Dr. Mark Conrad Valentine, M.D.

Dr. Mark Conrad Valentine is a Dermatology Physician provider (Dermatology) practicing in Everett, WA, registered in the NPPES registry with NPI 1043294473 since 2005. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1043294473
Entity type	Individual (Type 1)
Name	Dr. Mark Conrad Valentine
Credential	M.D.
Sex	Male
Practice address	Everett, WA, 98201
Phone	4252586767
Fax	4252596260
Enumeration date	2005-11-30
Last updated in NPPES	2007-11-02

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207N00000X	Dermatology Physician	Primary	MD00017167	WA

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1489608	Medicaid	WA	—

Copy-ready billing details

Provider: Mark Valentine, M.D.
NPI: 1043294473
Taxonomy: 207N00000X (Dermatology Physician)
Address: Everett, WA, 98201

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1649454026	Michael L. Tjoelker, M.D.	Organization	Dermatology Physician	Everett, WA
1578015145	Edin Denison	Individual	Clinical Social Worker	Everett, WA
1700666948	Meadows Agency LLC Edin Dail Denison Mbr	Organization	Clinical Social Worker	Everett, WA

Verify this record

Cross-check NPI 1043294473 against the authoritative CMS record: view Dr. Mark Conrad Valentine on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mark Valentine?

Mark Valentine is registered in NPPES with the primary taxonomy of Dermatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-11-02.