DONALD M MERRILL MD
NPI 1679555494
Anesthesiology in Aurora, CO
About Donald M Merrill Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DONALD M MERRILL MD (NPI 1679555494) is an individual anesthesiology provider in Aurora, Colorado, licensed in Colorado (49090) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Mercy Medical Center - Cedar Rapids, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Donald M Merrill Md 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
7Medicare enrollment records show Donald Merrill reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Greenwood Village, CO 80111
- Reassigned Medicare billing, Colorado enrollment
- 971 clinicians in this Medicare group
Parker, CO 80138
- Reassigned Medicare billing, Colorado enrollment
- 54 clinicians in this Medicare group
Edwards, CO 81632
- Reassigned Medicare billing, Colorado enrollment
- 128 clinicians in this Medicare group
Scottsbluff, NE 69361
- Reassigned Medicare billing, Nebraska enrollment
- 61 clinicians in this Medicare group
Kearney, NE 68845
- Reassigned Medicare billing, Nebraska enrollment
- 187 clinicians in this Medicare group
Sioux City, IA 51104
- Reassigned Medicare billing, Iowa enrollment
- 281 clinicians in this Medicare group
Cedar Rapids, IA 52401
- Reassigned Medicare billing, Iowa enrollment
- Medicare enrollment name: Mercy Medical Center
- 387 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Medical Center - Cedar Rapids
Acute Care Hospitals · Cedar Rapids, IASt Lukes Regional Medical Center
Acute Care Hospitals · Sioux City, IAMedicare 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.
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 Donald Merrill's NPI number?
The NPI number for Donald Merrill is 1679555494. It was assigned to this individual provider in the NPPES registry on November 17, 2005.
Where is Donald Merrill located?
Donald Merrill practices at 12605 E 16th Ave, Aurora, CO 80045. The listed phone number is (720) 848-0000.
What is Donald Merrill's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Donald Merrill enrolled in Medicare?
Yes. Donald Merrill 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 Donald Merrill's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Donald Merrill reassigns Medicare benefits to 7 organizations: Us Anesthesia Partners Of Colorado Inc. (Greenwood Village, CO), Guardian Anesthesia Services, Inc (Parker, CO), Anesthesia Partners Of Colorado (Edwards, CO), Northstar Anesthesia Of Nebraska LLC (Scottsbluff, NE), Bryan Hospital Kearney (Kearney, NE) and 2 more organizations, listed in the Medicare section above. 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 Donald Merrill's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Donald Merrill accept?
Health plans from Oscar Insurance Company and Wellmark Health Plan of Iowa, Inc. list Donald Merrill 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 Donald Merrill affiliated with any hospitals?
According to CMS data, Donald Merrill is affiliated with Mercy Medical Center - Cedar Rapids and St Lukes Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Donald Merrill was last updated on November 29, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Donald M Merrill, MD · NPI 1679555494
Anesthesiology physician in Aurora, Colorado. Individual provider, active in the CMS NPPES registry since November 17, 2005.
## Identity
- **NPI:** 1679555494 (Entity type: Individual)
- **Enumerated:** November 17, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 49090 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 12605 E 16TH AVE, Aurora, CO 80045-2545
- **Phone:** (720) 848-0000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Us Anesthesia Partners Of Colorado Inc. (NPI 1922365782, Greenwood Village, CO); Guardian Anesthesia Services, Inc (NPI 1013946797, Parker, CO); Anesthesia Partners Of Colorado (NPI 1457702409, Edwards, CO); Northstar Anesthesia Of Nebraska LLC (NPI 1578187670, Scottsbluff, NE); Bryan Hospital Kearney (NPI 1033875380, Kearney, NE); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Nebraska College Of Medicine, class of 2000
## Record status
- **NPPES last updated:** November 29, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1679555494) · Data from the CMS NPPES public registry.