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Internal Medicine

Natalie L. Cohen, MD

Works at hospitals in W Concord, MA · Burlington, MA · Boston, MA … · Massachusetts

Summary

Dr. Natalie L. Cohen, MD is an internal medicine doctor at 321 Main St, Acton, MA 01720. Phone: (978) 635-8700. Accepts Medicare assignment. In 2024, Natalie L. Cohen had 265 Original Medicare patients and 2,085 services. NPI 1700179678. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Natalie L. Cohen, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Natalie L. Cohen accept Medicare assignment?
Yes. Medicare's clinician data says Natalie L. Cohen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Natalie L. Cohen see?
In 2024, CMS data shows 265 Original Medicare patients and 2,085 services for Natalie L. Cohen. This counts Original Medicare only and measures volume, not quality.
What is Natalie L. Cohen's NPI number?
1700179678. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Natalie L. Cohen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients265
Services billed to Medicare2,085
Different services or procedures110
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)321 services
  2. Insertion of needle into vein for collection of blood sample (36415)265 services
  3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)147 services
  4. Blood test, lipids (cholesterol and triglycerides) (80061)124 services
  5. Blood test, comprehensive group of blood chemicals (80053)117 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol67%
  • High blood pressure55%
  • Arthritis35%
  • Anxiety30%
  • Osteoporosis26%
  • Depression19%

Hospitals where Natalie L. Cohen works

Medicare's Facility Affiliation Data lists Natalie L. Cohen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Natalie L. Cohen is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Natalie L. Cohen as a member of this group (CMS data updated October 2, 2026).

  • Acton Medical Associates PC34 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Acton

Clinicians with the same Medicare primary specialty in Acton, MA — not a recommendation.

All internal medicine doctors in Acton →

Other clinicians in Acton Medical Associates PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Massachusetts Medical School
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1700179678
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians