MR. RYAN C. NAU CRNA
NPI 1518108232
Nurse Anesthetist, Certified Registered in Winchester, VA
About Mr. Ryan C. Nau Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. RYAN C. NAU CRNA (NPI 1518108232) is an individual nurse anesthetist, certified registered in Winchester, Virginia, licensed in Colorado (C-APN0000274-C-CRNA) and active in the NPI registry since March 2009. He is enrolled in Medicare PECOS and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
Mr. Ryan C. Nau 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 Ryan Nau reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Aspen, CO 81611
- Reassigned Medicare billing, Colorado enrollment
- 26 clinicians in this Medicare group
Glenwood Springs, CO 81601
- Reassigned Medicare billing, Colorado enrollment
- 32 clinicians in this Medicare group
Craig, CO 81625
- Reassigned Medicare billing, Colorado enrollment
- 48 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 2
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 22601 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.
WINCHESTER, VA 22601
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 Ryan Nau's NPI number?
The NPI number for Ryan Nau is 1518108232. It was assigned to this individual provider in the NPPES registry on March 9, 2009. The provider is also known as Mr. Ryan C Nau Ryan Nau, Crna.
Where is Ryan Nau located?
Ryan Nau practices at 1840 Amherst St, Winchester, VA 22601. The listed phone number is (540) 536-8000.
What is Ryan Nau's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Ryan Nau enrolled in Medicare?
Yes. Ryan Nau 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 Ryan Nau's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Nau reassigns Medicare benefits to 3 organizations: Aspen Anesthesia, Inc (Aspen, CO), Glenwood Anesthesia Professionals, PC (Glenwood Springs, CO) and Eastern Rio Blanco County Health Service District (Craig, CO). 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 Ryan Nau's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ryan Nau was last updated on March 30, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mr. Ryan C. Nau, CRNA · NPI 1518108232
Nurse Anesthetist, Certified Registered physician in Winchester, Virginia. Individual provider, active in the CMS NPPES registry since March 9, 2009.
## Identity
- **NPI:** 1518108232 (Entity type: Individual)
- **Enumerated:** March 9, 2009
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** C-APN0000274-C-CRNA (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 1840 AMHERST ST, Winchester, VA 22601-2808
- **Phone:** (540) 536-8000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Aspen Anesthesia, Inc (NPI 1811042898, Aspen, CO); Glenwood Anesthesia Professionals, PC (NPI 1013335389, Glenwood Springs, CO); Eastern Rio Blanco County Health Service District (NPI 1366149734, Craig, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** March 30, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1518108232) · Data from the CMS NPPES public registry.