John Y. Um, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Omaha, NE
John Y. Um, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Omaha, Nebraska, and NPI 1134346745, issued on Apr 18, 2007. Check the license on the Nebraska Board of Medicine and Surgery; the Medicare figures below come from public CMS files.
- Name
- John Y. Um
- Credential
- MD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License numbers
- 2007-01008 NC
A90965 CA
Self-reported in NPPES; status is on the state search - Practice location
- 988102 Nebraska Medical Center, Omaha, NE 68198
- Phone
- (402) 559-9800
- Enumerated
- Apr 18, 2007
- Record last updated
- Sep 17, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (402) 559-7929
- Medicaid ID
- 10026059800 NE
- Medicare enrollment
- Enrolled (PECOS I20090223000381); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 1999
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 35 in Nebraska → Look up another NPI →
Also registered at 988102 Nebraska Medical Center
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ibrahim Abdullah, MDSurgery Physician1366509804
- Walter Bussey, PAPhysician Assistant1497840763
- Kaitlin Dougherty, MDEmergency Medicine Physician1609367275
- David Gannon, M.D.Pulmonary Disease Physician1982707204
- Michelle Johnson, M.D.Internal Medicine Physician1609816016
- Justine Miller, PAPhysician Assistant1780913749
Verify John Y. Um in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNebraska Board of Medicine and SurgeryCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
31 Medicare Part D claims, against an average of 101 among the 2,587 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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: $1,030.26
11 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 4,047 providers of this specialty with any payment received $7,828.84 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
- Unmc PhysiciansOmaha, NE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Y. Um among 35 thoracic surgery (cardiothoracic vascular surgery) physician records in Nebraska
John Y. Um, MD is one of 35 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Nebraska. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 46% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1999 · median 2005 among the 25 with a school on file
- Record last updated2012 · 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 208G00000X and a Nebraska practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Nebraska
There are 35 thoracic surgery (cardiothoracic vascular surgery) physician records in Nebraska.
All 35 in Nebraska → Every provider in Omaha → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- David BerkheimOmaha, NE 681981275832537
- Anthony Castleberry, M.D.Omaha, NE 681981427285931
- Amber Duda, DOOmaha, NE 681981699203539
- Kim Duncan, MDOmaha, NE 681981801844097
- Brett Duncan, M.D.Omaha, NE 681981720309917
- Jeffrey Gold, M.D.Omaha, NE 681981093719965
- Rudy Lackner, MDOmaha, NE 681981578512604
- Erik Lewis, M.D.Omaha, NE 681981316381106
Common questions
What is John Y. Um, MD's NPI number?
John Y. Um, MD's National Provider Identifier (NPI) is 1134346745, issued on Apr 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Y. Um, MD located?
The NPPES record lists a practice address at 988102 Nebraska Medical Center, Omaha, NE, 68198. Phone: (402) 559-9800. Providers update this record themselves, so call before visiting.
How can I verify John Y. Um, MD's license?
Search the Nebraska Board of Medicine and Surgery at https://www.nebraska.gov/LISSearch/search.cgi. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Y. Um, MD prescribe under Medicare Part D?
In 2024, John Y. Um, MD had 31 Medicare Part D claims; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. 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.