RITCHIE ALLEN LARSON M.D.
NPI 1235280462
Anesthesiology in Seattle, WA

Q: What is Ritchie Larson's NPI number?

The NPI number for Ritchie Larson is 1235280462. It was assigned to this individual provider in the NPPES registry on January 15, 2007.

Q: What is Ritchie Larson'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 Ritchie Larson was last updated on April 14, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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 January 15, 2007PECOS EnrolledAccepts Medicare Assignment

91.13/100

CMS Quality Rating

1229 MADISON ST, SUITE 1440, SEATTLE, WA 98104(206) 625-0578(206) 625-9184 Get Directions Write a Review

NPPES record last updated: April 14, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Ritchie Allen Larson M.d. NPPES

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

RITCHIE ALLEN LARSON M.D. (NPI 1235280462) is an individual anesthesiology provider in Seattle, Washington, licensed in Washington (MD00032132) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Swedish Medical Center, and is a graduate of University Of Chicago, Pritzker School Of Medicine (1992).

NPPES Registry Identity

NPI1235280462

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameRITCHIE ALLEN LARSONCredential: M.D.

Location Address1229 MADISON ST, SUITE 1440Seattle, WA 98104-3586

Mailing Address1229 Madison St, Suite 1440Seattle, WA 98104-3586 · (206) 625-0578 · Fax (206) 625-9184

Phone(206) 625-0578

Fax(206) 625-9184

Sole ProprietorNo

Medical School CMSUniversity Of Chicago, Pritzker School Of MedicineGraduated 1992

Enumeration DateJanuary 15, 2007

Last NPPES UpdateApril 14, 2008

✔ NPI 1235280462 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in WA · MD00032132

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.

1229 MADISON ST, Seattle, WA 98104

Open in Google Maps ↗

Other Identifiers 3

Medicare UPING48530

Medicare PINGAB10950

Medicaid8241085WA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ritchie Allen Larson M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2567354061

PECOS Enrollment IDI20101124001112

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.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Insertion of artery tube for blood sampling or infusion through skin 36620

This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.

12 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Swedish Medical Center

Acute Care Hospitals · Seattle, WA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500027

Location747 BroadwaySeattle, WA 98122 · King County

Emergency services Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.13/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

94.94

Improvement Activities

Cost

79.7

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.

SWEDISH HEALTH SERVICE

Pediatrics (Neonatal-Perinatal Medicine)

1229 MADISON ST, STE 750
SEATTLE, WA 98104

King County (206) 386-2101

JONATHAN S MARON M.D.

Anesthesiology

1229 MADISON ST, SUITE 1440
SEATTLE, WA 98104

King County (206) 625-0578

ANDREW H CHUNG M.D.

Anesthesiology

1229 MADISON ST, SUITE 1440
SEATTLE, WA 98104

King County (206) 625-0578

DENISE Y LIM M.D.

Anesthesiology

1229 MADISON ST, SUITE 1440
SEATTLE, WA 98104

King County (206) 625-0578

ROBIN E COLE MD

Obstetrics & Gynecology

1229 MADISON ST, STE 1500
SEATTLE, WA 98104

King County (206) 386-9500

SKIN SURGERY CENTER PS

Clinic/Center (Ambulatory Surgical)

1229 MADISON ST, SUITE 1480
SEATTLE, WA 98104

King County (206) 346-6647

MARK E GIBSON M.D.

Anesthesiology

1229 MADISON ST, SUITE 1440
SEATTLE, WA 98104

King County (206) 625-0578

JENNIFER L MUSHEN RN

Registered Nurse (Medical-Surgical)

1229 MADISON ST, SUITE 1600
SEATTLE, WA 98104

King County (206) 386-2600

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 Ritchie Larson's NPI number?

The NPI number for Ritchie Larson is 1235280462. It was assigned to this individual provider in the NPPES registry on January 15, 2007.

Where is Ritchie Larson located?

Ritchie Larson practices at 1229 Madison St Suite 1440, Seattle, WA 98104. The listed phone number is (206) 625-0578.

What is Ritchie Larson's specialty?

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

Is Ritchie Larson enrolled in Medicare?

Yes. Ritchie Larson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Ritchie Larson affiliated with any hospitals?

According to CMS data, Ritchie Larson is affiliated with Swedish Medical Center.

When was this NPI record last updated?

The NPPES record for Ritchie Larson was last updated on April 14, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.