William Chang, DO
NPI 1770112609 · Pain Medicine (Anesthesiology) Physician · Iowa City, IA
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Chang, DO is a Pain Medicine (Anesthesiology) Physician provider in Iowa City, IA (NPI 1770112609).
Provider details
- NPI number
- 1770112609
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 125.078730 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
4 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,416 across 25 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 501 Redmond Rd NwRome, GA 30165-1415Phone: (706) 802-3063
- 26w171 Roosevelt RdWheaton, IL 60187-6002Phone: (630) 909-7290
- 719 Pioneer Woods DrIndianapolis, IN 46224-6165
Registry dates
- Enumerated
- 2020-04-02
- Last updated
- 2024-03-27
- Certified
- 2024-03-27
Frequently asked questions
- What is William Chang's NPI number?
- William Chang's National Provider Identifier (NPI) is 1770112609, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Chang's specialty?
- William Chang is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is William Chang located?
- William Chang's practice location on file with NPPES is 200 Hawkins Dr, Iowa City, IA 52242-1009.
- What is William Chang's phone number?
- The practice phone number listed in the NPPES registry for William Chang is (319) 356-4076.
- Does William Chang accept Medicare?
- William Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Chang's NPI active?
- Yes — William Chang's NPI (1770112609) is active in the NPPES registry as of the last update on 2024-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.