Julian Ambrus, MD
Allergy & Immunology (Internal Medicine) Physician · Williamsville, NY
Julian Ambrus, MD is an allergy & immunology (internal medicine) physician with a practice address in Williamsville, New York, and NPI 1811919988, issued on Jul 24, 2006. Check the license (New York 144925, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Julian Ambrus
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology (Internal Medicine) Physician 207RA0201X
- License number
- 144925 NY
Self-reported in NPPES; status is on the state search - Practice location
- 400 International Dr, Williamsville, NY 14221
- Phone
- (716) 631-3555
- Enumerated
- Jul 24, 2006
- Record last updated
- Apr 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (716) 631-9525
- Medicaid ID
- 01679881 NY
- Medicare enrollment
- Enrolled (PECOS I20070329000307); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1979
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology (internal medicine) physician records → All 61 in New York → Look up another NPI →
Also registered at 400 International Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sara AdermanMassage Therapist1417233065
- Mark Anderson, PTPhysical Therapist1477700466
- Jessica Bennett, MS, RDRegistered Dietitian1548718646
- Gina Boldt, L.M.TMassage Therapist1942598107
- Nora BrowningFamily Nurse Practitioner1760370118
- Teresa CampbellMassage Therapist1326357492
Verify Julian Ambrus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 144925Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.8 times the Medicare Part D claims of the average allergy & immunology (internal medicine) physician in 2024
5,386 Medicare Part D claims for 391 beneficiaries, against an average of 789 among the 429 providers of this specialty who prescribed in Part D. 59 claims were for opioids.
Most prescribed
- Levocarnitine657 claims
- Hydroxychloroquine Sulfate285 claims
- Azelastine Hcl202 claims
- Cevimeline Hcl177 claims
- Folic Acid171 claims
- Verapamil Hcl163 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 77.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,809.28
90 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 321 providers of this specialty with any payment received $7,456.30 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
- Brain And Spine Medical Services PLLCWilliamsville, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Julian Ambrus among 61 allergy & immunology (internal medicine) physician records in New York
Julian Ambrus, MD is one of 61 allergy & immunology (internal medicine) physician records with a practice address in New York. 84% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 48% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1979 · median 1999 among the 38 with a school on file
- Record last updated2020 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0201X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology (Internal Medicine) Physician providers in New York
There are 61 allergy & immunology (internal medicine) physician records in New York.
All 61 in New York → Every provider in Williamsville → Allergy & Immunology (Internal Medicine) Physician nationwide →
The 8 allergy & immunology (internal medicine) physician records with the nearest ZIP codes
- Sean Brady, MDWilliamsville, NY 142211356583124
- Aasha Harish, MD, MPHWilliamsville, NY 142211922368737
- Stanley Schwartz, MDBuffalo, NY 142031720188063
- Eduardo Arreaza, M.D.Rochester, NY 146071770541880
- Douglas Jones, M.D.Rochester, NY 146071063461432
- Mahta Mortezavi, MDRochester, NY 146071093013781
- Denise Sanchez Tejera, M.D.Rochester, NY 146071437500105
- Luanna Yang, M.D.Rochester, NY 146251053731414
Common questions
What is Julian Ambrus, MD's NPI number?
Julian Ambrus, MD's National Provider Identifier (NPI) is 1811919988, issued on Jul 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Julian Ambrus, MD located?
The NPPES record lists a practice address at 400 International Dr, Williamsville, NY, 14221. Phone: (716) 631-3555. Providers update this record themselves, so call before visiting.
How can I verify Julian Ambrus, MD's license?
NPPES lists New York license number 144925, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Julian Ambrus, MD prescribe under Medicare Part D?
In 2024, Julian Ambrus, MD had 5,386 Medicare Part D claims for 391 beneficiaries; the average among allergy & immunology (internal medicine) physician prescribers was 789. Part D covers Medicare prescriptions only.
What is Julian Ambrus, MD's MIPS final score?
The 2023 MIPS final score is 77.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.