Jack Chang, PHARMD
NPI 1821737339 · Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Chicago, IL
Jack Chang, PHARMD is a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist provider in Chicago, IL (NPI 1821737339).
Provider details
- NPI number
- 1821737339
- Entity type
- Individual
- Primary specialty
- Pharmacist Clinician (PhC)/ Clinical Pharmacy SpecialistPharmacy Service Providers
- Credential
- PHARMD
- Sex
- Male
- Sole proprietor
- No
- License
- 051.302632 (IL)
Specialties & taxonomies
Pharmacy Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
- 2022-06-02
- Last updated
- 2022-06-02
- Certified
- 2022-06-02
Frequently asked questions
- What is Jack Chang's NPI number?
- Jack Chang's National Provider Identifier (NPI) is 1821737339, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Chang's specialty?
- Jack Chang is listed in the NPPES registry with a primary specialty of Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist (Pharmacy Service Providers).
- Where is Jack Chang located?
- Jack Chang's practice location on file with NPPES is 251 E Huron St, Chicago, IL 60611-2908.
- What is Jack Chang's phone number?
- The practice phone number listed in the NPPES registry for Jack Chang is (312) 926-3583.
- Is Jack Chang's NPI active?
- Yes — Jack Chang's NPI (1821737339) is active in the NPPES registry as of the last update on 2022-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.