Charles J. Hammer Iii, MD

Medicare activity in 2024

Official CMS public-use data for Charles J. Hammer Iii, 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. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)1,188 services
2. Destruction of precancer skin growth, 2-14 growths (17003)1,025 services
3. Destruction of precancer skin growth, 1 growth (17000)373 services
4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)114 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)107 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 pressure61%
• High cholesterol57%
• Arthritis42%
• Diabetes18%
• Ischemic heart disease15%
• Anxiety15%

Hospitals where Charles J. Hammer Iii works

Medicare's Facility Affiliation Data lists Charles J. Hammer Iii 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.

• Androscoggin Valley HospitalBerlin, NH · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 301310
• Littleton Regional HealthcareLittleton, NH · Critical Access Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 301302
• Mary Hitchcock Memorial HospitalLebanon, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300003
• North Country Hospital and Health CenterNewport, VT · Critical Access Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 471304
• Northeastern Vermont Regional HospitalSaint Johnsbury, VT · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 471303

Practice locations

Addresses where Charles J. Hammer Iii is enrolled with Medicare (CMS data updated October 2, 2026).

• 1 Medical Ctr DrLebanon, NH 03756 (603) 650‑5000
• PO Box, Suite 810Hanover, NH 03755

Group practices

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

• Dartmouth-Hitchcock Clinic1,472 clinicians in the group

Specialties

• Dermatologyprimary

Find other Dermatology doctors in New Hampshire →

Other dermatologists in Lebanon

Clinicians with the same Medicare primary specialty in Lebanon, NH — not a recommendation.

• Abdulaziz A. Alomran
• Dorothea T. Barton, MD
• Matthew J. Davis, MD
• Carsten R. Hamann, MD
• Roberta M. Lucas, MD
• David F. Horne, MD
• Julianne A. Mann, MD
• Brian J. Simmons, MD

All dermatologists in Lebanon →

Other clinicians in Dartmouth-Hitchcock Clinic

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

• Beata A. Bajgierowicz, MD
• Jasmine Y. Gale, MD
• Jennifer Tonneson, MD
• David B. Min, MD
• Mark Garret, MD
• Kerrington D. Smith, MD

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