DR. DEREK ALDEN MERRILL M.D.
NPI 1942532551
Anesthesiology in Tucson, AZ
About Dr. Derek Alden Merrill M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DEREK ALDEN MERRILL M.D. (NPI 1942532551) is an individual anesthesiology provider in Tucson, Arizona, licensed in Arizona (42921) and active in the NPI registry since February 2010. He is enrolled in Medicare PECOS and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (2006).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Derek Alden Merrill M.d. 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 Derek Merrill reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Tan Valley, AZ 85140
- Reassigned Medicare billing, Arizona enrollment
- 1,081 clinicians in this Medicare group
Chandler, AZ 85224
- Reassigned Medicare billing, Arizona enrollment
- 26 clinicians in this Medicare group
Richardson, TX 75082
- Reassigned Medicare billing, Arizona enrollment
- 390 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
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.
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 Derek Merrill's NPI number?
The NPI number for Derek Merrill is 1942532551. It was assigned to this individual provider in the NPPES registry on February 6, 2010.
Where is Derek Merrill located?
Derek Merrill practices at 3390 N Campbell Ave Suite 110, Tucson, AZ 85719. The listed phone number is (520) 795-7650.
What is Derek Merrill's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Derek Merrill enrolled in Medicare?
Yes. Derek 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 Derek Merrill's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Derek Merrill reassigns Medicare benefits to 3 organizations: Banner Hospital Based Physicians Arizona LLC (San Tan Valley, AZ), Network Anesthesia Consultants LLC (Chandler, AZ) and Anesthesia Partners Of Arizona LLC (Richardson, TX). 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 Derek Merrill's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Derek Merrill accept?
Health plans from Blue Cross Blue Shield of Arizona, Oscar Health, Oscar Health Plan, Inc. and Oscar Insurance Company list Derek 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.
When was this NPI record last updated?
The NPPES record for Derek Merrill was last updated on February 6, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Dr. Derek Alden Merrill, M.D. · NPI 1942532551
Anesthesiology physician in Tucson, Arizona. Individual provider, active in the CMS NPPES registry since February 6, 2010.
## Identity
- **NPI:** 1942532551 (Entity type: Individual)
- **Enumerated:** February 6, 2010
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 42921 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 3390 N CAMPBELL AVE, SUITE 110, Tucson, AZ 85719-7313
- **Phone:** (520) 795-7650 · **Fax:** (520) 325-1622
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Banner Hospital Based Physicians Arizona LLC (NPI 1275889891, San Tan Valley, AZ); Network Anesthesia Consultants LLC (NPI 1083125843, Chandler, AZ); Anesthesia Partners Of Arizona LLC (NPI 1619452901, Richardson, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Iowa, Rj & L Carver College Of Medicine, class of 2006
## Record status
- **NPPES last updated:** February 6, 2010
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Source: [NPI Profile](https://npiprofile.com/npi/1942532551) · Data from the CMS NPPES public registry.