Irene L. Dejak, MD
Obesity Medicine (Internal Medicine) Physician · Cleveland, OH
Irene L. Dejak, MD is an obesity medicine (internal medicine) physician with a practice address in Cleveland, Ohio, and NPI 1407885411, issued on Jul 2, 2006. Check the license (Ohio 3508-2166-D, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Irene L. Dejak
- Credential
- MD
- Primary taxonomy
- Obesity Medicine (Internal Medicine) Physician 207RB0002X
- License numbers
- 3508-2166-D OH
35082166 OH
OH35082166 OH
Self-reported in NPPES; status is on the state search - Practice location
- 9500 Euclid Ave, Cleveland, OH 44195
- Phone
- (800) 223-2273
- Enumerated
- Jul 2, 2006
- Record last updated
- Aug 3, 2026
- Medicaid ID
- 2425914 OH
- Medicare enrollment
- Enrolled (PECOS I20061016000300); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
7 nearest obesity medicine (internal medicine) physician records → All 8 in Ohio → Look up another NPI →
Also registered at 9500 Euclid Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Irene L. Dejak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 3508-2166-DCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average obesity medicine (internal medicine) physician in 2024
607 Medicare Part D claims for 96 beneficiaries, against an average of 742 among the 106 providers of this specialty who prescribed in Part D.
Most prescribed
- Topiramate199 claims
- Mounjaro91 claims
- Metformin Hcl Er88 claims
- Trulicity87 claims
- Ozempic40 claims
- Metformin Hcl27 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.
Industry payments in 2024: $122.18
1 payment: food and beverage; the largest payer was Lilly USA, LLC. The 80 providers of this specialty with any payment received $6,310.67 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Summa Physicians LLCHudson, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Obesity Medicine (Internal Medicine) Physician providers in Ohio
There are 8 obesity medicine (internal medicine) physician records in Ohio.
All 8 in Ohio → Every provider in Cleveland → Obesity Medicine (Internal Medicine) Physician nationwide →
The 7 obesity medicine (internal medicine) physician records with the nearest ZIP codes
- Winfield Butsch, MD MSCCleveland, OH 441951144260761
- Archana Gorty, MDCleveland, OH 441951588615652
- Christopher Anzeveno, MDMiddleburg Heights, OH 441301235387713
- Norma Atkinson, MDCleveland, OH 441091306475777
- Donald Cundiff, M.D.Sandusky, OH 448701376580050
- Katherine Lyons, MDWest Chester, OH 450691043673288
- Robert Zee, D.O.Lancaster, OH 431301992796775
Common questions
What is Irene L. Dejak, MD's NPI number?
Irene L. Dejak, MD's National Provider Identifier (NPI) is 1407885411, issued on Jul 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Irene L. Dejak, MD located?
The NPPES record lists a practice address at 9500 Euclid Ave, Cleveland, OH, 44195. Phone: (800) 223-2273. Providers update this record themselves, so call before visiting.
How can I verify Irene L. Dejak, MD's license?
NPPES lists Ohio license number 3508-2166-D, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Irene L. Dejak, MD prescribe under Medicare Part D?
In 2024, Irene L. Dejak, MD had 607 Medicare Part D claims for 96 beneficiaries; the average among obesity medicine (internal medicine) physician prescribers was 742. 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.