Chia-Wai Chang, MD
NPI 1013975986 · Otolaryngology Physician · Columbia, MO
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chia-Wai Chang, MD is a Otolaryngology Physician provider in Columbia, MO (NPI 1013975986).
Provider details
- NPI number
- 1013975986
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2005023723 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,935 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 790 | $3 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 550 | $13 |
| Professional Service for Multiple Injections of Allergen95117 | 184 | $11 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 70 | $63 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 68 | $132 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 66 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 99 | 28 |
| Ipratropium Bromide | 38 | 13 |
| Immun Glob G(igg)/Pro/Iga 0-50brand: Hizentra | 37 | — |
| Doxycycline Hyclate | 23 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 14 | 11 |
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$258 across 9 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
Registry dates
- Enumerated
- 2006-05-02
- Last updated
- 2022-10-05
Frequently asked questions
- What is Chia-Wai Chang's NPI number?
- Chia-Wai Chang's National Provider Identifier (NPI) is 1013975986, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chia-Wai Chang's specialty?
- Chia-Wai Chang is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Chia-Wai Chang located?
- Chia-Wai Chang's practice location on file with NPPES is 812 N Keene St, Columbia, MO 65201-6633.
- What is Chia-Wai Chang's phone number?
- The practice phone number listed in the NPPES registry for Chia-Wai Chang is (573) 817-3000.
- Does Chia-Wai Chang accept Medicare?
- Chia-Wai Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chia-Wai Chang's NPI active?
- Yes — Chia-Wai Chang's NPI (1013975986) is active in the NPPES registry as of the last update on 2022-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.