Jennifer Marie Diaz, MD
Allergy & Immunology Physician · Port Jefferson Station, NY
Jennifer Marie Diaz, MD is an allergy & immunology physician with a practice address in Port Jefferson Station, New York, and NPI 1053636431, issued on Mar 29, 2010. Check the license (New York 251188, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Jennifer Marie Diaz
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License numbers
- 251188 NY
2511881 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Route 112, Port Jefferson Station, NY 11776
- Phone
- (631) 828-7001
- Enumerated
- Mar 29, 2010
- Record last updated
- Apr 2, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (631) 928-0185
- Medicare enrollment
- Enrolled (PECOS I20140718000687); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 2007
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 311 in New York → Look up another NPI →
Also registered at 1500 Route 112
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Zarlasht KhanRheumatology Physician1073939625
- Eleana Kitz, NPFamily Nurse Practitioner1043169311
- Craig Litman, M.D.Otolaryngology Physician1871763508
Verify Jennifer Marie Diaz 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 251188Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average allergy & immunology physician in 2024
1,787 Medicare Part D claims for 429 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Levocetirizine Dihydrochloride424 claims
- Ipratropium Bromide376 claims
- Azelastine Hcl245 claims
- Fluticasone Propionate212 claims
- Montelukast Sodium59 claims
- Hydroxyzine Hcl50 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): 91.3 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: $2,063.06
90 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 2,496 providers of this specialty with any payment received $8,321.81 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
- Ent And Allergy Associates LLPYonkers, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer Marie Diaz among 311 allergy & immunology physician records in New York
Jennifer Marie Diaz, MD is one of 311 allergy & immunology 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 2010, is newer than 73% of them.
- NPI issued2010 · 73% of these records are older, 25% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2007 · median 2000 among the 211 with a school on file
- Record last updated2019 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X 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 Physician providers in New York
There are 311 allergy & immunology physician records in New York.
All 311 in New York → Every provider in Port Jefferson Station → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Joseph Cassouto, MDPort Jefferson Station, NY 117761891032132
- Hamid Hussain, M.D.Port Jefferson, NY 117771114986072
- Paul Lusman, M.D.Port Jefferson, NY 117771962400176
- Patricia Nolan, MDLake Ronkonkoma, NY 117791609818772
- Rachel Bautista, M.D.Hauppauge, NY 117881811917552
- Eugenio Capitle, MDHauppauge, NY 117881568411650
- Diane Cymerman, MDStony Brook, NY 117901912907486
- Joseph Reiss, MDWantagh, NY 117931376526863
Common questions
What is Jennifer Marie Diaz, MD's NPI number?
Jennifer Marie Diaz, MD's National Provider Identifier (NPI) is 1053636431, issued on Mar 29, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Marie Diaz, MD located?
The NPPES record lists a practice address at 1500 Route 112, Port Jefferson Station, NY, 11776. Phone: (631) 828-7001. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Marie Diaz, MD's license?
NPPES lists New York license number 251188, 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 Jennifer Marie Diaz, MD prescribe under Medicare Part D?
In 2024, Jennifer Marie Diaz, MD had 1,787 Medicare Part D claims for 429 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Jennifer Marie Diaz, MD's MIPS final score?
The 2023 MIPS final score is 91.3 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.