William G. Parkinson, MD

Medicare activity in 2024

Official CMS public-use data for William G. Parkinson, 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. Ct scan head or brain without contrast (70450)757 services
2. Mri scan of brain before and after contrast (70553)264 services
3. Ct scan of upper spine without contrast (72125)239 services
4. Ct scan of blood vessels of head with contrast (70496)225 services
5. Ct scan of blood vessels of neck with contrast (70498)206 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 pressure71%
• High cholesterol64%
• Arthritis54%
• Anxiety35%
• Depression33%
• Diabetes28%

Hospitals where William G. Parkinson works

Medicare's Facility Affiliation Data lists William G. Parkinson 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 Maine Medical CenterPortland, ME · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 200009
• MaineHealth Pen Bay HospitalRockport, ME · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 200063
• St Mary's Regional Medical CenterLewiston, ME · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 200034
• The Memorial HospitalNorth Conway, NH · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 301307

Practice locations

Addresses where William G. Parkinson is enrolled with Medicare (CMS data updated October 2, 2026).

• 22 Bramhall StPortland, ME 04102 (207) 871‑2571
• 3073 White Mountain HwyNorth Conway, NH 03860 (603) 356‑5461
• 33 Sewall StPortland, ME 04102 (207) 828‑2160
• 600 Turner St, Suite 1Auburn, ME 04210 (207) 601‑3333

Group practices

Medicare enrollment lists William G. Parkinson as a member of this group (CMS data updated October 2, 2026).

• Spectrum Healthcare Partners PA308 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Maine →

Other radiologists in Portland

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

• Robert J. McCusker, DO
• Sarah A. Ebert, MD
• Michael D. Digianvittorio, DO
• Corey A. Couto, MD
• Elena L. Resnick, MD
• Brian W. Hayes, MD
• Steven W. Farraher, MD
• Jeremy M. Moretz, MD

All radiologists in Portland →

Other clinicians in Spectrum Healthcare Partners PA

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

• Meredith Peck, MD
• Arielle D. Butterly, MD
• Keating W. Pepper, DO
• Christopher M. Mutter, DO
• Sarah A. Ebert, MD
• Aurora N. Quaye, 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