Chelsea M. Macnamara, PA

Medicare activity in 2024

Official CMS public-use data for Chelsea M. Macnamara, 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 moderate level of decision making, if using time, 30 minutes or more (99214)150 services
2. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)30 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)20 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 pressure75%
• High cholesterol75%
• Arthritis59%
• Anxiety45%
• Depression25%
• Diabetes19%

Hospitals where Chelsea M. Macnamara works

Medicare's Facility Affiliation Data lists Chelsea M. Macnamara 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.

• UPMC WilliamsportWilliamsport, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390045

Practice locations

Addresses where Chelsea M. Macnamara is enrolled with Medicare (CMS data updated October 2, 2026).

• 1 Outlet Ln, Suite 400Lock Haven, PA 17745 (570) 769‑1300
• 2000 Westinghouse Dr, Suite 200Cranberry Twp, PA 16066
• 610 High StLock Haven, PA 17745 (570) 748‑1260
• 700 High StWilliamsport, PA 17701

Group practices

Medicare enrollment lists Chelsea M. Macnamara as a member of these groups (CMS data updated October 2, 2026).

• Phoenix Rehabilitation and Health Services Inc2,800 clinicians in the group
• Susquehanna Physician Services612 clinicians in the group

Specialties

• Physician Assistantprimary

Find other clinicians: Physician Assistant, Pennsylvania →

Other physician assistants in Lock Haven

Clinicians with the same Medicare primary specialty in Lock Haven, PA — not a recommendation.

• John V. Hanna, PA
• Hailey M. Schwartzmier, PA
• Karinne E. Santonico, PA
• Megan A. Sechrist, PA

All physician assistants in Lock Haven →

Other clinicians in Phoenix Rehabilitation and Health Services Inc

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

• Amy Patel, PA
• York C. Yang, MD
• Matthew McLean, MD
• Sophia Smithbauer, DO
• Tracy N. Clouser, NP
• David G. Nazarian, 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