Immunization, PassiveInfusions, SubcutaneousInjections, Subcutaneous
Dr. Roger Hiro Kobayashi, MD
NPI1093707754
- Medicare services, 2021
- 2,428
- Part D claims, 2024
- 21
- Publications
- 34
- Clinical trials
- 4
- Hospital affiliations
- 1
- Practice address
- 2222 Lincoln Ave, York, NE 68467
- Practice phone
- Call (402) 362-6671
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Roger Hiro Kobayashi is an allergist and immunologist in York, Nebraska
Dr. Kobayashi practices at York General Hospital in York, Nebraska, part of York General Hospital.
Dr. Kobayashi's NPI, 1093707754, was assigned on August 18, 2005. Dr. Kobayashi graduated from UNMC in 1975. Dr. Kobayashi's Nebraska license number on file is 15260.
NPI and contact details
- NPI
- 1093707754NPI Registry (opens in a new tab)
- NPI enumeration date
- August 18, 2005
- NPI status
- Active
- Practice phone
- (402) 362-6671
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Roger Hiro Kobayashi practices at York General Hospital in York, Nebraska
Dr. Kobayashi's primary practice is York General Hospital, at 2222 Lincoln Ave, York, NE 68467 in York County. The practice phone is (402) 362-6671.
- York General Hospital2222 Lincoln Ave, York, NE 68467 · York CountyPhone(402) 362-6671
Source: Dmand AI Affiliation Data
Dr. Roger Hiro Kobayashi is affiliated with 1 site of care
Dr. Kobayashi's primary practice is York General Hospital in York, Nebraska, part of York General Hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Roger Hiro Kobayashi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kobayashi practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| York General Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Roger Hiro Kobayashi is one of 23 allergists and immunologists in Nebraska
Allergy and immunology is Dr. Kobayashi's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Kobayashi is board certified in allergy & immunology by the American Board of Allergy and Immunology. Dmand AI has Dr. Kobayashi's licenses on file in 3 states: Nebraska, California and Iowa.
Specialties and state licenses
- Allergy and immunology, NebraskaPrimary
- California license
- Iowa license
Allergists and immunologists near Dr. Kobayashi
Counts of allergists and immunologists 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. Roger Hiro Kobayashi billed Medicare for 2,428 services in 2021
CMS data shows 2,428 Medicare services from Dr. Kobayashi across 8 procedure codes in 2021. Medicare paid $73,837 for them. Every service was in an office.
Medicare services, 20212,428
Paid by Medicare$73,837
Procedure codes8
Dr. Kobayashi's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Drugs given in the office
- 2020: 02021: 1,695
- Tests and treatments
- 2020: 3252021: 41227%
- Office and hospital visits
- 2020: 2952021: 3219%
Dr. Kobayashi compared with the Nebraska median for allergists and immunologists, 2021
- Dr. Kobayashi
- Nebraska median
- Medicare services
- 2,428vs 1,72141% above
- Part D claims
- 130vs 38766% below
Medians across 25 allergists and immunologists in Nebraska with Dmand AI profiles that report each measure.
Dr. Kobayashi's most billed Medicare procedure codes, 2021
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. Kobayashi and other allergists and immunologists in Nebraska.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Roger Hiro Kobayashi's patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Kobayashi's median patient age at 50, with 38% women.
Dr. Kobayashi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women38%
- Men62%
Source: Dmand AI Patient Panel Data
Dr. Roger Hiro Kobayashi wrote 21 Medicare Part D claims in 2024
In 2024, Dr. Kobayashi wrote 21 Medicare Part D claims. They cover 6 drugs, with $10,168 in total drug cost. In 2021, CMS named 658 claims across 24 drugs.
Part D claims, 202421
Drugs named by CMS6
Total drug cost$10,168
Dr. Kobayashi's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 6582022: 13080%
Drugs named by CMS: 6 in 2022, 24 in 2021.
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
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Dr. Roger Hiro Kobayashi has 34 publications on record
Dmand AI links 34 papers to Dr. Kobayashi, published from 2016 to 2024. 2018 was the busiest year, with 4. The most frequent topics are Immunoglobulins, Intravenous, Immunoglobulin G and Immunologic Deficiency Syndromes. Dr. Kobayashi has published most often in Immunotherapy. Dr. Kobayashi's most frequent co-authors are Sudhir Gupta, MD, Hans D. Ochs and Thomas P. Atkinson, MD.
Papers34
Years published2016 to 2024
Dr. Kobayashi's papers by year, 2016 to 2024
Topics Dr. Kobayashi writes about most
- Immunoglobulins, Intravenous
- Immunoglobulin G
- Immunologic Deficiency Syndromes
- Agammaglobulinemia
- Immunoglobulins
- Infusions, Subcutaneous
- Injections, Subcutaneous
- Antibodies, Viral
Dr. Kobayashi's most frequent co-authors
Recent publications by Dr. Kobayashi
Expert Rev Clin Immunol
Drug-Related Side Effects and Adverse ReactionsImmunoglobulin GImmunoglobulins, Intravenous
Immunotherapy
Immunization, PassiveImmunoglobulins, IntravenousImmunologic Deficiency Syndromes
See who Dr. Kobayashi researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kobayashi works with, so you can find a warm path to the right allergists and immunologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Roger Hiro Kobayashi has worked on 4 clinical trials
Dmand AI links Dr. Kobayashi to 4 clinical trials. Conditions studied include Primary Immunodeficiency Diseases, Immunologic Deficiency Syndromes and Mucocutaneous Lymph Node Syndrome. Octapharma sponsors the most, 3. Open Payments lists research payments to Dr. Kobayashi that name 2 trials.
Conditions in Dr. Kobayashi's trials
- Primary Immunodeficiency Diseases
- Immunologic Deficiency Syndromes
- Mucocutaneous Lymph Node Syndrome
- Purpura, Thrombocytopenic, Idiopathic
Investigators on the most trials with Dr. Kobayashi
- Sudhir Gupta, MD3 shared trials
- Ai Lan D. Kobayashi, MD2 shared trials
- James N. Moy, MD2 shared trials
Recent clinical trials with Dr. Kobayashi
Safety and Efficacy Study of a 10% Intravenous Immune Globulin Solution in Subjects With Primary Immunodeficiency Disorders (opens in a new tab)
CompletedPhase 3
Mucocutaneous Lymph Node SyndromePurpura, Thrombocytopenic, IdiopathicImmune Globulin Intravenous (Human), 10%
$3,000 in research paymentsPrimary Immunodeficiency DiseasesImmunologic Deficiency SyndromesCUTAQUIG
$5,800 in research paymentsPrimary Immunodeficiency DiseasesImmunologic Deficiency SyndromesOctanorm 16.5%
Primary Immunodeficiency DiseasesImmunologic Deficiency SyndromesOctagam 5%Other marketed IVIG product
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Roger Hiro Kobayashi received $100,120 in industry payments from 2016 to 2024
CMS Open Payments shows 354 general payments to Dr. Kobayashi from 26 drug and device companies from 2016 to 2024. Travel and lodging make up the largest share, 31% of the total. Octapharma USA, Inc. paid the most, $52,441. It also lists 5 research payments totaling $10,100 from 2018 to 2023, naming 2 clinical trials.
General payments to Dr. Kobayashi by program year, 2016 to 2024
General payments to Dr. Kobayashi by kind, 2016 to 2024
$100.1Kin total
- Travel and lodging$31,53231%
- Honoraria$28,85029%
- Consulting fees$15,08415%
- Speaker and faculty fees$12,83413%
- Other$11,82012%
Companies that paid Dr. Kobayashi the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Roger Hiro Kobayashi has 6 awards and honors on record
Dmand AI lists 6 awards for Dr. Kobayashi, most recently Certificate of Appreciation [for distinguished service] in 2023.
Awards and honors for Dr. Kobayashi
- 2023
- Certificate of Appreciation [for distinguished service]
- 2016
- American Academy of Allergy Asthma & immunology Outstanding Volunteer Faculty Award
- 2015
- Certifcate of Recognition for Outstanding Contributions
- Volunteer Faculty Award UCLA School of Medicine
- Undated
- AAAAI Fellow
- Patient Advocacy Award
Source: Dmand AI Professional Profile Data
Dr. Roger Hiro Kobayashi graduated from UNMC
Dr. Kobayashi graduated from UNMC in 1975. Dr. Kobayashi is a member of AAAAI and AAP.
- Medical school
- Board certified in allergy & immunology
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Sources for Dr. Roger Hiro Kobayashi'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 Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Roger Hiro Kobayashi
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. Roger Hiro Kobayashi's NPI number?
Dr. Roger Hiro Kobayashi's NPI number is 1093707754. It was assigned on August 18, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Roger Hiro Kobayashi?
Dr. Roger Hiro Kobayashi is an allergist and immunologist in York, Nebraska. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Roger Hiro Kobayashi practice?
Dr. Kobayashi practices at 2222 Lincoln Ave, York, NE 68467. Dr. Kobayashi's primary practice is York General Hospital in York, Nebraska, part of York General Hospital.
What is Dr. Roger Hiro Kobayashi's office phone number?
The practice phone on file for Dr. Kobayashi is (402) 362-6671.
What is Dr. Roger Hiro Kobayashi's medical license number?
Dr. Kobayashi's Nebraska license number on file is 15260, one of the licenses on file in 3 states.
Which states has Dr. Roger Hiro Kobayashi been licensed in?
Dmand AI has state licenses on file for Dr. Kobayashi in Nebraska (1980 to 2024), California (since 1977) and Iowa (1990 to 2023).
Which hospitals is Dr. Roger Hiro Kobayashi affiliated with?
Dr. Kobayashi practices at York General Hospital in York, Nebraska.
Does Dr. Roger Hiro Kobayashi accept Medicare?
Yes. CMS data shows Dr. Kobayashi billed Medicare for 2,428 services in 2021.
Is Dr. Roger Hiro Kobayashi board certified?
Yes. Dr. Kobayashi is board certified in allergy & immunology by the American Board of Allergy and Immunology.
What services does Dr. Roger Hiro Kobayashi bill to Medicare?
In 2021, Dr. Kobayashi's most billed Medicare services were injected or infused drug (J2357), office visit, established patient (99213) and allergy test or treatment (95117).
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Where did Dr. Roger Hiro Kobayashi go to medical school?
Dr. Kobayashi graduated from UNMC in 1975.
What drugs does Dr. Roger Hiro Kobayashi prescribe most?
In 2022 Medicare Part D data, Dr. Kobayashi's most prescribed drugs by claims were Montelukast Sodium, Fluticasone Propionate and Breo Ellipta.
Has Dr. Roger Hiro Kobayashi received payments from drug or device companies?
CMS Open Payments shows $100,120 in general payments to Dr. Kobayashi from 26 companies from 2016 to 2024. The largest total came from Octapharma USA, Inc.
How long has Dr. Roger Hiro Kobayashi been practicing?
Dr. Kobayashi graduated from medical school in 1975, 51 years ago.
Does Dr. Roger Hiro Kobayashi do research?
Dmand AI links 34 publications to Dr. Kobayashi, published from 2016 to 2024. Dr. Kobayashi has worked on 4 clinical trials.
Who does Dr. Roger Hiro Kobayashi publish with?
Dr. Kobayashi's most frequent co-authors are Sudhir Gupta, MD (8 shared papers), Hans D. Ochs (4 shared papers) and Thomas P. Atkinson, MD (3 shared papers).
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