MARRY LYNN WILLIAMS CRNA
NPI 1346242880
Nurse Anesthetist, Certified Registered in Phoenix, AZ
About Marry Lynn Williams Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARRY LYNN WILLIAMS CRNA (NPI 1346242880) is an individual nurse anesthetist, certified registered in Phoenix, Arizona, licensed in Arizona (CRNA0874) and active in the NPI registry since August 2005. She maintains a secondary practice location in Phoenix and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 5
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Marry Lynn Williams Crna 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.
Medicare Billing Reassignments
10Medicare enrollment records show Marry Williams reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Phoenix, AZ 85016
- Reassigned Medicare billing, Arizona enrollment
- 224 clinicians in this Medicare group
Scottsdale, AZ 85251
- Reassigned Medicare billing, Arizona enrollment
- 212 clinicians in this Medicare group
Phoenix, AZ 85037
- Reassigned Medicare billing, Arizona enrollment
- 423 clinicians in this Medicare group
Scottsdale, AZ 85258
- Reassigned Medicare billing, Arizona enrollment
- 106 clinicians in this Medicare group
Phoenix, AZ 85024
- Reassigned Medicare billing, Arizona enrollment
- 518 clinicians in this Medicare group
Mesa, AZ 85206
- Reassigned Medicare billing, Arizona enrollment
- 298 clinicians in this Medicare group
Gilbert, AZ 85297
- Reassigned Medicare billing, Arizona enrollment
- 29 clinicians in this Medicare group
Surprise, AZ 85374
- Reassigned Medicare billing, Arizona enrollment
- 11 clinicians in this Medicare group
Richardson, TX 75082
- Reassigned Medicare billing, Arizona enrollment
- 390 clinicians in this Medicare group
Brighton, MI 48114
- Reassigned Medicare billing, Arizona enrollment
- 370 clinicians in this Medicare group
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85004 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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.
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 Marry Williams's NPI number?
The NPI number for Marry Williams is 1346242880. It was assigned to this individual provider in the NPPES registry on August 15, 2005.
Where is Marry Williams located?
Marry Williams practices at 1850 N Central Ave Suite 1600, Phoenix, AZ 85004. The listed phone number is (602) 262-8900.
What is Marry Williams's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Marry Williams enrolled in Medicare?
Yes. Marry Williams 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.
Which organizations bill Medicare for Marry Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marry Williams reassigns Medicare benefits to 10 organizations: Barnet Dulaney Perkins Eye Center, PC (Phoenix, AZ), Southwestern Eye Center Ltd (Scottsdale, AZ), Greater Anesthesia Solutions (Phoenix, AZ), Grand Canyon Anesthesia LLC (Scottsdale, AZ), Valley Anesthesiology Consultants, Inc. (Phoenix, AZ) and 5 more organizations, listed in the Medicare section above. 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 Marry Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marry Williams accept?
Health plans from Blue Cross Blue Shield of Arizona, Oscar Health Plan, Inc. and Oscar Insurance Company list Marry Williams 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 Marry Williams was last updated on March 12, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Marry Lynn Williams, CRNA · NPI 1346242880
Nurse Anesthetist, Certified Registered physician in Phoenix, Arizona. Individual provider, active in the CMS NPPES registry since August 15, 2005.
## Identity
- **NPI:** 1346242880 (Entity type: Individual)
- **Enumerated:** August 15, 2005
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** CRNA0874 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 1850 N CENTRAL AVE, SUITE 1600, Phoenix, AZ 85004-4527
- **Phone:** (602) 262-8900
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 10 organizations under Medicare reassignment (form CMS-855R): Barnet Dulaney Perkins Eye Center, PC (NPI 1376574707, Phoenix, AZ); Southwestern Eye Center Ltd (NPI 1851624647, Scottsdale, AZ); Greater Anesthesia Solutions (NPI 1124430244, Phoenix, AZ); Grand Canyon Anesthesia LLC (NPI 1356822902, Scottsdale, AZ); Valley Anesthesiology Consultants, Inc. (NPI 1285660704, Phoenix, AZ); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** March 12, 2019
- **Other identifiers:** Medicaid 302591800 (FL); Other 430076420 (FL); Other 59072104 (AL); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1346242880) · Data from the CMS NPPES public registry.