Jennifer Diaz, MD
NPI 1053636431 · Allergy & Immunology Physician · Port Jefferson Station, NY
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jennifer Diaz, MD is a Allergy & Immunology Physician provider in Port Jefferson Station, NY (NPI 1053636431).
Provider details
- NPI number
- 1053636431
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2511881 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
12,516 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 10,096 | $5 |
| Test for Allergy Using Allergenic Extract Injected Into Skin95024 | 1,290 | $10 |
| Professional Service for Multiple Injections of Allergen95117 | 392 | $15 |
| Test for Allergy Using Combination of Methods With Drug Or Biological95018 | 212 | $25 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 163 | $201 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 125 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levocetirizine Dihydrochloride | 424 | 161 |
| Ipratropium Bromide | 376 | 141 |
| Azelastine Hcl | 245 | 86 |
| Fluticasone Propionate | 212 | 83 |
| Montelukast Sodium | 59 | 18 |
| Hydroxyzine Hcl | 50 | 15 |
| Epinephrine | 37 | 35 |
| Mometasone Furoate | 33 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,063 across 90 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-03-29
- Last updated
- 2019-04-02
Frequently asked questions
- What is Jennifer Diaz's NPI number?
- Jennifer Diaz's National Provider Identifier (NPI) is 1053636431, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Diaz's specialty?
- Jennifer Diaz is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Jennifer Diaz located?
- Jennifer Diaz's practice location on file with NPPES is 1500 Route 112, Port Jefferson Station, NY 11776-8054.
- What is Jennifer Diaz's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Diaz is (631) 828-7001.
- Does Jennifer Diaz accept Medicare?
- Jennifer Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jennifer Diaz's NPI active?
- Yes — Jennifer Diaz's NPI (1053636431) is active in the NPPES registry as of the last update on 2019-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.