NPPES file of Aug 9, 2026

Collin Udall, M.D.

Family Medicine Physician · Mesa, AZ

Collin Udall, M.D. is a family medicine physician with a practice address in Mesa, Arizona, and NPI 1861495434, issued on May 27, 2005. Check the license (Arizona 15439, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1861495434
Name
Collin Udall
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
15439 AZ
Self-reported in NPPES; status is on the state search
Practice location
3048 E Baseline RD, Mesa, AZ 85204
Phone
(480) 632-1117
Enumerated
May 27, 2005
Record last updated
Sep 13, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(480) 632-1118
Medicare enrollment
Enrolled (PECOS I20040729000041); accepts Medicare assignment
Medical or professional school
University Of Arizona College Of Medicine, 1982
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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Also registered at 3048 E Baseline RD

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

  1. Stuart AgrenSpecialist1851392781
  2. Brian Andrews, M.DInternal Medicine Physician1326127473
  3. Julie Cajolet-Eckhardt, PSY.D.Psychologist1023160587
  4. Natalie CarreonBehavior Technician1205753027
  5. Lucas Christensen, P.T.Physical Therapist1013323443
  6. Donald Clifford, D.D.S.Dentist1619937240

Verify Collin Udall in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 15439
    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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2.0 times the Medicare Part D claims of the average family medicine physician in 2024

7,236 Medicare Part D claims for 680 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 79 claims were for opioids.

  1. Collin Udall7,236
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium501 claims
  2. Levothyroxine Sodium482 claims
  3. Rosuvastatin Calcium452 claims
  4. Metformin Hcl427 claims
  5. Lisinopril323 claims
  6. Losartan Potassium309 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Summit Medical Group Arizona LLCGlendale, AZ

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

Collin Udall among 3,119 family medicine physician records in Arizona

Collin Udall, M.D. is one of 3,119 family medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 88% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated1982 · median 2006 among the 1,775 with a school on file
  • Record last updated2011 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

194 family medicine physician records list a practice address in Mesa

They are 194 of the 9,151 NPPES records with a practice address in Mesa, and 3,119 family medicine physician records in Arizona.

The 8 family medicine physician records with the nearest ZIP codes

  1. Cory Anderson, MDMesa, AZ 852041720050727
  2. Cuauhtemoc Gallardo-Prado, M.D.Mesa, AZ 852041700116605
  3. Allen Germaine, MDMesa, AZ 852041689658908
  4. Donald Griner, D.O.Mesa, AZ 852041821091497
  5. Marvin Hammond, MDMesa, AZ 852041851371876
  6. John Kuss, DOMesa, AZ 852041366412504
  7. Luz Lopez, M.DMesa, AZ 852041124081823
  8. Mariolga Mercado, D.O.Mesa, AZ 852041861452575

Common questions

What is Collin Udall, M.D.'s NPI number?

Collin Udall, M.D.'s National Provider Identifier (NPI) is 1861495434, issued on May 27, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Collin Udall, M.D. located?

The NPPES record lists a practice address at 3048 E Baseline RD, Mesa, AZ, 85204. Phone: (480) 632-1117. Providers update this record themselves, so call before visiting.

How can I verify Collin Udall, M.D.'s license?

NPPES lists Arizona license number 15439, 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.

How much does Collin Udall, M.D. prescribe under Medicare Part D?

In 2024, Collin Udall, M.D. had 7,236 Medicare Part D claims for 680 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

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.

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.