Tiffany Dy, MD
NPI 1528292174 · Allergy & Immunology (Internal Medicine) Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tiffany Dy, MD is a Allergy & Immunology (Internal Medicine) Physician provider in Saint Louis, MO (NPI 1528292174).
Provider details
- NPI number
- 1528292174
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2014003240 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 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
1,406 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 | 687 | $3 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 275 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 137 | $123 |
| Professional Service for Multiple Injections of Allergen95117 | 81 | $12 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 39 | $86 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 32 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 134 | 48 |
| Montelukast Sodium | 127 | 35 |
| Azelastine Hcl | 102 | 43 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 100 | 30 |
| Dupilumabbrand: Dupixent Syringe | 98 | — |
| Azithromycin | 94 | 21 |
| Ipratropium Bromide | 85 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$145 across 3 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
- 2009-05-12
- Last updated
- 2025-04-17
Frequently asked questions
- What is Tiffany Dy's NPI number?
- Tiffany Dy's National Provider Identifier (NPI) is 1528292174, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tiffany Dy's specialty?
- Tiffany Dy is listed in the NPPES registry with a primary specialty of Allergy & Immunology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Tiffany Dy located?
- Tiffany Dy's practice location on file with NPPES is 5201 Mid America Plz, Saint Louis, MO 63129-0002.
- What is Tiffany Dy's phone number?
- The practice phone number listed in the NPPES registry for Tiffany Dy is (314) 996-8670.
- Does Tiffany Dy accept Medicare?
- Tiffany Dy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tiffany Dy's NPI active?
- Yes — Tiffany Dy's NPI (1528292174) is active in the NPPES registry as of the last update on 2025-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.