Karen Y. Nishimura, MD
Dermatology Physician · Roseville, CA
Karen Y. Nishimura, MD is a dermatology physician with a practice address in Roseville, California, and NPI 1730284878, issued on Sep 13, 2006. Check the license (California A60747, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Y. Nishimura
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A60747 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3 Medical Plaza Dr, Roseville, CA 95661
- Phone
- (916) 797-4766
- Enumerated
- Sep 13, 2006
- Record last updated
- Jun 8, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (916) 797-4767
- Medicaid ID
- 00A607470 CA
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 3 Medical Plaza Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kim David Canlas, M.D.Internal Medicine Physician1982920401
- April Cauthen, NPNurse Practitioner1225185622
Verify Karen Y. Nishimura in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A60747Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average dermatology physician in 2024
1,033 Medicare Part D claims for 396 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Triamcinolone Acetonide156 claims
- Fluorouracil73 claims
- Mupirocin65 claims
- Hydrocortisone62 claims
- Fluocinonide49 claims
- Metronidazole44 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $42.67
1 payment: food and beverage; the largest payer was Galderma Laboratories, L.P. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Karen Y. Nishimura among 2,083 dermatology physician records in California
Karen Y. Nishimura, MD is one of 2,083 dermatology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 56% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2015 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in California
There are 2,083 dermatology physician records in California.
All 2,083 in California → Every provider in Roseville → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Stephen Borchers, MDRoseville, CA 956611992883672
- Christine Doherty, M.D.Roseville, CA 956611073776613
- Sean Doherty, M.D.Roseville, CA 956611578726121
- Scott Hearth, M.D.Roseville, CA 956611548366727
- Artur Henke, MDRoseville, CA 956611932287653
- Emily Jong, MDRoseville, CA 956611881772531
- Linda Lee, M.D. PH.D. M.P.H.Roseville, CA 956611912999558
- Sylvia Ortega, P.A.Roseville, CA 956611215124946
Common questions
What is Karen Y. Nishimura, MD's NPI number?
Karen Y. Nishimura, MD's National Provider Identifier (NPI) is 1730284878, issued on Sep 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Y. Nishimura, MD located?
The NPPES record lists a practice address at 3 Medical Plaza Dr, Roseville, CA, 95661. Phone: (916) 797-4766. Providers update this record themselves, so call before visiting.
How can I verify Karen Y. Nishimura, MD's license?
NPPES lists California license number A60747, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen Y. Nishimura, MD prescribe under Medicare Part D?
In 2024, Karen Y. Nishimura, MD had 1,033 Medicare Part D claims for 396 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.