STEVEN A HAYASHI MD
NPI 1285744318
Internal Medicine in Seattle, WA

Active since August 30, 2006PECOS EnrolledAccepts Medicare Assignment
1100 9TH AVE, SEATTLE, WA 98101(206) 223-6600 Get Directions Write a Review

NPPES record last updated: June 16, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Steven A Hayashi Md NPPES

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

STEVEN A HAYASHI MD (NPI 1285744318) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD00033104) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Virginia Mason Medical Center, and is a graduate of New York University School Of Medicine (1983).

NPPES Registry Identity

NPI1285744318
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameSTEVEN A HAYASHICredential: MD
Location Address1100 9TH AVESeattle, WA 98101-2756
Mailing Address1100 9th Ave, Ms M4-paSeattle, WA 98101-2756 · (206) 583-6025 · Fax (206) 515-5886
Sole ProprietorNo
Medical School CMSNew York University School Of MedicineGraduated 1983
Enumeration DateAugust 30, 2006
Last NPPES UpdateJune 16, 2008
NPI 1285744318 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in WA · MD00033104
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1100 9TH AVE, Seattle, WA 98101

Other Identifiers 9

Other0039581WA · Labor & Industry
OtherHA2662WA · Blue Shield
Medicare PIN8801393WA
Medicare PIN217112705WA
Medicare PIN8801343WA
OtherUS0899817WA · Aetna/ushc Pcp
Other110113411Railroad Medicare
Medicare UPING14601
Medicaid8181463WA

Accepted Insurance

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

Steven A Hayashi Md 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 ID9032103759
PECOS Enrollment IDI20040414000324
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 10

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
308 services232 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
215 services215 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
83 services75 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
44 services34 patients
Online digital evaluation and management service for an established patient for up to 7 days, total time 5-10 minutes 99421
This service involves a week-long digital assessment of your health status. It's conducted online by your healthcare provider, focusing on managing your existing health condition. The process takes 5-10 minutes of your time daily, ensuring optimal health management.
44 services38 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
40 services35 patients

Hospital Affiliations CMS Care Compare

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

Virginia Mason Medical Center

Acute Care Hospitals · Seattle, WA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500005
Location925 Seneca StSeattle, WA 98101 · King County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98101 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$143.76 typical visit price
range $63.67 – $189.37
Typical copayment $35.94 (range $15.91 – $47.34)
Most-billed visit code 99204
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 6

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
23 suppliers44 claims135 services$5.66 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
13 suppliers22 claims31 services$1.05 avg. paid by Medicare
Wheelchair accessory, headrest, cushioned, any type, including fixed mounting hardware, each E0955
DME-Wheelchairs · category DD021N
2 suppliers21 claims21 services$13.84 avg. paid by Medicare
Wheelchair accessory, manual swingaway, retractable or removable mounting hardware for joystick, other control interface or positioning accessory E1028
DME-Wheelchairs · category DD021N
2 suppliers21 claims21 services$14.14 avg. paid by Medicare
Manual adult size wheelchair, includes tilt in space E1161
DME-Wheelchairs · category DD000N
2 suppliers21 claims21 services$178.36 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
2 suppliers17 claims17 services$173.96 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

Occupational Therapist
1100 9TH AVE
SEATTLE, WA 98101
Pharmacist
1100 9TH AVE, MS C3-PO
SEATTLE, WA 98101
Internal Medicine (Critical Care Medicine)
1100 9TH AVE
SEATTLE, WA 98101
Contractor
1100 9TH AVE
SEATTLE, WA 98101
Physical Medicine & Rehabilitation
1100 9TH AVE
SEATTLE, WA 98101
Speech-Language Pathologist
1100 9TH AVE, MS:H4-PMR
SEATTLE, WA 98101
Surgery
1100 9TH AVE
SEATTLE, WA 98101
Internal Medicine (Gastroenterology)
1100 9TH AVE
SEATTLE, WA 98101

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 Steven Hayashi's NPI number?

The NPI number for Steven Hayashi is 1285744318. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Steven Hayashi located?

Steven Hayashi practices at 1100 9th Ave, Seattle, WA 98101. The listed phone number is (206) 223-6600.

What is Steven Hayashi's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Steven Hayashi enrolled in Medicare?

Yes. Steven Hayashi 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.

What insurance does Steven Hayashi accept?

Health plans from PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Steven Hayashi 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.

Is Steven Hayashi affiliated with any hospitals?

According to CMS data, Steven Hayashi is affiliated with Virginia Mason Medical Center.

When was this NPI record last updated?

The NPPES record for Steven Hayashi was last updated on June 16, 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.