Olivia Chang, PA-C
NPI 1649844085 · Physician Assistant · Newport Beach, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Olivia Chang, PA-C is a Physician Assistant provider in Newport Beach, CA (NPI 1649844085).
Provider details
- NPI number
- 1649844085
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- PA63012 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
5 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
426 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 175 | $118 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 76 | $84 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 63 | $13 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 41 | $15 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 36 | $118 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 243 | 98 |
| Atorvastatin Calcium | 155 | 69 |
| Metoprolol Succinate | 147 | 54 |
| Amlodipine Besylate | 128 | 52 |
| Losartan Potassium | 121 | 52 |
| Furosemide | 117 | 41 |
| Carvedilol | 111 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,282 across 77 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
- 2021-05-19
- Last updated
- 2026-05-21
- Certified
- 2026-05-21
Frequently asked questions
- What is Olivia Chang's NPI number?
- Olivia Chang's National Provider Identifier (NPI) is 1649844085, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Olivia Chang's specialty?
- Olivia Chang is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Olivia Chang located?
- Olivia Chang's practice location on file with NPPES is 401 Old Newport Blvd Ste 201, Newport Beach, CA 92663-4289.
- What is Olivia Chang's phone number?
- The practice phone number listed in the NPPES registry for Olivia Chang is (949) 478-7373.
- Does Olivia Chang accept Medicare?
- Olivia Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Olivia Chang's NPI active?
- Yes — Olivia Chang's NPI (1649844085) is active in the NPPES registry as of the last update on 2026-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.