SYDNEY A. MAHAFFAY CRNA
NPI 1104178334
Nurse Anesthetist, Certified Registered in Phoenix, AZ
About Sydney A. Mahaffay Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SYDNEY A. MAHAFFAY CRNA (NPI 1104178334) is an individual nurse anesthetist, certified registered in Phoenix, Arizona, licensed in Arizona (CRNA0885) and active in the NPI registry since October 2012. She maintains a secondary practice location in Scottsdale and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Sydney A. Mahaffay 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
3Medicare enrollment records show Sydney Mahaffay reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Phoenix, AZ 85008
- Reassigned Medicare billing, Arizona enrollment
- 1,490 clinicians in this Medicare group
Phoenix, AZ 85032
- Reassigned Medicare billing, Arizona enrollment
- 42 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85008 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.
PHOENIX, AZ 85008
PHOENIX, AZ 85008
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 Sydney Mahaffay's NPI number?
The NPI number for Sydney Mahaffay is 1104178334. It was assigned to this individual provider in the NPPES registry on October 11, 2012.
Where is Sydney Mahaffay located?
Sydney Mahaffay practices at 2601 E Roosevelt St, Phoenix, AZ 85008. The listed phone number is (602) 344-5011.
What is Sydney Mahaffay's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Sydney Mahaffay enrolled in Medicare?
Yes. Sydney Mahaffay 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 Sydney Mahaffay's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sydney Mahaffay reassigns Medicare benefits to 3 organizations: District Medical Group, Inc (Phoenix, AZ), Amsurg North Valley Anesthesia LLC (Phoenix, AZ) and Anesthesia Partners & Management LLC (Brighton, MI). 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 Sydney Mahaffay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sydney Mahaffay accept?
Health plans from Cigna HealthCare of Arizona, Inc and Imperial Insurance Companies, Inc. list Sydney Mahaffay 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 Sydney Mahaffay was last updated on August 27, 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.
# Sydney A. Mahaffay, CRNA · NPI 1104178334
Nurse Anesthetist, Certified Registered physician in Phoenix, Arizona. Individual provider, active in the CMS NPPES registry since October 11, 2012.
## Identity
- **NPI:** 1104178334 (Entity type: Individual)
- **Enumerated:** October 11, 2012
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** CRNA0885 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 2601 E ROOSEVELT ST, Phoenix, AZ 85008-4973
- **Phone:** (602) 344-5011 · **Fax:** (602) 344-0779
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): District Medical Group, Inc (NPI 1518290626, Phoenix, AZ); Amsurg North Valley Anesthesia LLC (NPI 1629351788, Phoenix, AZ); Anesthesia Partners & Management LLC (NPI 1336530997, Brighton, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** August 27, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1104178334) · Data from the CMS NPPES public registry.