Irene Chang, D.D.S.
NPI 1326273343 · Endodontics · Arcadia, CA
Enrolled with Medicare as Order and Referring Only - Other (physician) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irene Chang, D.D.S. is a Endodontics provider in Arcadia, CA (NPI 1326273343).
Provider details
- NPI number
- 1326273343
- Entity type
- Individual
- Primary specialty
- EndodonticsDental Providers
- Credential
- D.D.S.
- Sex
- Female
- Sole proprietor
- No
- License
- 38815 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 47 | 39 |
| Clindamycin Hcl | 16 | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-05-19
- Last updated
- 2024-02-24
- Certified
- 2024-02-24
Frequently asked questions
- What is Irene Chang's NPI number?
- Irene Chang's National Provider Identifier (NPI) is 1326273343, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irene Chang's specialty?
- Irene Chang is listed in the NPPES registry with a primary specialty of Endodontics (Dental Providers).
- Where is Irene Chang located?
- Irene Chang's practice location on file with NPPES is 40 E Huntington Dr, Arcadia, CA 91006-3209.
- What is Irene Chang's phone number?
- The practice phone number listed in the NPPES registry for Irene Chang is (626) 577-0114.
- Does Irene Chang accept Medicare?
- Irene Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irene Chang's NPI active?
- Yes — Irene Chang's NPI (1326273343) is active in the NPPES registry as of the last update on 2024-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.