Nathan J. Cook, DO
Emergency Medicine Physician · Casper, WY
Nathan J. Cook, DO is an emergency medicine physician with a practice address in Casper, Wyoming, and NPI 1912355082, issued on May 31, 2016. Check the license (Wyoming 12200A, as entered in NPPES) on the Wyoming Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Nathan J. Cook
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 12200A WY
Self-reported in NPPES; status is on the state search - Practice location
- 1233 E 2ND St, Casper, WY 82601
- Phone
- (307) 577-7201
- Enumerated
- May 31, 2016
- Record last updated
- Jun 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190723002328); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2016
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 111 in Wyoming → Look up another NPI →
Also registered at 1233 E 2ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Arross, R.PH.Pharmacist1588654420
- Rhonda Aune, RNFARegistered Nurse First Assistant1144318379
- Mark Babcock, D.O.Family Medicine Physician1912346321
- David Baxter, MDAnesthesiology Physician1861450801
- Brittany Bennett, RDRegistered Dietitian1508168667
- Ryan Benson, M.D.Emergency Medicine Physician1023308491
Verify Nathan J. Cook in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWyoming Board of Medicine
Search for license 12200ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average emergency medicine physician in 2024
167 Medicare Part D claims for 126 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Cefuroxime20 claims
- Ondansetron Odt15 claims
- Amoxicillin-Clavulanate Potass14 claims
- Prednisone14 claims
- Cephalexin11 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Emergency Medical Physicians PCCasper, WY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan J. Cook among 111 emergency medicine physician records in Wyoming
Nathan J. Cook, DO is one of 111 emergency medicine physician records with a practice address in Wyoming. 84% 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 85% of them.
- NPI issued2016 · 85% of these records are older, 10% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2016 · median 2009 among the 75 with a school on file
- Record last updated2020 · 59% 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 Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Wyoming
There are 111 emergency medicine physician records in Wyoming.
All 111 in Wyoming → Every provider in Casper → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Ryan Benson, M.D.Casper, WY 826011023308491
- Karl Boehm, DOCasper, WY 826011952756546
- Michael Bruno, MDCasper, WY 826011316961238
- George Carmen, MDCasper, WY 826011760403638
- Jonna Cubin, M.D.Casper, WY 826011013043835
- Megan GrubeCasper, WY 826011811314099
- Ronald Iverson, MDCasper, WY 826011750302634
- Morgan Johnson, MD, MSCasper, WY 826011366947228
Common questions
What is Nathan J. Cook, DO's NPI number?
Nathan J. Cook, DO's National Provider Identifier (NPI) is 1912355082, issued on May 31, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Nathan J. Cook, DO located?
The NPPES record lists a practice address at 1233 E 2ND St, Casper, WY, 82601. Phone: (307) 577-7201. Providers update this record themselves, so call before visiting.
How can I verify Nathan J. Cook, DO's license?
NPPES lists Wyoming license number 12200A, as entered by the provider. Search the Wyoming Board of Medicine at https://wyomedboard.wyo.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nathan J. Cook, DO prescribe under Medicare Part D?
In 2024, Nathan J. Cook, DO had 167 Medicare Part D claims for 126 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Nathan J. Cook, DO's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.