Joannie Sun, MD
NPI 1881780229 · Dermatology Physician · Newport Beach, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joannie Sun, MD is a Dermatology Physician provider in Newport Beach, CA (NPI 1881780229).
Provider details
- NPI number
- 1881780229
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A72709 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
5,428 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,493 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,163 | $99 |
| Destruction of Skin Growth, 1-14 Growths17110 | 611 | $126 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 504 | $27 |
| Destruction of Precancer Skin Growth, 15 Or More Growths17004 | 410 | $188 |
| Destruction of Precancer Skin Growth, 1 Growth17000 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Minoxidil | 91 | 21 |
| Betamethasone/Propylene Glycbrand: Betamethasone Diprop Augmented | 58 | 48 |
| Fluorouracil | 55 | 45 |
| Clobetasol Propionate | 49 | 25 |
| Ketoconazole | 39 | 24 |
| Triamcinolone Acetonide | 31 | 24 |
| Nystatin | 29 | 15 |
| Dupilumab |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$481 across 26 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
- 2006-10-05
- Last updated
- 2011-09-16
Frequently asked questions
- What is Joannie Sun's NPI number?
- Joannie Sun's National Provider Identifier (NPI) is 1881780229, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joannie Sun's specialty?
- Joannie Sun is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Joannie Sun located?
- Joannie Sun's practice location on file with NPPES is 230 Newport Center Dr, Newport Beach, CA 92660-7509.
- What is Joannie Sun's phone number?
- The practice phone number listed in the NPPES registry for Joannie Sun is (949) 706-7766.
- Does Joannie Sun accept Medicare?
- Joannie Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joannie Sun's NPI active?
- Yes — Joannie Sun's NPI (1881780229) is active in the NPPES registry as of the last update on 2011-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.