ANDREW ISTOK CRNA
NPI 1548682180
Nurse Anesthetist, Certified Registered in Phoenix, AZ
About Andrew Istok Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANDREW ISTOK CRNA (NPI 1548682180) is an individual nurse anesthetist, certified registered in Phoenix, Arizona, licensed in Arizona (MSLRN50714) and active in the NPI registry since January 2014. He is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses
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
Andrew Istok 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
4Medicare enrollment records show Andrew Istok reassigns Medicare billing to 4 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
Gilbert, AZ 85234
- Reassigned Medicare billing, Arizona enrollment
- 1,081 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.
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.
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 Andrew Istok's NPI number?
The NPI number for Andrew Istok is 1548682180. It was assigned to this individual provider in the NPPES registry on January 16, 2014.
Where is Andrew Istok located?
Andrew Istok practices at 2601 E Roosevelt St, Phoenix, AZ 85008. The listed phone number is (602) 344-5011.
What is Andrew Istok's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Andrew Istok enrolled in Medicare?
Yes. Andrew Istok 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 Andrew Istok's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Istok reassigns Medicare benefits to 4 organizations: District Medical Group, Inc (Phoenix, AZ), Banner Hospital Based Physicians Arizona LLC (Gilbert, AZ), Anesthesia Partners Of Arizona LLC (Richardson, TX) 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 Andrew Istok's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Andrew Istok accept?
Health plans from Blue Cross Blue Shield of Arizona, Oscar Health, Oscar Health Plan, Inc. and Oscar Insurance Company list Andrew Istok 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 Andrew Istok was last updated on January 16, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Andrew Istok, CRNA · NPI 1548682180
Nurse Anesthetist, Certified Registered physician in Phoenix, Arizona. Individual provider, active in the CMS NPPES registry since January 16, 2014.
## Identity
- **NPI:** 1548682180 (Entity type: Individual)
- **Enumerated:** January 16, 2014
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** MSLRN50714 (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:** 4 organizations under Medicare reassignment (form CMS-855R): District Medical Group, Inc (NPI 1093948275, Phoenix, AZ); Banner Hospital Based Physicians Arizona LLC (NPI 1124374822, Gilbert, AZ); Anesthesia Partners Of Arizona LLC (NPI 1619452901, Richardson, TX); Anesthesia Partners & Management LLC (NPI 1336530997, Brighton, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** January 16, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1548682180) · Data from the CMS NPPES public registry.