Grace Sun, M.D.
NPI 1396056735 · Dermatology Physician · Oxnard, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Sun, M.D. is a Dermatology Physician provider in Oxnard, CA (NPI 1396056735).
Provider details
- NPI number
- 1396056735
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A124906 (CA)
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
15 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
1,993 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 | 1,040 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 459 | $97 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 235 | $67 |
| Biopsy of Related Skin Growth, First Growth11102 | 70 | $108 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 57 | $136 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 128 | 72 |
| Clobetasol Propionate | 110 | 52 |
| Ketoconazole | 86 | 52 |
| Hydrocortisone | 56 | 30 |
| Fluocinonide | 48 | 31 |
| Fluorouracil | 43 | 39 |
| Minoxidil | 42 | — |
| Clindamycin Phosphate | 35 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,549 across 60 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
- 2010-06-30
- Last updated
- 2015-04-23
Frequently asked questions
- What is Grace Sun's NPI number?
- Grace Sun's National Provider Identifier (NPI) is 1396056735, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Sun's specialty?
- Grace Sun is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Grace Sun located?
- Grace Sun's practice location on file with NPPES is 2811 N Ventura Rd, Oxnard, CA 93036-2213.
- What is Grace Sun's phone number?
- The practice phone number listed in the NPPES registry for Grace Sun is (805) 983-0343.
- Does Grace Sun accept Medicare?
- Grace Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Sun's NPI active?
- Yes — Grace Sun's NPI (1396056735) is active in the NPPES registry as of the last update on 2015-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.