Thomas Mertz, DO, PHARMD.
NPI 1942495825 · Allergy & Immunology Physician · Pittsburgh, PA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Mertz, DO, PHARMD. is a Allergy & Immunology Physician provider in Pittsburgh, PA (NPI 1942495825).
Provider details
- NPI number
- 1942495825
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO, PHARMD.
- Sex
- Male
- Sole proprietor
- No
- License
- 046528 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,488 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 1,287 | $3 |
| Professional Service for Multiple Injections of Allergen95117 | 897 | $11 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 751 | $13 |
| Test for Allergy Using Allergenic Extract Injected Into Skin95024 | 319 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 140 | $120 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 31 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Montelukast Sodium | 254 | 72 |
| Fluticasone Propionate | 228 | 97 |
| Azelastine Hcl | 204 | 92 |
| Famotidine | 114 | 38 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 81 | 47 |
| Albuterol Sulfatebrand: Ventolin Hfa | 59 | 16 |
| Flunisolide | 51 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-09-13
- Last updated
- 2023-06-05
- Certified
- 2023-06-05
Frequently asked questions
- What is Thomas Mertz's NPI number?
- Thomas Mertz's National Provider Identifier (NPI) is 1942495825, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Mertz's specialty?
- Thomas Mertz is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Mertz located?
- Thomas Mertz's practice location on file with NPPES is 2585 Freeport Rd Ste 210, Pittsburgh, PA 15238-1426.
- What is Thomas Mertz's phone number?
- The practice phone number listed in the NPPES registry for Thomas Mertz is (412) 828-3800.
- Does Thomas Mertz accept Medicare?
- Thomas Mertz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Mertz's NPI active?
- Yes — Thomas Mertz's NPI (1942495825) is active in the NPPES registry as of the last update on 2023-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.