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Family Practice

Samuel L. Zager, MD

Works at hospitals in Portland, ME · Maine

Summary

Dr. Samuel L. Zager, MD is a family doctor at 114 Bath Rd, Brunswick, ME 04011. Phone: (207) 798-4400. Accepts Medicare assignment. In 2024, Samuel L. Zager had 99 Original Medicare patients and 704 services. NPI 1821383860. 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 Samuel L. Zager, 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 Samuel L. Zager accept Medicare assignment?
Yes. Medicare's clinician data says Samuel L. Zager 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 Samuel L. Zager see?
In 2024, CMS data shows 99 Original Medicare patients and 704 services for Samuel L. Zager. This counts Original Medicare only and measures volume, not quality.
What is Samuel L. Zager's NPI number?
1821383860. 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 Samuel L. Zager, 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 Medicare704
Different services or procedures69
Participating Medicare providerYes
Average age of these patients69

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)116 services
  2. Insertion of needle into vein for collection of blood sample (36415)81 services
  3. Blood test, comprehensive group of blood chemicals (80053)63 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)52 services
  5. Blood test, lipids (cholesterol and triglycerides) (80061)45 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 cholesterol68%
  • High blood pressure57%
  • Arthritis35%
  • Anxiety35%
  • Diabetes23%
  • Depression19%

Hospitals where Samuel L. Zager works

Medicare's Facility Affiliation Data lists Samuel L. Zager 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 Samuel L. Zager is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Martin's Point Health Care, Inc.89 clinicians in the group

Specialties

Find other Family Practice doctors in Maine →

Other family doctors in Brunswick

Clinicians with the same Medicare primary specialty in Brunswick, ME — not a recommendation.

All family doctors in Brunswick →

Other clinicians in Martin's Point Health Care, Inc.

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

Clinician information

CredentialMD
Medical schoolHarvard Medical School
Graduation year2011 (15 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1821383860
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