NPPES file of Aug 9, 2026

Derek Alden Merrill, M.D.

Anesthesiology Physician · Tucson, AZ

Derek Alden Merrill, M.D. is an anesthesiology physician with a practice address in Tucson, Arizona, and NPI 1942532551, issued on Feb 6, 2010. Check the license (Arizona 42921, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1942532551
Name
Derek Alden Merrill
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
42921 AZ
Self-reported in NPPES; status is on the state search
Practice location
3390 N Campbell Ave, Tucson, AZ 85719
Phone
(520) 795-7650
Enumerated
Feb 6, 2010
Record last updated
Feb 6, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(520) 325-1622
Medicare enrollment
Enrolled (PECOS I20100819000182); accepts Medicare assignment
Medical or professional school
University Of Iowa, Rj & L Carver College Of Medicine, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest anesthesiology physician records → All 1,473 in Arizona → Look up another NPI →

Also registered at 3390 N Campbell Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Julie Bell, M.D.Anesthesiology Physician1972773208
  2. Lynn Bianchi, MDAnesthesiology Physician1619969938
  3. Tony Borboa, M.D.Anesthesiology Physician1487646956
  4. Jenny Brick, MDAnesthesiology Physician1417940461
  5. Steven Brower, MDAnesthesiology Physician1134112196
  6. James Cain, MDAnesthesiology Physician1922091982

Verify Derek Alden Merrill in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 42921    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Arizona license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through 2 group practices

  1. Anesthesia Partners OF Arizona LLCPhoenix, AZ
  2. Banner Hospital Based Physicians Arizona LLCMesa, AZ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Derek Alden Merrill among 1,473 anesthesiology physician records in Arizona

Derek Alden Merrill, M.D. is one of 1,473 anesthesiology physician records with a practice address in Arizona. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 70% of them.

  • NPI issued2010 · 70% of these records are older, 28% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 67% of these records are
  • Graduated2006 · median 2003 among the 984 with a school on file
  • Record last updated2010 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

298 anesthesiology physician records list a practice address in Tucson

They are 298 of the 18,788 NPPES records with a practice address in Tucson, and 1,473 anesthesiology physician records in Arizona.

All 1,473 in Arizona → Every provider in Tucson → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Lynn Bianchi, MDTucson, AZ 857191619969938
  2. Tony Borboa, M.D.Tucson, AZ 857191487646956
  3. Jenny Brick, MDTucson, AZ 857191417940461
  4. Steven Brower, MDTucson, AZ 857191134112196
  5. James Cain, MDTucson, AZ 857191922091982
  6. Charles Clark, MDTucson, AZ 857191710970785
  7. Murray Dangelo, MDTucson, AZ 857191619960424
  8. Jeffrey Dowling, MDTucson, AZ 857191881687648

Common questions

What is Derek Alden Merrill, M.D.'s NPI number?

Derek Alden Merrill, M.D.'s National Provider Identifier (NPI) is 1942532551, issued on Feb 6, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Derek Alden Merrill, M.D. located?

The NPPES record lists a practice address at 3390 N Campbell Ave, Tucson, AZ, 85719. Phone: (520) 795-7650. Providers update this record themselves, so call before visiting.

How can I verify Derek Alden Merrill, M.D.'s license?

NPPES lists Arizona license number 42921, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.