NPPES file of Aug 9, 2026

Marshall Lewis Cook, MD

Orthopaedic Surgery Physician · Fort Defiance, AZ

Marshall Lewis Cook, MD is an orthopaedic surgery physician with a practice address in Fort Defiance, Arizona, and NPI 1205813318, issued on Dec 29, 2005. Check the license (Arizona 19360, 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
1205813318
Name
Marshall Lewis Cook
Credential
MD
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License numbers
19360 AZ
AZ19360 AZ
Self-reported in NPPES; status is on the state search
Practice location
Corner OF Route N12 And N7, Fort Defiance, AZ 86504
Phone
(928) 729-8000
Enumerated
Dec 29, 2005
Record last updated
Mar 17, 2022
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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Also registered at Corner OF Route N12 And N7

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

  1. Moaz Abulfaraj, MDSurgery Physician1861797193
  2. Walter Adam, MDFamily Medicine Physician1053368860
  3. Margaret Adams, ARNPFamily Nurse Practitioner1427455682
  4. Sandra Adkins, DDSDentist1710918131
  5. Elizabeth Agre, PT, DPTPhysical Therapist1891268280
  6. Mohammad Akhavan Heidari, MDSurgery Physician1205041571

Verify Marshall Lewis Cook in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 19360
    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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96% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

15 Medicare Part D claims, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Marshall Cook15
  2. Specialty average346

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.

Marshall Lewis Cook among 462 orthopaedic surgery physician records in Arizona

Marshall Lewis Cook, MD is one of 462 orthopaedic surgery physician records with a practice address in Arizona. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 82% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileNo · 61% of these records are
  • Record last updated2022 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Arizona

There are 462 orthopaedic surgery physician records in Arizona.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Brian Carino, M.D.Fort Defiance, AZ 865041841496726
  2. John Thompson, M.D.Fort Defiance, AZ 865041326040577
  3. James Ingram, D.O.Bullhead City, AZ 864421891756011
  4. Michelle Klaumann, M.D.Bullhead City, AZ 864421508833187
  5. Robert Lock, II, D.O.Bullhead City, AZ 864421043287253
  6. Blake Stamper, D.O.Bullhead City, AZ 864421225003700
  7. Nathan Weaver, D.O.Bullhead City, AZ 864421386064863
  8. Eric Borofsky, MDFort Mohave, AZ 864261376518746

Common questions

What is Marshall Lewis Cook, MD's NPI number?

Marshall Lewis Cook, MD's National Provider Identifier (NPI) is 1205813318, issued on Dec 29, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Marshall Lewis Cook, MD located?

The NPPES record lists a practice address at Corner OF Route N12 And N7, Fort Defiance, AZ, 86504. Phone: (928) 729-8000. Providers update this record themselves, so call before visiting.

How can I verify Marshall Lewis Cook, MD's license?

NPPES lists Arizona license number 19360, 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 Marshall Lewis Cook, MD prescribe under Medicare Part D?

In 2024, Marshall Lewis Cook, MD had 15 Medicare Part D claims; the average among orthopaedic surgery physician prescribers was 346. 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.

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.