NPPES file of Aug 9, 2026

David Nigel Thornton, M.D.

Family Medicine Physician · Flagstaff, AZ

David Nigel Thornton, M.D. is a family medicine physician with a practice address in Flagstaff, Arizona, and NPI 1952753733, issued on Jul 6, 2016. Check the license (Arizona 73149, 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
1952753733
Name
David Nigel Thornton
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
73149 AZ
Self-reported in NPPES; status is on the state search
Practice location
107 E Oak Ave Ste 201, Flagstaff, AZ 86001
Phone
(928) 380-5689
Enumerated
Jul 6, 2016
Record last updated
Jun 25, 2024
Medicare enrollment
Enrolled (PECOS I20240715002656); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 family medicine physician records → All 3,119 in Arizona → Look up another NPI →

Also registered at 107 E Oak Ave Ste 201

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

  1. Joseph Lach, NPFamily Nurse Practitioner1285405514
  2. Madeline TilleyFamily Nurse Practitioner1669289070

Verify David Nigel Thornton in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 73149    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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72% fewer Medicare Part D claims than the average family medicine physician in 2024

999 Medicare Part D claims for 243 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 32 claims were for opioids.

  1. David Thornton999
  2. Specialty average3,544

Most prescribed

  1. Amlodipine Besylate53 claims
  2. Levothyroxine Sodium39 claims
  3. Atorvastatin Calcium34 claims
  4. Lisinopril27 claims
  5. Methylprednisolone27 claims
  6. Amoxicillin-Clavulanate Potass25 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.

Industry payments in 2024: $14.65

1 payment: food and beverage; the largest payer was Sun Pharmaceutical Industries Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. David Thornton$14.65
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Northern Arizona Healthcare CorporationFlagstaff, AZ

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

David Nigel Thornton among 3,119 family medicine physician records in Arizona

David Nigel Thornton, 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 2016, is newer than 76% of them.

  • NPI issued2016 · 76% of these records are older, 22% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2016 · median 2006 among the 1,775 with a school on file
  • Record last updated2024 · 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).

61 family medicine physician records list a practice address in Flagstaff

They are 61 of the 2,419 NPPES records with a practice address in Flagstaff, and 3,119 family medicine physician records in Arizona.

All 3,119 in Arizona → Every provider in Flagstaff → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Demetra Barr Reynolds, M.D.Flagstaff, AZ 860011790721777
  2. Amy Britt, MDFlagstaff, AZ 860011558473744
  3. Leon Cattolico, D.O.Flagstaff, AZ 860011720084197
  4. Laurice Coats, MDFlagstaff, AZ 860011386647816
  5. Kent Diehl, MDFlagstaff, AZ 860011194745133
  6. Timothy Fleming, MDFlagstaff, AZ 860011407804099
  7. Byron Hutto, MDFlagstaff, AZ 860011457300253
  8. Meghan O'Donnell, MDFlagstaff, AZ 860011659323186

Common questions

What is David Nigel Thornton, M.D.'s NPI number?

David Nigel Thornton, M.D.'s National Provider Identifier (NPI) is 1952753733, issued on Jul 6, 2016. An NPI identifies a provider in billing; it is not a license.

Where is David Nigel Thornton, M.D. located?

The NPPES record lists a practice address at 107 E Oak Ave Ste 201, Flagstaff, AZ, 86001. Phone: (928) 380-5689. Providers update this record themselves, so call before visiting.

How can I verify David Nigel Thornton, M.D.'s license?

NPPES lists Arizona license number 73149, 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 David Nigel Thornton, M.D. prescribe under Medicare Part D?

In 2024, David Nigel Thornton, M.D. had 999 Medicare Part D claims for 243 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.

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.