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Preventive Medicine

Dennis J. Teehan Jr., MD

Works at hospitals in Needham, MA · Boston, MA · Jamaica Plain, MA · Massachusetts

Summary

Dr. Dennis J. Teehan Jr., MD is a preventive medicine doctor at 200 Providence Hwy, Suite 203, Dedham, MA 02026. Phone: (781) 326-1464. Accepts Medicare assignment. In 2024, Dennis J. Teehan Jr. had 99 Original Medicare patients and 439 services. NPI 1306006945. 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 Dennis J. Teehan Jr., 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 Dennis J. Teehan Jr. accept Medicare assignment?
Yes. Medicare's clinician data says Dennis J. Teehan Jr. 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 Dennis J. Teehan Jr. see?
In 2024, CMS data shows 99 Original Medicare patients and 439 services for Dennis J. Teehan Jr.. This counts Original Medicare only and measures volume, not quality.
What is Dennis J. Teehan Jr.'s NPI number?
1306006945. 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 Dennis J. Teehan Jr., 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 patients99
Services billed to Medicare439
Different services or procedures16
Participating Medicare providerYes
Average age of these patients75

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)201 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)87 services
  3. Blood test, lipids (cholesterol and triglycerides) (80061)48 services
  4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)32 services
  5. Hemoglobin a1c level (83036)30 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 blood pressure75%
  • High cholesterol75%
  • Diabetes35%
  • Arthritis30%
  • Ischemic heart disease28%
  • Chronic kidney disease20%

Hospitals where Dennis J. Teehan Jr. works

Medicare's Facility Affiliation Data lists Dennis J. Teehan Jr. 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 Dennis J. Teehan Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Preventive Medicine doctors in Massachusetts →

Other preventive medicine doctors in Massachusetts

Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.

All preventive medicine doctors in Massachusetts →

Clinician information

CredentialMD
Medical schoolTufts University School Of Medicine
Graduation year2008 (18 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1306006945
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