N Engl J Med
Dr. Dejan Spaseski, MD
- Medicare services, 2024
- 585
- Medicare patients, 2024
- 188
- Part D claims, 2024
- 215
- Publications
- 1
- Hospital affiliations
- 4
- Practice address
- 1000 Fourth Street SW, Mason City, IA 50401
- Practice phone
- Call (641) 428-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Spaseski's professional email, personal email and mobile number
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Dr. Dejan Spaseski is an internist in Mason City, Iowa
Dr. Spaseski practices at MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health.
Dr. Spaseski's NPI, 1386219053, was assigned on May 25, 2021. Dr. Spaseski holds Illinois license 125077268.
- NPI
- 1386219053NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416351044
- NPI enumeration date
- May 25, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (641) 428-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dejan Spaseski practices at MercyOne North Iowa Medical Center in Mason City, Iowa
Dr. Spaseski's primary practice is MercyOne North Iowa Medical Center, at 1000 Fourth Street SW, Mason City, IA 50401 in Cerro Gordo County. The practice phone is (641) 428-7000.
- MercyOne North Iowa Medical Center1000 Fourth Street SW, Mason City, IA 50401 · Cerro Gordo CountyPhone(641) 428-7000
Source: Dmand AI Affiliation Data
Dr. Dejan Spaseski is affiliated with 5 sites of care and 1 medical group
Dr. Spaseski's primary practice is MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health. Dr. Spaseski is also affiliated with Hancock County Health System. The medical group on file is Cogent Healthcare of Iowa. Dmand AI also links Dr. Spaseski to 2 more hospitals and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Dejan Spaseski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Spaseski practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MercyOne North Iowa Medical Center | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Dejan Spaseski is one of 726 internists in Iowa
Internal medicine is Dr. Spaseski's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Spaseski is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Spaseski
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Dejan Spaseski billed Medicare for 585 services in 2024
CMS data shows 585 Medicare services from Dr. Spaseski across 4 procedure codes in 2024, for 188 Medicare patients. Medicare paid $50,923 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Spaseski compared with the Iowa median for internists, 2024
- Dr. Spaseski
- Iowa median
- Medicare services
- 585vs 574Close to median
- Medicare patients
- 188vs 26028% below
- Part D claims
- 25vs 16785% below
Medians across 689 internists in Iowa with Dmand AI profiles that report each measure.
Dr. Spaseski's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Spaseski and other internists in Iowa.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Dejan Spaseski treated 188 Medicare patients in 2024, average age 78
CMS counts 188 Medicare patients who saw Dr. Spaseski in 2024. The largest group is 75 to 84, with 60 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 2.04, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Spaseski's median patient age at 79, with 53% women.
Dr. Spaseski's Medicare patients by age, 2024
Dr. Spaseski's Medicare patients by sex, 2024
- Women10053%
- Men8847%
Chronic conditions among Dr. Spaseski's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Heart failure53%
- Chronic kidney disease48%
- Atrial fibrillation47%
- Diabetes47%
- Ischemic heart disease46%
Share of Medicare patients with each condition. A patient can have several.
Dr. Spaseski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 79
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Dejan Spaseski wrote 215 Medicare Part D claims in 2024
In 2024, Dr. Spaseski wrote 215 Medicare Part D claims for 72 patients. 87% of them were for generic drugs. CMS names the drug for 25 of them, across 2 drugs with 11 or more claims each, at $101 in total drug cost.
Dr. Spaseski's Part D claims by kind of drug, 2024
- Generic188 claims87%
- Brand-name and other27 claims13%
Dr. Spaseski's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Spaseski's Part D claims, 2024
- Antibiotics15%32 of 215 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Dejan Spaseski takes part in Medicare
Dr. Spaseski accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Dejan Spaseski has 1 publication on record
Dmand AI links 1 paper to Dr. Spaseski. Dr. Spaseski's most frequent co-author is Maja Boshkovska Spaseski, MD.
Dr. Spaseski's most frequent co-authors
Recent publications by Dr. Spaseski
See who Dr. Spaseski researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Spaseski works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Sources for Dr. Dejan Spaseski's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Dejan Spaseski
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Dejan Spaseski's NPI number?
Dr. Dejan Spaseski's NPI number is 1386219053. It was assigned on May 25, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Dejan Spaseski?
Dr. Dejan Spaseski is an internist in Mason City, Iowa. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Dejan Spaseski practice?
Dr. Spaseski practices at 1000 Fourth Street SW, Mason City, IA 50401. Dr. Spaseski's primary practice is MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health. Dmand AI also links Dr. Spaseski to 2 hospitals and 1 hospice.
What is Dr. Dejan Spaseski's office phone number?
The practice phone on file for Dr. Spaseski is (641) 428-7000.
What is Dr. Dejan Spaseski's medical license number?
Dr. Spaseski holds Illinois license 125077268.
Which hospitals is Dr. Dejan Spaseski affiliated with?
Dr. Spaseski practices at MercyOne North Iowa Medical Center in Mason City, Iowa. Dr. Spaseski is also affiliated with Hancock County Health System. Dmand AI links Dr. Spaseski to 2 more hospitals.
What medical group is Dr. Dejan Spaseski part of?
Dr. Spaseski is linked to Cogent Healthcare of Iowa.
Does Dr. Dejan Spaseski accept Medicare?
Yes. CMS data shows Dr. Spaseski billed Medicare for 585 services in 2024, and Dr. Spaseski accepts Medicare assignment.
How many Medicare patients does Dr. Dejan Spaseski see?
CMS counts 188 Medicare patients who saw Dr. Spaseski in 2024, with an average age of 78.
What services does Dr. Dejan Spaseski bill to Medicare?
In 2024, Dr. Spaseski's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99223).
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What drugs does Dr. Dejan Spaseski prescribe most?
In 2024 Medicare Part D data, Dr. Spaseski's most prescribed drugs by claims were Cefdinir and Furosemide.
How long has Dr. Dejan Spaseski been practicing?
Dr. Spaseski graduated from medical school in 2013, 13 years ago.
Does Dr. Dejan Spaseski do research?
Dmand AI links 1 publication to Dr. Spaseski.
Who does Dr. Dejan Spaseski publish with?
Dr. Spaseski's most frequent co-authors are Maja Boshkovska Spaseski, MD (1 shared paper).
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