NPPES file of Aug 9, 2026

Stephen A. Denagy, M4915

Internal Medicine Physician · Ammon, ID

Stephen A. Denagy, M4915 is an internal medicine physician with a practice address in Ammon, Idaho, and NPI 1336273085, issued on Mar 15, 2007. Check the license (Idaho M4915, as entered in NPPES) on the Idaho Board of Medicine; 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
1336273085
Name
Stephen A. Denagy
Credential
M4915
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
M4915 ID
Self-reported in NPPES; status is on the state search
Practice location
2705 E 17TH St, Ammon, ID 83406
Phone
(208) 346-7500
Enumerated
Mar 15, 2007
Record last updated
Apr 3, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(208) 346-7501
Medicaid ID
002648500 ID
Medicare enrollment
Enrolled (PECOS I20090312000669); accepts Medicare assignment
Medical or professional school
Hahneman Medical College Of The Pacific, 1982
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 internal medicine physician records → All 453 in Idaho → Look up another NPI →

Also registered at 2705 E 17TH St

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

  1. Tiffini Aicher, CPRPSocial Worker1295275196
  2. Ryan AllredCounselor1821780388
  3. Kevin AndersonSocial Worker1649816182
  4. Makayla AndrusSchool Social Worker1942034061
  5. Chloe AponteCase Manager/Care Coordinator1912731266
  6. Amber Arias, MSWSocial Worker1780419820

Verify Stephen A. Denagy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIdaho Board of Medicine
    Search for license M4915    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 Idaho license search

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2.3 times the Medicare Part D claims of the average internal medicine physician in 2024

7,418 Medicare Part D claims for 193 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Stephen Denagy7,418
  2. Specialty average3,176

Most prescribed

  1. Lamotrigine236 claims
  2. Lithium Carbonate231 claims
  3. Prazosin Hcl211 claims
  4. Quetiapine Fumarate210 claims
  5. Clozapine204 claims
  6. Trazodone Hcl204 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: $581.50

34 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Stephen Denagy$581.50
  2. Specialty average$1,303.06

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. Pearl Health ClinicAmmon, ID

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

Stephen A. Denagy among 453 internal medicine physician records in Idaho

Stephen A. Denagy, M4915 is one of 453 internal medicine physician records with a practice address in Idaho. 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 2007, is newer than 37% of them.

  • NPI issued2007 · 37% of these records are older, 55% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated1982 · median 2011 among the 254 with a school on file
  • Record last updated2015 · 44% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Idaho practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Internal Medicine Physician providers in Idaho

There are 453 internal medicine physician records in Idaho.

All 453 in Idaho → Every provider in Ammon → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Tausha AllenIdaho Falls, ID 834041558822379
  2. Ella Baker, MDIdaho Falls, ID 834041396475380
  3. Christel Coronado Flores, MDIdaho Falls, ID 834041174273700
  4. Jaden Cunningham, DOIdaho Falls, ID 834041730948449
  5. Parker DeanIdaho Falls, ID 834041255058152
  6. Samantha Eteve, DOIdaho Falls, ID 834041295363687
  7. Thien Hoang, MDIdaho Falls, ID 834041760270888
  8. Sean HugginsIdaho Falls, ID 834041801393152

Common questions

What is Stephen A. Denagy, M4915's NPI number?

Stephen A. Denagy, M4915's National Provider Identifier (NPI) is 1336273085, issued on Mar 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Stephen A. Denagy, M4915 located?

The NPPES record lists a practice address at 2705 E 17TH St, Ammon, ID, 83406. Phone: (208) 346-7500. Providers update this record themselves, so call before visiting.

How can I verify Stephen A. Denagy, M4915's license?

NPPES lists Idaho license number M4915, as entered by the provider. Search the Idaho Board of Medicine at https://dopl.idaho.gov/bom/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Stephen A. Denagy, M4915 prescribe under Medicare Part D?

In 2024, Stephen A. Denagy, M4915 had 7,418 Medicare Part D claims for 193 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.