NPPES file of Aug 9, 2026

Bertram Llewellyn Prosser, M.D.

Emergency Medical Services (Emergency Medicine) Physician · Tucson, AZ

Bertram Llewellyn Prosser, M.D. is an emergency medical services (emergency medicine) physician with a practice address in Tucson, Arizona, and NPI 1265745913, issued on Jul 23, 2010. Check the license (Arizona R72312, 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
1265745913
Name
Bertram Llewellyn Prosser
Credential
M.D.
Primary taxonomy
Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
License number
R72312 AZ
Self-reported in NPPES; status is on the state search
Practice location
2800 E Ajo Way, Tucson, AZ 85713
Phone
(520) 874-2000
Enumerated
Jul 23, 2010
Record last updated
Jul 16, 2014 (not updated in 12 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest emergency medical services (emergency medicine) physician records → All 58 in Arizona → Look up another NPI →

Also registered at 2800 E Ajo Way

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

  1. Anabel Aguayo, LCSWClinical Social Worker1023526290
  2. Nicholas Ahrendt, M.D.Psychiatry Physician1043744998
  3. Samantha AkersPsychiatry Physician1609700061
  4. Sommer Aldulaimi, M.D.Family Medicine Physician1194013813
  5. Abdulaziz Almulhim, PHARMDPharmacist1063931194
  6. Beyann Alzoubi, MDPsychiatry Physician1528757887

Verify Bertram Llewellyn Prosser in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license R72312    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

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1% more Medicare Part D claims than the average emergency medical services (emergency medicine) physician in 2024

294 Medicare Part D claims for 221 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D.

  1. Bertram Prosser294
  2. Specialty average292

Most prescribed

  1. Amoxicillin-Clavulanate Potass33 claims
  2. Prednisone28 claims
  3. Azithromycin25 claims
  4. Nitrofurantoin Mono-Macro16 claims
  5. Amoxicillin15 claims
  6. Doxycycline Monohydrate12 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: $29.43

1 payment: food and beverage; the largest payer was Merz North America, Inc. The 489 providers of this specialty with any payment received $337.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Bertram Prosser$29.43
  2. Specialty average$337.59

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

Bertram Llewellyn Prosser among 58 emergency medical services (emergency medicine) physician records in Arizona

Bertram Llewellyn Prosser, M.D. is one of 58 emergency medical services (emergency medicine) physician records with a practice address in Arizona. 69% 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 72% of them.

  • NPI issued2010 · 72% of these records are older, 22% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileNo · 43% of these records are
  • Record last updated2014 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medical Services (Emergency Medicine) Physician providers in Arizona

There are 58 emergency medical services (emergency medicine) physician records in Arizona.

All 58 in Arizona → Every provider in Tucson → Emergency Medical Services (Emergency Medicine) Physician nationwide →

The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes

  1. Brian Tenelshof, MDTucson, AZ 857121679584387
  2. Monica Olson, NPTucson, AZ 857241497253850
  3. Jeremy Racey, M.D.Tucson, AZ 857411144450131
  4. George Truckenmiller, MDTucson, AZ 857451821125618
  5. Jeffrey Beeley, M.D.Safford, AZ 855461811935703
  6. Clayton Hargis, D.O.Safford, AZ 855461346261807
  7. Mark Roberts, MDMorenci, AZ 855401457330383
  8. Gretchen Boise, MDGlobe, AZ 855011780891929

Common questions

What is Bertram Llewellyn Prosser, M.D.'s NPI number?

Bertram Llewellyn Prosser, M.D.'s National Provider Identifier (NPI) is 1265745913, issued on Jul 23, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Bertram Llewellyn Prosser, M.D. located?

The NPPES record lists a practice address at 2800 E Ajo Way, Tucson, AZ, 85713. Phone: (520) 874-2000. Providers update this record themselves, so call before visiting.

How can I verify Bertram Llewellyn Prosser, M.D.'s license?

NPPES lists Arizona license number R72312, 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 Bertram Llewellyn Prosser, M.D. prescribe under Medicare Part D?

In 2024, Bertram Llewellyn Prosser, M.D. had 294 Medicare Part D claims for 221 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. 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.