MR. WILLIAM MERRITT ECKERT CRNA
NPI 1477605665
Nurse Anesthetist, Certified Registered in Denver, CO
About Mr. William Merritt Eckert Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. WILLIAM MERRITT ECKERT CRNA (NPI 1477605665) is an individual nurse anesthetist, certified registered in Denver, Colorado, licensed in California (1015) and active in the NPI registry since January 2007. He is a graduate of Other (1983).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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. William Merritt Eckert 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 William Eckert reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Phoenix, AZ 85050
- Reassigned Medicare billing, Arizona enrollment
- 25 clinicians in this Medicare group
Castro Valley, CA 94546
- Reassigned Medicare billing, California enrollment
- 10 clinicians in this Medicare group
Waltham, MA 02451
- Reassigned Medicare billing, New York enrollment
- 42 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 4
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 80206 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 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DENVER, CO 80206
DENVER, CO 80206
DENVER, CO 80206
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 William Eckert's NPI number?
The NPI number for William Eckert is 1477605665. It was assigned to this individual provider in the NPPES registry on January 17, 2007.
Where is William Eckert located?
William Eckert practices at 55 Madison St Ste 200, Denver, CO 80206. The listed phone number is (303) 388-0599.
What is William Eckert's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is William Eckert enrolled in Medicare?
Yes. William Eckert 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 William Eckert's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Eckert reassigns Medicare benefits to 3 organizations: Union Hills Pain Partners LLC (Phoenix, AZ), Baec Anesthesia LLC (Castro Valley, CA) and Jjm Medical Services, PC (Waltham, MA). 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 William Eckert'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 William Eckert was last updated on November 16, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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. William Merritt Eckert, CRNA · NPI 1477605665
Nurse Anesthetist, Certified Registered physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since January 17, 2007.
## Identity
- **NPI:** 1477605665 (Entity type: Individual)
- **Enumerated:** January 17, 2007
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 1015 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 MADISON ST, STE 200, Denver, CO 80206-5419
- **Phone:** (303) 388-0599 · **Fax:** (303) 388-9805
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Union Hills Pain Partners LLC (NPI 1558858712, Phoenix, AZ); Baec Anesthesia LLC (NPI 1114446291, Castro Valley, CA); Jjm Medical Services, PC (NPI 1952548265, Waltham, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1983
## Record status
- **NPPES last updated:** November 16, 2010
- **Other identifiers:** Medicare UPIN R99261
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Source: [NPI Profile](https://npiprofile.com/npi/1477605665) · Data from the CMS NPPES public registry.