Dejan Spaseski, MD
Internal Medicine Physician · Mason City, IA
Dejan Spaseski, MD is an internal medicine physician with a practice address in Mason City, Iowa, and NPI 1386219053, issued on May 25, 2021. Check the license on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Dejan Spaseski
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 125077268 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1000 4TH St SW, Mason City, IA 50401
- Phone
- (641) 428-7000
- Enumerated
- May 25, 2021
- Record last updated
- Aug 7, 2024
- Medicare enrollment
- Enrolled (PECOS I20240803000456); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 871 in Iowa → Look up another NPI →
Also registered at 1000 4TH St SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Dejan Spaseski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
215 Medicare Part D claims for 72 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Cefdinir13 claims
- Furosemide12 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
- Cogent Healthcare OF Iowa PCMason City, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dejan Spaseski among 871 internal medicine physician records in Iowa
Dejan Spaseski, MD is one of 871 internal medicine physician records with a practice address in Iowa. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 70% of them.
- NPI issued2021 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated2013 · median 2008 among the 386 with a school on file
- Record last updated2024 · 46% 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 Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
36 internal medicine physician records list a practice address in Mason City
They are 36 of the 866 NPPES records with a practice address in Mason City, and 871 internal medicine physician records in Iowa.
All 871 in Iowa → Every provider in Mason City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Phillip Alscher, MDMason City, IA 504011700993888
- Vaughan Cipperly, MDMason City, IA 504011942235429
- Patrick Dunlay, DOMason City, IA 504011811004294
- Melissa Frame, MDMason City, IA 504011881796712
- Bruce Harlan, MDMason City, IA 504011336256593
- Mark Johnson, MDMason City, IA 504011013923127
- Janice Kirsch, MDMason City, IA 504011992809636
- Ali Mardan, PHD, MD, RPVI, FACPMason City, IA 504011619905353
Common questions
What is Dejan Spaseski, MD's NPI number?
Dejan Spaseski, MD's National Provider Identifier (NPI) is 1386219053, issued on May 25, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Dejan Spaseski, MD located?
The NPPES record lists a practice address at 1000 4TH St SW, Mason City, IA, 50401. Phone: (641) 428-7000. Providers update this record themselves, so call before visiting.
How can I verify Dejan Spaseski, MD's license?
Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Dejan Spaseski, MD prescribe under Medicare Part D?
In 2024, Dejan Spaseski, MD had 215 Medicare Part D claims for 72 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.
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.