Marek Marcinkiewicz, MD
Family Medicine Physician · Fort Defiance, AZ
Marek Marcinkiewicz, MD is a family medicine physician with a practice address in Fort Defiance, Arizona, and NPI 1891951828, issued on Jul 30, 2008. Check the license on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marek Marcinkiewicz
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD60418687 WA
Self-reported in NPPES; status is on the state search - Practice location
- Corner OF Route N7 & N12, Fort Defiance, AZ 86504
- Phone
- (928) 729-8130
- Enumerated
- Jul 30, 2008
- Record last updated
- Dec 16, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (928) 729-8669
- Medicare enrollment
- Enrolled (PECOS I20150210000733); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Also registered at Corner OF Route N7 & N12
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chrisman Scherf, MDSurgery Physician1598827123
Verify Marek Marcinkiewicz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average family medicine physician in 2024
2,212 Medicare Part D claims for 144 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Lisinopril216 claims
- Single Use Swab126 claims
- Synthroid94 claims
- Atorvastatin Calcium93 claims
- Omeprazole78 claims
- Amlodipine Besylate70 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.
Bills Medicare through one group practice
- The Fort Defiance Indian Hospital Board, IncorporationFort Defiance, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marek Marcinkiewicz among 3,119 family medicine physician records in Arizona
Marek Marcinkiewicz, MD is one of 3,119 family medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 55% of them.
- NPI issued2008 · 55% of these records are older, 40% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1988 · median 2006 among the 1,775 with a school on file
- Record last updated2016 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 family medicine physician records list a practice address in Fort Defiance
They are 24 of the 590 NPPES records with a practice address in Fort Defiance, and 3,119 family medicine physician records in Arizona.
All 3,119 in Arizona → Every provider in Fort Defiance → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Walter Adam, MDFort Defiance, AZ 865041053368860
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Common questions
What is Marek Marcinkiewicz, MD's NPI number?
Marek Marcinkiewicz, MD's National Provider Identifier (NPI) is 1891951828, issued on Jul 30, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Marek Marcinkiewicz, MD located?
The NPPES record lists a practice address at Corner OF Route N7 & N12, Fort Defiance, AZ, 86504. Phone: (928) 729-8130. Providers update this record themselves, so call before visiting.
How can I verify Marek Marcinkiewicz, MD's license?
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 Marek Marcinkiewicz, MD prescribe under Medicare Part D?
In 2024, Marek Marcinkiewicz, MD had 2,212 Medicare Part D claims for 144 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.