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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

Active since March 23, 2021PECOS Enrolled
1100 9TH AVE, SEATTLE, WA 98101(510) 648-0235 Get Directions Write a Review

NPPES record last updated: July 30, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 30, 2026, Jan 10, 2026, Mar 23, 2021 (3 updates tracked since 2021).

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 Address1100 9th AveSeattle, WA 98101-2756
Phone(510) 648-0235
Sole ProprietorNo
Medical School CMSUniversity Of Vermont College Of MedicineGraduated 2021
Enumeration DateMarch 23, 2021
Last NPPES UpdateJuly 30, 20263 updates tracked since enumeration
NPPES CertifiedJuly 30, 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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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

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 (510) 648-0235.

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.

When was this NPI record last updated?

The NPPES record for Derek Tan was last updated on July 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.