Jay Matthew Portnoy, MD
Pediatric Allergy/Immunology Physician · Kansas City, MO
Jay Matthew Portnoy, MD is a pediatric allergy/immunology physician with a practice address in Kansas City, Missouri, and NPI 1568429066, issued on Apr 27, 2006. Check the license (Missouri R5E99, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Jay Matthew Portnoy
- Credential
- MD
- Primary taxonomy
- Pediatric Allergy/Immunology Physician 2080P0201X
- License numbers
- R5E99 MO
04-22504 KS
Self-reported in NPPES; status is on the state search - Practice location
- 2401 Gillham RD, Kansas City, MO 64108
- Phone
- (816) 234-3097
- Enumerated
- Apr 27, 2006
- Record last updated
- Dec 5, 2025
- Fax
- (816) 346-1301
- Medicaid ID
- 202178406 MO
- Entity
- Type 1 · individual
8 nearest pediatric allergy/immunology physician records → All 27 in Missouri → Look up another NPI →
Also registered at 2401 Gillham RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shahab Abdessalam, MDSurgical Oncology Physician1174697502
- Mohamed Aashiq Abdul Ghayum, M.D.Pediatrics Physician1881211985
Verify Jay Matthew Portnoy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license R5E99Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average pediatric allergy/immunology physician in 2024
12 Medicare Part D claims, against an average of 259 among the 198 providers of this specialty who prescribed in Part D.
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: $14,463.77
31 payments; by number, the most common kind was food and beverage; the largest payer was Genentech USA, Inc. The 289 providers of this specialty with any payment received $7,101.54 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.
Jay Matthew Portnoy among 27 pediatric allergy/immunology physician records in Missouri
Jay Matthew Portnoy, MD is one of 27 pediatric allergy/immunology physician records with a practice address in Missouri. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 41% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 41% of these records are
- Record last updated2025 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0201X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Allergy/Immunology Physician providers in Missouri
There are 27 pediatric allergy/immunology physician records in Missouri.
All 27 in Missouri → Every provider in Kansas City → Pediatric Allergy/Immunology Physician nationwide →
The 8 pediatric allergy/immunology physician records with the nearest ZIP codes
- Paul Dowling, M.D.Kansas City, MO 641081073561742
- Mary Jacobson, MDKansas City, MO 641081699137075
- Bridgette Jones, MDKansas City, MO 641081477503282
- Thao Le, DO/MBAKansas City, MO 641081205330321
- Christopher Miller, MDKansas City, MO 641081326004300
- Mamta Reddy, M.D.Kansas City, MO 641081144302290
- Salman Aljubran, MDKansas City, MO 641111124255328
- Maggie Barnthouse, MDKansas City, MO 641111770921835
Common questions
What is Jay Matthew Portnoy, MD's NPI number?
Jay Matthew Portnoy, MD's National Provider Identifier (NPI) is 1568429066, issued on Apr 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jay Matthew Portnoy, MD located?
The NPPES record lists a practice address at 2401 Gillham RD, Kansas City, MO, 64108. Phone: (816) 234-3097. Providers update this record themselves, so call before visiting.
How can I verify Jay Matthew Portnoy, MD's license?
NPPES lists Missouri license number R5E99, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jay Matthew Portnoy, MD prescribe under Medicare Part D?
In 2024, Jay Matthew Portnoy, MD had 12 Medicare Part D claims; the average among pediatric allergy/immunology physician prescribers was 259. 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.