NPPES file of Aug 9, 2026

Ralph E. Day, MD

Emergency Medicine Physician · Winslow, AZ

Ralph E. Day, MD is an emergency medicine physician with a practice address in Winslow, Arizona, and NPI 1184648255, issued on Jul 26, 2006. Check the license (Arizona 33704, as entered in NPPES) on the Arizona Medical Board; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1184648255
Name
Ralph E. Day
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
33704 AZ
Self-reported in NPPES; status is on the state search
Practice location
1501 N Williamson Ave, Winslow, AZ 86047
Phone
(928) 289-4691
Enumerated
Jul 26, 2006
Record last updated
Jul 9, 2007 (not updated in 19 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 medicine physician records → All 1,494 in Arizona → Look up another NPI →

Also registered at 1501 N Williamson Ave

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

  1. Bryan Feinstein, MDEmergency Medicine Physician1417419771
  2. Vinicius Knabben, M.D.Emergency Medicine Physician1558718619
  3. William Kvien, MDEmergency Medicine Physician1235148784
  4. Dale NortonFamily Nurse Practitioner1205553245
  5. Caterina Palumbo, MDEmergency Medicine Physician1033557400
  6. Thayer Phelan, MDEmergency Medicine Physician1821209354

Verify Ralph E. Day in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 33704    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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Ralph E. Day among 1,494 emergency medicine physician records in Arizona

Ralph E. Day, MD is one of 1,494 emergency medicine physician records with a practice address in Arizona. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 62% newer
  • In a Medicare fileNo · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 55% of these records are
  • Record last updated2007 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

8 emergency medicine physician records list a practice address in Winslow

They are 8 of the 259 NPPES records with a practice address in Winslow, and 1,494 emergency medicine physician records in Arizona. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,494 in Arizona → Every provider in Winslow → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Bryan Feinstein, MDWinslow, AZ 860471417419771
  2. Vinicius Knabben, M.D.Winslow, AZ 860471558718619
  3. William Kvien, MDWinslow, AZ 860471235148784
  4. Caterina Palumbo, MDWinslow, AZ 860471033557400
  5. Thayer Phelan, MDWinslow, AZ 860471821209354
  6. Jordan Price, DOWinslow, AZ 860471780179259
  7. Jason Taylor, DOWinslow, AZ 860471003908195
  8. Dana Ger, M.D.Williams, AZ 860461780694802

Common questions

What is Ralph E. Day, MD's NPI number?

Ralph E. Day, MD's National Provider Identifier (NPI) is 1184648255, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ralph E. Day, MD located?

The NPPES record lists a practice address at 1501 N Williamson Ave, Winslow, AZ, 86047. Phone: (928) 289-4691. Providers update this record themselves, so call before visiting.

How can I verify Ralph E. Day, MD's license?

NPPES lists Arizona license number 33704, 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. 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.