Karen Nishimura, MD
NPI 1730284878 · Dermatology Physician · Roseville, CA
Karen Nishimura, MD is a Dermatology Physician provider in Roseville, CA (NPI 1730284878).
Provider details
- NPI number
- 1730284878
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A60747 (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
2,996 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 | 1,321 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 365 | $96 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 295 | $136 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 268 | $56 |
| Biopsy of Related Skin Growth, First Growth11102 | 245 | $99 |
| Biopsy of Related Skin Growth, Each Additional Growth |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 156 | 104 |
| Fluorouracil | 73 | 68 |
| Mupirocin | 65 | 56 |
| Hydrocortisone | 62 | 47 |
| Fluocinonide | 49 | 23 |
| Metronidazole | 44 | 21 |
| Minoxidil | 42 | — |
| Clobetasol Propionate | 39 | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$43 across 1 record (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
- 2006-09-13
- Last updated
- 2015-06-08
Frequently asked questions
- What is Karen Nishimura's NPI number?
- Karen Nishimura's National Provider Identifier (NPI) is 1730284878, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Nishimura's specialty?
- Karen Nishimura is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Nishimura located?
- Karen Nishimura's practice location on file with NPPES is 3 Medical Plaza Dr, Roseville, CA 95661-3087.
- What is Karen Nishimura's phone number?
- The practice phone number listed in the NPPES registry for Karen Nishimura is (916) 797-4766.
- Is Karen Nishimura's NPI active?
- Yes — Karen Nishimura's NPI (1730284878) is active in the NPPES registry as of the last update on 2015-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.