Nathan R. Elwood, MD

Medicare activity in 2024

Official CMS public-use data for Nathan R. Elwood, 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)24 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)24 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)20 services
4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)13 services
5. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)11 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 pressure68%
• High cholesterol67%
• Arthritis46%
• Chronic kidney disease25%
• Depression24%
• Atrial fibrillation24%

Hospitals where Nathan R. Elwood works

Medicare's Facility Affiliation Data lists Nathan R. Elwood 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.

• LincolnhealthDamariscotta, ME · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 201302
• MaineHealth Pen Bay HospitalRockport, ME · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 200063

Practice locations

Addresses where Nathan R. Elwood is enrolled with Medicare (CMS data updated October 2, 2026).

• 22 Bramhall StPortland, ME 04102
• 4 Glen Cove DrRockport, ME 04856
• 6 Glen Cove DrRockport, ME 04856

Group practices

Medicare enrollment lists Nathan R. Elwood as a member of this group (CMS data updated October 2, 2026).

• MaineHealth2,633 clinicians in the group

Specialties

• General Surgeryprimary

Find other General Surgery doctors in Maine →

Other general surgeons in Portland

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

• Joseph D. Mack, MD
• Aaron B. Kirby, MD
• Anna G. Meader, MD
• Tovah Z. Moss, MD
• Forest Sheppard, MD
• Samira M. Hasan, DO
• Randolph H. Helmholz, MD
• Elizabeth Turner, MD

All general surgeons in Portland →

Other clinicians in MaineHealth

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

• Taylor L. Chase
• Emily V. Wood, MD
• Shayan Zaheer, MD
• Angela A. Umbro-Hussey, NP
• Tyler McKinnish, MD
• Peri Akchurin, 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