Doctor Profile

Primary Care · Internal Medicine

Mark J. Messenger

MD · Internal Medicine · Icahn School Of Medicine At Mount Sinai
45 DAN RD
Canton, MA 02021
✓ Accepts Medicare 🎓 47+ Years Practicing
450
Medicare Patients / yr
5
Procedures Billed
47
Years Practicing
2
Hospital Affiliations
Data Source: Identity from NPPES (2026). Procedure & patient volume from CMS Medicare Provider Utilization & Payment Data (2023). Hospital affiliations from CMS Physician Compare. We display publicly reported data — no personal information required to view any of it.
Reviewed by: Wes Ward, Founder & Data Lead • View our methodology

Important: We are not affiliated with Medicare, CMS, or Mark J. Messenger's practice. This page displays publicly available CMS data to help you research Medicare providers. We do not sell insurance or represent any insurance company. For official enrollment and complete plan information, visit Medicare.gov or call 1-800-MEDICARE.

Medicare Plans That Cover Dr. Messenger

See which plans Dr. Messenger accepts

We're pulling plan acceptance data directly from insurance carrier provider directories. Until that feed is live for Massachusetts, the fastest way to find a Medicare plan that covers Dr. Messenger is to compare every Medicare Advantage and Part D plan available near 02021, MA — the Internal Medicine's office can quickly confirm which of the top local plans they accept.

Compare Medicare Plans near 02021, MA →

Or call the office at (781) 867-2050 to confirm acceptance directly.

What Dr. Messenger Does

Dr. Messenger served 450 Medicare patients across 646 services in the latest CMS reporting year. That's 31% below the average Internal Medicine in Massachusetts (656 patients across 3,389 doctors).

ProcedureServicesMedicare Patients
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)327183
Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)169121
Residence visit for new patient with moderate level of medical decision making, per day, if using time, at least 60 minutes (99344)7878
Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes (99345)3939
Transitional care management services for problem of at least moderate complexity (99495)3329

How to read this: "Services" are the total times Dr. Messenger billed Medicare for each procedure in the latest reporting year. "Patients" counts unique Medicare beneficiaries. Procedures are shown in plain English; the underlying HCPCS codes are available on request.

Hospital Affiliations

Dr. Messenger is affiliated with 2 hospitals according to CMS Physician Compare. Below are the 2 hospitals with full quality profiles on our site. Hospital network status depends on your Medicare Advantage plan — always verify before enrolling.

Lahey Hospital & Medical Center, Burlington

Burlington, MA
★★★★★ 5/5 CMS Rating

North Shore Medical Center -

Salem, MA
★★★★☆ 4/5 CMS Rating

Practice Location & Telehealth Readiness

Dr. Messenger practices at the address below. If you're evaluating Medicare coverage, location matters for in-network access and — when Dr. Messenger offers telehealth — broadband availability at your home matters for virtual visits.

Address: 45 DAN RD, Canton, MA 02021
Phone: (781) 867-2050

Area Safety Grade

A-

Block-level crime analysis from CrimeGrade.org.

Practice Accessibility

43 min

Average commute time in this zip · 67% of residents drive to work. Practical context for patients deciding whether to make the trip. See the full neighborhood profile at BestNeighborhood.org.

Telehealth Readiness

99.9713

Households with fiber broadband — important for reliable virtual visits. Check your address at ISPReports.org.

Get directions on Google Maps →

Other Primary Care Doctors near 02021, MA

If Dr. Messenger isn't accepting new patients or isn't in your plan's network, these are the closest primary care doctors near 02021, MA:

DoctorSpecialtyMedicare Patients / yrDistance
Charlene C. HollinsNurse Practitioner59<1 mi
Timothy P. Lowney, Jr.Family Practice753<1 mi
Rachael A. MarcantonioGeneral Practice1.3K<1 mi
Sean HaleyFamily Practice931<1 mi
Timothy P. LowneyFamily Practice1.2K<1 mi
Zinaida LevinInternal Medicine644<1 mi

View all primary care doctors near 02021, MA →

How to Use This Information

Choosing a Medicare plan that covers Dr. Messenger takes three steps:

Compare Medicare Plans near 02021, MA → All Doctors near 02021, MA

Mark J. Messenger: Common Questions

Does Dr. Messenger accept Medicare?
Yes. Dr. Messenger is enrolled with Medicare and listed in the CMS Provider Enrollment, Chain, and Ownership System (PECOS). Whether a specific Medicare Advantage plan covers Dr. Messenger depends on that plan's provider network. Compare Medicare plans near 02021, MA →
Where is Dr. Messenger's office?
Dr. Messenger practices at 45 DAN RD, Canton, MA 02021. Phone: (781) 867-2050.
What Medicare plans does Dr. Messenger accept?
Original Medicare (Parts A & B) is accepted. Medicare Advantage plan acceptance varies by carrier and plan year. Call the office at (781) 867-2050 to confirm your specific plan is accepted, or compare all Medicare plans near 02021, MA to see available options.
Does Dr. Messenger offer telehealth visits?
CMS does not currently list Dr. Messenger as offering telehealth. Call the office at (781) 867-2050 to confirm whether virtual visits are available.
How experienced is Dr. Messenger?
Dr. Messenger graduated in 1979 and has been practicing for approximately 47 years. In the latest CMS reporting year, Dr. Messenger treated 450 Medicare patients across 5 distinct procedure types.
How do I know if Dr. Messenger is in-network for my Medicare plan?
Network status varies by plan. The best verification steps: (1) check your plan's provider directory at the carrier's website, (2) call the office at (781) 867-2050 and ask which plans they currently accept, and (3) call the number on the back of your Medicare card. Print our doctor questions checklist →

About the Reviewer

Wes Ward

Wes Ward

Founder & Data Lead

Wes Ward reviews all doctor profiles and methodology for data accuracy. Every Medicare provider page on this site — including the utilization statistics, hospital affiliations, and geocoded practice address — goes through his data-validation pipeline before publication. We display only publicly available CMS data; you never need to enter personal information to see any of it.

With 25+ years in data analytics — including work with highly regulated genomic data at Ancestry.com — Wes brings enterprise-level rigor to healthcare transparency. He is also a co-founder of BestNeighborhood.org (neighborhood data), CrimeGrade.org (block-level safety analytics), and ISPReports.org (broadband availability for telehealth). Those sister sites power the location and telehealth-readiness context on this page.

View full profile →LinkedIn

Data sources: CMS NPPES (2026), CMS Medicare Provider Utilization & Payment Data (2023), CMS Physician Compare, CrimeGrade.org, BestNeighborhood.org, ISPReports.org. This page is for informational purposes only. Always verify coverage directly with the plan and practice. Read our full methodology →Privacy policy

Medicare Resources

Choosing the right Medicare plan involves more than just doctor coverage. These guides help you evaluate the full picture:

Medicare Plans for Conditions Treated by Primary Care Specialists

See which Medicare plans score highest for conditions commonly managed by this specialty in 02021, MA:

Does your Medicare plan cover Dr. Messenger?

Compare Plans near 02021, MA →