Megan J. Barker, MD

Medicare activity in 2024

Official CMS public-use data for Megan J. Barker, 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.

Most frequent services

1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)41 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)30 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)19 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)19 services
5. Hospital discharge day management, more than 30 minutes (99239)13 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 pressure72%
• High cholesterol62%
• Arthritis49%
• Depression41%
• Ischemic heart disease39%
• Chronic kidney disease38%

Hospitals where Megan J. Barker works

Medicare's Facility Affiliation Data lists Megan J. Barker 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.

• Maine General Medical CenterAugusta, ME · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 200039

Practice locations

Addresses where Megan J. Barker is enrolled with Medicare (CMS data updated October 2, 2026).

• 149 N StWaterville, ME 04901 (207) 872‑1000
• 35 Medical Ctr PkwyAugusta, ME 04330 (207) 621‑1000

Group practices

Medicare enrollment lists Megan J. Barker as a member of this group (CMS data updated October 2, 2026).

• Mainegeneral Medical Center555 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Maine →

Other family doctors in Waterville

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

• James A. Schneid, MD
• Cheryl K. Seymour, MD
• Michael Clark, MD
• Barbara A. Moss, DO
• Minyoung J. Park, DO
• Lisa K. Keiski, DO
• Josephine A. Conte, DO
• Henry F. Colt, MD

All family doctors in Waterville →

Other clinicians in Mainegeneral Medical Center

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

• Joseph Charpentier, DO
• Elaine Balutis, MD
• Lyra L. Collard, NP
• Danielle Webster, CSW
• Kelley J. Harmon, DO
• Walter Geer, DO

Clinician information

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