GUARDIAN ANESTHESIA SERVICES, INC
NPI 1013946797
Anesthesiology in Parker, CO
About Guardian Anesthesia Services, Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GUARDIAN ANESTHESIA SERVICES, INC (NPI 1013946797) is a healthcare organization registered as an anesthesiology in Parker, Colorado and active in the NPI registry since July 2006. The organization lists Anthony Keever, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Guardian Anesthesia Services, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
53Medicare enrollment records show 53 clinicians reassign Medicare billing to Guardian Anesthesia Services, Inc, which bills Medicare for the services they deliver. Of these, 5 practice at this address and 13 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 2
Nearest to this location (20)
See all 53Greenwood Village, CO 80111
Greenwood Village, CO 80111
Greenwood Village, CO 80111
Greenwood Village, CO 80111
Greenwood Village, CO 80111
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Guardian Anesthesia Services, Inc's NPI number?
The NPI number for Guardian Anesthesia Services, Inc is 1013946797. It was assigned to this organization in the NPPES registry on July 3, 2006.
Where is Guardian Anesthesia Services, Inc located?
Guardian Anesthesia Services, Inc is located at 9395 Crown Crest Blvd, Parker, CO 80138. The listed phone number is (303) 269-4000.
What is Guardian Anesthesia Services, Inc's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Guardian Anesthesia Services, Inc enrolled in Medicare?
Yes. Guardian Anesthesia Services, Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Guardian Anesthesia Services, Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 53 clinicians in 2 Medicare specialties reassign their Medicare billing to Guardian Anesthesia Services, Inc. A 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 the clinician's services. The largest specialties are Certified Registered Nurse Anesthetist (CRNA) (40) and Anesthesiology (13). Of these, 5 practice at this address and 13 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Guardian Anesthesia Services, Inc was last updated on July 7, 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.
# Guardian Anesthesia Services, Inc · NPI 1013946797
Anesthesiology organization in Parker, Colorado. Organization record, active in the CMS NPPES registry since July 3, 2006.
## Identity
- **NPI:** 1013946797 (Entity type: Organization)
- **Enumerated:** July 3, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **Organization subpart:** No
- **Authorized official:** Anthony Keever, PRESIDENT
## Practice location
- **Address:** 9395 CROWN CREST BLVD, Parker, CO 80138-8573
- **Phone:** (303) 269-4000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 53 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Certified Registered Nurse Anesthetist (CRNA) (40), Anesthesiology (13); 5 practice at this address and 13 within 10 miles; [full list](https://npiprofile.com/npi/1013946797/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 7, 2021
- **Other identifiers:** Medicaid 08808783 (CO)
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Source: [NPI Profile](https://npiprofile.com/npi/1013946797) · Data from the CMS NPPES public registry.