Janessa J. Chang, MD

Medicare activity in 2024

Official CMS public-use data for Janessa J. Chang, 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. Injection, onabotulinumtoxina, 1 unit (J0585)13,474 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)327 services
3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)50 services
4. Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle (95874)41 services
5. Injection of chemical for paralysis of nerve muscles on arm or leg, 1-4 muscles, each additional extremity (64643)32 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 cholesterol63%
• Stroke or mini-stroke45%
• Arthritis40%
• Anxiety37%
• Diabetes31%

Hospitals where Janessa J. Chang works

Medicare's Facility Affiliation Data lists Janessa J. Chang 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.

• Multicare Good Samaritan HospitalPuyallup, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500079
• Providence St Peter HospitalOlympia, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500024
• Tacoma General Allenmore HospitalTacoma, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500129

Practice locations

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

• 4700 Point Fosdick DrGig Harbor, WA 98335

Group practices

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

• Multicare Health System2,325 clinicians in the group

Specialties

• Physical Medicine and Rehabilitationprimary

Find other Physical Medicine and Rehabilitation doctors in Washington →

Other rehabilitation doctors in Gig Harbor

Clinicians with the same Medicare primary specialty in Gig Harbor, WA — not a recommendation.

• Steven H. Litsky, MD
• Tanya Harris, MD
• Venus Azimi, DO
• Jeffery T. Berdan, DO
• Michael Watts
• Jenny Smith, MD

All rehabilitation doctors in Gig Harbor →

Other clinicians in Multicare Health System

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

• Amir Hedayati, MD
• Christopher Bradley, PT
• Kiara A. Gries, PT
• Dawood Tafti, MD
• Yu Zhu, MD
• Trevor Lane, 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