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Michael Charles Simm , CRNA

Nurse Anesthetist, Certified Registered β€’ Seattle, WA

Active NPI 1427894898 Individual Practitioner Male Practitioner
Practice location in NPPES

1959 Ne Pacific St
Seattle, WA 981950001

Call 2065205000 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1959 Ne Pacific St

Seattle, WA 981950001

Telephone 2065205000
Organization at the Same NPPES Address or Phone
University Of Washington Facility NPI 1326002049

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Industry payments (Open Payments)

No Open Payments records are listed for this clinician for 2021–2025.

Guide: How to read an Open Payments record

NPI first issued

2024

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Seattle and Washington

362 active clinicians are listed under Nurse Anesthetist, Certified Registered with a practice address in Seattle, WA (1,198 in Washington).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Seattle

0% of these 362 clinicians have the CMS telehealth indicator.

76.5% of these 362 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2026-11-02
Nurse Anesthetist, Certified Registered Primary Specialty

NUCC Taxonomy Code: 367500000X

License # reported to NPPES WA ARNP.AP.70184304-CRN

(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.

Registered Nurse

NUCC Taxonomy Code: 163W00000X

License # reported to NPPES WA RN.RN.61068761.MSL

(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Washington State Department of Health Provider Lookup.
Look Up on State Board Site

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

39 listed
Dr. Meagan Alvarado , MD

Internal Medicine - Transplant Hepatology

NPI 1003303363

Doctor of Medicine (M.D.)

Kathryn Anderson , ARNP

Nurse Practitioner

NPI 1003331414

Advanced Registered Nurse Practitioner

Mir Mohammad Ali Ansary

Internal Medicine

NPI 1003235698
Dr. Arjun Bhalla , PhD

Psychologist - Rehabilitation

NPI 1013680222

Doctor of Philosophy (Ph.D.)

Jennifer Branham , ARNP

Nurse Practitioner

NPI 1003251273

Advanced Registered Nurse Practitioner

Timothy Butterworth , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003325333

Certified Registered Nurse Anesthetist

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

10 Historical Events
πŸ“
Updated Practice Location November 02, 2026

Registered at 1959 NE PACIFIC ST, SEATTLE, WA 981950001 (Tel: 2065205000)

πŸ“
Updated Business Mailing Address November 02, 2026

Registered at PO BOX 50095, SEATTLE, WA 981455095 (Tel: 2065205700)

πŸ‘€
Provider Name / Credentials Updated November 02, 2026

Recorded as MICHAEL SIMM, CRNA

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) November 02, 2026

Nurse Anesthetist, Certified Registered (license number reported to NPPES: WA ARNP.AP.70184304-CRN)

βœ…
NPI Profile Active July 05, 2024

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) July 05, 2024

Registered at 1653 W CONGRESS PKWY # 12, CHICAGO, IL 606123833 (Tel: 3129427100)

πŸ“
Business Mailing Address (Initial Record) July 05, 2024

Registered at 235 W VAN BUREN ST UNIT 1605, CHICAGO, IL 606073932 (Tel: 3608408539)

πŸ‘€
Provider Name / Credentials (Initial Record) July 05, 2024

Recorded as MICHAEL SIMM, RN

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) July 05, 2024

Registered Nurse (license number reported to NPPES: WA RN61068761)

🟒
Initial NPI Registration & Enumeration July 05, 2024

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1427894898
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: July 05, 2024
Last Update: November 02, 2026
Sole Proprietor: No

Other Nurse Anesthetist, Certified Registereds in Seattle

All Nurse Anesthetist, Certified Registereds in Seattle

Mailing Address

Po Box 50095

Seattle, WA 981455095

Phone: 2065205700

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.