MICHAEL R. GUEST CRNA
NPI 1649357187
Nurse Anesthetist, Certified Registered in Mesa, AZ

Q: What is Michael Guest's NPI number?

The NPI number for Michael Guest is 1649357187. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Q: What is Michael Guest's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Q: When was this NPI record last updated?

The NPPES record for Michael Guest was last updated on August 26, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 November 01, 2006

87.65/100

CMS Quality Rating

160 W UNIVERSITY DR STE 1, MESA, AZ 85201(602) 618-5614(602) 938-4954 Get Directions Write a Review

NPPES record last updated: August 26, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 26, 2021, Aug 12, 2021 (2 updates tracked since 2021).

On this page

About Michael R. Guest Crna NPPES

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

MICHAEL R. GUEST CRNA (NPI 1649357187) is an individual nurse anesthetist, certified registered in Mesa, Arizona, licensed in Arizona (CRNA0523) and active in the NPI registry since November 2006. He maintains 2 additional practice locations.

NPPES Registry Identity

NPI1649357187

Entity TypeIndividualMale

Primary Taxonomy367500000X

Provider Legal NameMICHAEL R. GUESTCredential: CRNA

Location Address160 W UNIVERSITY DR STE 1Mesa, AZ 85201-5833

Mailing Address2525 W Beryl AvePhoenix, AZ 85021-1606 · (602) 618-5614 · Fax (602) 938-4954

Phone(602) 618-5614

Fax(602) 938-4954

Sole ProprietorYes

Enumeration DateNovember 1, 2006

Last NPPES UpdateAugust 26, 20212 updates tracked since enumeration

NPPES CertifiedAugust 26, 2021

✔ NPI 1649357187 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code367500000X

Licenses✔ Licensed in AZ · CRNA0523✔ Licensed in NY · 550057-1

Definition

(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.

160 W UNIVERSITY DR STE 1, Mesa, AZ 85201

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Secondary Practice Locations 2

Location 14800 N 22nd St Ste 120Phoenix, AZ 85016-4962 · Phone (602) 955-1000 · Fax (602) 508-4830

Location 24921 E Bell Rd Ste 102Scottsdale, AZ 85254-6002 · Phone (602) 787-9100 · Fax (602) 508-4830

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc, Imperial Insurance Companies, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michael R. Guest Crna is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignments

Medicare enrollment records show Michael Guest reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Southwestern Eye Center Ltd

6.4 mi

Optometrist

3301 N MILLER RD, STE 140
Scottsdale, AZ 85251

Reassigned Medicare billing, Arizona enrollment
212 clinicians in this Medicare group

NPI 1851624647 (480) 947-7651

Barnet Dulaney Perkins Eye Center, PC

13 mi

Ophthalmology

4800 N 22ND ST
Phoenix, AZ 85016

Reassigned Medicare billing, Arizona enrollment
224 clinicians in this Medicare group

NPI 1376574707 (602) 955-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

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.

Anesthesia for lens surgery 00142

Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.

298 services261 patients

Anesthesia for other procedure on eye 00140

Anesthesia for an eye procedure involves administering medication to numb your eye and surrounding area, ensuring you feel no pain during the operation. It can be local (only the eye area) or general (whole body). It's safe and helps make the procedure comfortable.

36 services32 patients

Anesthesia for retinal surgery 00145

Anesthesia for retinal surgery involves using medications to numb your eye and surrounding area. This prevents pain and discomfort during the procedure. You may also receive medication to help you relax. The anesthesia can be local (just your eye) or general (you're asleep).

16 services15 patients

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.

87.65/100

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

Scored as part of a group practice

Quality

100

Promoting Interoperability

100

Improvement Activities

Cost

58.84

Other Providers at the Same Location NPPES 4

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

ANODYNE SERVICES INC

Anesthesiology

160 W UNIVERSITY DR STE 1
MESA, AZ 85201

Maricopa County (480) 833-0014

MELVIN R STRADLING CRNA

Nurse Anesthetist, Certified Registered

160 W UNIVERSITY DR STE 1
MESA, AZ 85201

Maricopa County (480) 202-4515

BARNET DULANEY PERKINS EYE CENTER, PC

Clinic/Center (Ambulatory Surgical)

160 W UNIVERSITY DR STE 1
MESA, AZ 85201

Maricopa County (480) 833-0014

MARICOPA ANESTHESIA LTD

Nurse Anesthetist, Certified Registered

160 W UNIVERSITY DR STE 1
MESA, AZ 85201

Maricopa County (480) 202-4515

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 Michael Guest's NPI number?

The NPI number for Michael Guest is 1649357187. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Michael Guest located?

Michael Guest practices at 160 W University Dr Ste 1, Mesa, AZ 85201. The listed phone number is (602) 618-5614.

What is Michael Guest's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Michael Guest enrolled in Medicare?

Yes. Michael Guest is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Michael Guest's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Guest reassigns Medicare benefits to 2 organizations: Southwestern Eye Center Ltd (Scottsdale, AZ) and Barnet Dulaney Perkins Eye Center, PC (Phoenix, AZ). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Guest's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Guest accept?

Health plans from Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc and Imperial Insurance Companies, Inc. list Michael Guest 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.

When was this NPI record last updated?

The NPPES record for Michael Guest was last updated on August 26, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.