Radiology Physician1154305803

Verify Mary Twarog in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 1027399
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Mary Twarog among 2,089 anesthesiology physician records in Massachusetts

Mary Twarog is one of 2,089 anesthesiology physician records with a practice address in Massachusetts. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2022, is newer than 93% of them.

  • NPI issued2022 · 93% of these records are older, 4% newer
  • In a Medicare fileNo · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2022 · median 2008 among the 1,472 with a school on file
  • Record last updated2026 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

47 anesthesiology physician records list a practice address in Newton

They are 47 of the 2,975 NPPES records with a practice address in Newton, and 2,089 anesthesiology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Kimball Atwood, MDNewton, MA 024621861423345
  2. Margery Brenner, MDNewton, MA 024621548291388
  3. Kyle Byrne, MDNewton, MA 024621518998954
  4. Dana Gvildys, MDNewton, MA 024621588695068
  5. Martha Hauch, MDNewton, MA 024621629015565
  6. Mark Hershey, MDNewton, MA 024621396776878
  7. Jacob Joffe, MDNewton, MA 024621235160631
  8. Kenneth Leng, M.D.Newton, MA 024621700823440

Common questions

What is Mary Twarog's NPI number?

Mary Twarog's National Provider Identifier (NPI) is 1699425207, issued on Mar 25, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Mary Twarog located?

The NPPES record lists a practice address at 2014 Washington St, Newton, MA, 02462. Phone: (617) 243-6000. Providers update this record themselves, so call before visiting.

How can I verify Mary Twarog's license?

NPPES lists Massachusetts license number 1027399, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.