Sonja M. Krejci, MD
Dermatology Physician · Seattle, WA
Sonja M. Krejci, MD is a dermatology physician with a practice address in Seattle, Washington, and NPI 1588766620, issued on Sep 1, 2006. Check the license (Washington MD00033243, as entered in NPPES) on the Washington Medical Commission; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Sonja M. Krejci
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- MD00033243 WA
Self-reported in NPPES; status is on the state search - Practice location
- 4740 44TH Ave SW, Seattle, WA 98116
- Phone
- (206) 937-8954
- Enumerated
- Sep 1, 2006
- Record last updated
- Mar 30, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (206) 937-1916
- Medicaid ID
- 8465429 WA
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 384 in Washington → Look up another NPI →
Also registered at 4740 44TH Ave SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelli Arntzen, MDDermatology Physician1477630051
- Amy Nelson, PA-CMedical Physician Assistant1265480818
Verify Sonja M. Krejci in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00033243Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Sonja M. Krejci among 384 dermatology physician records in Washington
Sonja M. Krejci, MD is one of 384 dermatology physician records with a practice address in Washington. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 55% newer
- In a Medicare fileNo · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2017 · 56% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in Washington
There are 384 dermatology physician records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 384 in Washington → Every provider in Seattle → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Kelli Arntzen, MDSeattle, WA 981161477630051
- Roy Colven, M.D.Seattle, WA 981151497884506
- Eric SorensenSeattle, WA 981151760844757
- John Streidl, MDSeattle, WA 981151912931635
- Carmen Berger, MDSeattle, WA 981121588749691
- Cynthia ChanSeattle, WA 981121225615958
- Michelle Heath, MDSeattle, WA 981121962501981
- Sylvia Johnson, M.D.Seattle, WA 981121790839413
Common questions
What is Sonja M. Krejci, MD's NPI number?
Sonja M. Krejci, MD's National Provider Identifier (NPI) is 1588766620, issued on Sep 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sonja M. Krejci, MD located?
The NPPES record lists a practice address at 4740 44TH Ave SW, Seattle, WA, 98116. Phone: (206) 937-8954. Providers update this record themselves, so call before visiting.
How can I verify Sonja M. Krejci, MD's license?
NPPES lists Washington license number MD00033243, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.