NPPES file of Aug 9, 2026

Natalie L. Cohen, MD

Internal Medicine Physician · Acton, MA

Natalie L. Cohen, MD is an internal medicine physician with a practice address in Acton, Massachusetts, and NPI 1700179678, issued on May 25, 2011. Check the license (Massachusetts 258083, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1700179678
Name
Natalie L. Cohen
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
258083 MA
Self-reported in NPPES; status is on the state search
Practice location
321 Main St, Acton, MA 01720
Phone
(978) 635-8700
Enumerated
May 25, 2011
Record last updated
Feb 2, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(978) 635-8920
Medicaid ID
110099716A MA
Medicare enrollment
Enrolled (PECOS I20140718000710); accepts Medicare assignment
Medical or professional school
University Of Massachusetts Medical School, 2011
Telehealth
Offers telehealth (CMS)
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 321 Main St

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

  1. Christopher Bechtel, NPNurse Practitioner1144578626
  2. Meryl BergerNurse Practitioner1922600220
  3. Louis Berk, M.D.Family Medicine Physician1730501875
  4. Elizabeth Berman, RDN, LDNRegistered Dietitian1679949143
  5. Christine Brown, M.D.Internal Medicine Physician1588861660
  6. Samuel BrownClinical Social Worker1336576065

Verify Natalie L. Cohen 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 258083
    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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28% fewer Medicare Part D claims than the average internal medicine physician in 2024

2,273 Medicare Part D claims for 372 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 64 claims were for opioids.

  1. Natalie Cohen2,273
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium282 claims
  2. Amlodipine Besylate144 claims
  3. Lisinopril130 claims
  4. Losartan Potassium100 claims
  5. Hydrochlorothiazide66 claims
  6. Levothyroxine Sodium64 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 one group practice

  1. Acton Medical Associates PCActon, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Natalie L. Cohen among 6,825 internal medicine physician records in Massachusetts

Natalie L. Cohen, 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 2011, is newer than 65% of them.

  • NPI issued2011 · 65% of these records are older, 33% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2011 · median 2004 among the 4,103 with a school on file
  • Record last updated2017 · 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).

17 internal medicine physician records list a practice address in Acton

They are 17 of the 556 NPPES records with a practice address in Acton, and 6,825 internal medicine physician records in Massachusetts.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Christine Brown, M.D.Acton, MA 017201588861660
  2. Amy Churchill, MDActon, MA 017201033171749
  3. Peter Demartino, M.D.Acton, MA 017201043292360
  4. Allessandro Girolamo, M.D.Acton, MA 017201689636300
  5. Ingrid Gorman, M.D.Acton, MA 017201053302158
  6. Edwin Knights, MDActon, MA 017201801885512
  7. Deborah Kovacs, MDActon, MA 017201386634772
  8. Teli Leung-Galecki, M.D.Acton, MA 017201043363088

Common questions

What is Natalie L. Cohen, MD's NPI number?

Natalie L. Cohen, MD's National Provider Identifier (NPI) is 1700179678, issued on May 25, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Natalie L. Cohen, MD located?

The NPPES record lists a practice address at 321 Main St, Acton, MA, 01720. Phone: (978) 635-8700. Providers update this record themselves, so call before visiting.

How can I verify Natalie L. Cohen, MD's license?

NPPES lists Massachusetts license number 258083, 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 Natalie L. Cohen, MD prescribe under Medicare Part D?

In 2024, Natalie L. Cohen, MD had 2,273 Medicare Part D claims for 372 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.