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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. HERBERT KLOSS MD
NPI 1407846504
Anesthesiology in Mercer Island, WA

Active since October 28, 2005
5057 84TH AVE SE, MERCER ISLAND, WA 98040(206) 244-1212(206) 244-1223 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Herbert Kloss Md NPPES

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

DR. HERBERT KLOSS MD (NPI 1407846504) is an individual anesthesiology provider in Mercer Island, Washington, licensed in Washington (MD00017372) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1407846504
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. HERBERT KLOSSCredential: MD
Location Address5057 84TH AVE SEMercer Island, WA 98040-4617
Mailing AddressPo Box 5908Bellevue, WA 98006-0408 · (206) 244-1212 · Fax (206) 244-1223
Phone(206) 244-1212
Fax(206) 244-1223
Sole ProprietorNo
Enumeration DateOctober 28, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1407846504 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in WA · MD00017372
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.
5057 84TH AVE SE, Mercer Island, WA 98040
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Other Identifiers 4

Other0139716WA · Dept Of Labor & Industrie
OtherP00113699WA · Railroad Medicare
Medicaid1055268WA
Other9638KLWA · Regence Blue Shield

Other Providers at the Same Location NPPES

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

HERBERT KLOSS, M.D. PLLC
Anesthesiology (Pediatric Anesthesiology)
5057 84TH AVE SE
MERCER ISLAND, WA 98040
King County (253) 375-6937

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 Herbert Kloss's NPI number?

The NPI number for Herbert Kloss is 1407846504. It was assigned to this individual provider in the NPPES registry on October 28, 2005.

Where is Herbert Kloss located?

Herbert Kloss practices at 5057 84th Ave SE, Mercer Island, WA 98040. The listed phone number is (206) 244-1212.

What is Herbert Kloss's specialty?

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

When was this NPI record last updated?

The NPPES record for Herbert Kloss was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.