Chang Medical, a Professional Corporation
NPI 1609441070 · Pulmonary Disease Physician · Monterey Park, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chang Medical, a Professional Corporation is a Pulmonary Disease Physician organization in Monterey Park, CA (NPI 1609441070).
Provider details
- NPI number
- 1609441070
- Entity type
- Organization
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- William Chang, Owner(626) 280-4393
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-05-26
- Last updated
- 2021-05-26
- Certified
- 2021-05-26
Frequently asked questions
- What is Chang Medical, a Professional Corporation's NPI number?
- Chang Medical, a Professional Corporation's National Provider Identifier (NPI) is 1609441070, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Chang Medical, a Professional Corporation?
- Chang Medical, a Professional Corporation is classified in the NPPES registry as Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Chang Medical, a Professional Corporation located?
- Chang Medical, a Professional Corporation's practice location on file with NPPES is 500 N Garfield Ave Ste 204, Monterey Park, CA 91754-1242.
- What is Chang Medical, a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Chang Medical, a Professional Corporation is (626) 280-4393.
- Does Chang Medical, a Professional Corporation accept Medicare?
- Chang Medical, a Professional Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Chang Medical, a Professional Corporation?
- The authorized official listed on Chang Medical, a Professional Corporation's NPPES record is William Chang, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Chang Medical, a Professional Corporation's NPI active?
- Yes — Chang Medical, a Professional Corporation's NPI (1609441070) is active in the NPPES registry as of the last update on 2021-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.