Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. DEREK W TAN MD
NPI 1023694510
Anesthesiology in Seattle, WA

Q: What is Derek Tan's NPI number?

The NPI number for Derek Tan is 1023694510. It was assigned to this individual provider in the NPPES registry on March 23, 2021.

Q: What is Derek Tan's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Q: When was this NPI record last updated?

The NPPES record for Derek Tan was last updated on September 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 23, 2021PECOS Enrolled

1100 9TH AVE, SEATTLE, WA 98101(206) 223-6980(206) 223-6982 Get Directions Write a Review

NPPES record last updated: September 25, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 25, 2026, Jul 30, 2026, Jan 10, 2026 and 1 more (4 updates tracked since 2021).

On this page

About Dr. Derek W Tan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DEREK W TAN MD (NPI 1023694510) is an individual anesthesiology provider in Seattle, Washington, licensed in Washington (MD.MD.70070153) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS and is a graduate of University Of Vermont College Of Medicine (2021).

NPPES Registry Identity

NPI1023694510

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameDR. DEREK W TANCredential: MD

Location Address1100 9TH AVESeattle, WA 98101-2756

Mailing AddressPo Box 741515Los Angeles, CA 90074-1515 · (206) 223-6980 · Fax (206) 223-6982

Phone(206) 223-6980

Fax(206) 223-6982

Sole ProprietorNo

Medical School CMSUniversity Of Vermont College Of MedicineGraduated 2021

Enumeration DateMarch 23, 2021

Last NPPES UpdateSeptember 25, 20264 updates tracked since enumeration

NPPES CertifiedSeptember 25, 2026

✔ NPI 1023694510 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in WA · MD.MD.70070153

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

1100 9TH AVE, Seattle, WA 98101

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Derek W Tan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID446715734

PECOS Enrollment IDI20260717000614

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Derek Tan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Virginia Mason Medical Center

Same address

Gastroenterology

1100 9TH AVE
Seattle, WA 98101

Reassigned Medicare billing, Washington enrollment
1,021 clinicians in this Medicare group

NPI 1003970989 (206) 223-6600

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JACLYN ANN SUBKOVIAK OT

Occupational Therapist

1100 9TH AVE
SEATTLE, WA 98101

King County (206) 341-0461

MARCIE G HUME PHARM.D.

Pharmacist

1100 9TH AVE, MS C3-PO
SEATTLE, WA 98101

King County (206) 223-6877

DR. VINAY GUPTA MD

Internal Medicine (Critical Care Medicine)

1100 9TH AVE
SEATTLE, WA 98101

King County (206) 223-6980

MARY JO BUKOVIC CCP

Contractor

1100 9TH AVE
SEATTLE, WA 98101

King County (206) 223-6600

PEGAH SAFAEIAN D.O.

Physical Medicine & Rehabilitation

1100 9TH AVE
SEATTLE, WA 98101

King County (206) 223-6600

MRS. GENEVIEVE HOUDET-COTE SLP

Speech-Language Pathologist

1100 9TH AVE, MS:H4-PMR
SEATTLE, WA 98101

King County (206) 341-0461

ROBERT DALE MCCLURE MD

Surgery

1100 9TH AVE
SEATTLE, WA 98101

King County (206) 223-6600

VIRGINIA MASON MEDICAL CENTER

Internal Medicine (Gastroenterology)

1100 9TH AVE
SEATTLE, WA 98101

King County (206) 223-6600

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Derek Tan's NPI number?

The NPI number for Derek Tan is 1023694510. It was assigned to this individual provider in the NPPES registry on March 23, 2021.

Where is Derek Tan located?

Derek Tan practices at 1100 9th Ave, Seattle, WA 98101. The listed phone number is (206) 223-6980.

What is Derek Tan's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Derek Tan enrolled in Medicare?

Yes. Derek Tan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Derek Tan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Derek Tan reassigns Medicare benefits to Virginia Mason Medical Center (Seattle, WA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Derek Tan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Derek Tan accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Derek Tan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Derek Tan was last updated on September 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.