TANDY GUSTIN CRNA
NPI 1588903199
Nurse Anesthetist, Certified Registered in Fairfax, VA
About Tandy Gustin Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TANDY GUSTIN CRNA (NPI 1588903199) is an individual nurse anesthetist, certified registered in Fairfax, Virginia, licensed in Virginia (0001194334) and active in the NPI registry since February 2013. She is affiliated with Billings Clinic and is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Tandy Gustin 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 Tandy Gustin reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fairfox, VA 22030
- Reassigned Medicare billing, District of Columbia enrollment
- 26 clinicians in this Medicare group
Alexandria, VA 22310
- Reassigned Medicare billing, District of Columbia enrollment
- 74 clinicians in this Medicare group
Alexandria, VA 22306
- Reassigned Medicare billing, District of Columbia enrollment
- 634 clinicians in this Medicare group
Miles City, MT 59301
- Reassigned Medicare billing, Montana enrollment
- 1,264 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 6
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Billings Clinic
Acute Care Hospitals · Billings, MTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 22033 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.
FAIRFAX, VA 22033
FAIRFAX, VA 22033
FAIRFAX, VA 22033
FAIRFAX, VA 22033
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 Tandy Gustin's NPI number?
The NPI number for Tandy Gustin is 1588903199. It was assigned to this individual provider in the NPPES registry on February 4, 2013.
Where is Tandy Gustin located?
Tandy Gustin practices at 3600 Joseph Siewick Dr, Fairfax, VA 22033. The listed phone number is (703) 391-3129.
What is Tandy Gustin's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Tandy Gustin enrolled in Medicare?
Yes. Tandy Gustin 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 Tandy Gustin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tandy Gustin reassigns Medicare benefits to 4 organizations: Ambulatory Anesthesia Services Inc (Fairfox, VA), Ambulatory Anesthesia Associates LLC (Alexandria, VA), Northstar Anesthesia Of Virginia, LLC (Alexandria, VA) and Billings Clinic (Miles City, MT). 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 Tandy Gustin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tandy Gustin accept?
Health plans from Blue Cross and Blue Shield of Montana and Mountain Health CO-OP list Tandy Gustin 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.
Is Tandy Gustin affiliated with any hospitals?
According to CMS data, Tandy Gustin is affiliated with Billings Clinic.
When was this NPI record last updated?
The NPPES record for Tandy Gustin was last updated on March 20, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Tandy Gustin, CRNA · NPI 1588903199
Nurse Anesthetist, Certified Registered physician in Fairfax, Virginia. Individual provider, active in the CMS NPPES registry since February 4, 2013.
## Identity
- **NPI:** 1588903199 (Entity type: Individual)
- **Enumerated:** February 4, 2013
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 0001194334 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 3600 JOSEPH SIEWICK DR, Fairfax, VA 22033-1709
- **Phone:** (703) 391-3129 · **Fax:** (703) 391-3006
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Ambulatory Anesthesia Services Inc (NPI 1548363740, Fairfox, VA); Ambulatory Anesthesia Associates LLC (NPI 1720192230, Alexandria, VA); Northstar Anesthesia Of Virginia, LLC (NPI 1194488791, Alexandria, VA); Billings Clinic (NPI 1427194836, Miles City, MT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** March 20, 2015
- **Other identifiers:** Medicaid 1588903199 (VA)
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Source: [NPI Profile](https://npiprofile.com/npi/1588903199) · Data from the CMS NPPES public registry.