Maria Slack, M.D.
NPI 1831325661 · Allergy & Immunology Physician · Findlay, OH
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Slack, M.D. is a Allergy & Immunology Physician provider in Findlay, OH (NPI 1831325661).
Provider details
- NPI number
- 1831325661
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 35.099962 (OH)
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
5,942 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 | 3,298 | $3 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 1,582 | $13 |
| Professional Service for Multiple Injections of Allergen95117 | 429 | $11 |
| Test for Allergy Using Allergenic Extract Injected Into Skin95024 | 238 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 102 | $121 |
| Professional Service for Single Injection of Allergen95115 | 75 | $9 |
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 |
|---|---|---|
| Montelukast Sodium | 120 | 41 |
| Azelastine Hcl | 64 | 31 |
| Omalizumabbrand: Xolair | 45 | — |
| Flunisolide | 41 | 21 |
| Fluticasone Propionate | 41 | 12 |
| Famotidine | 33 | — |
| Ipratropium Bromide | 28 | 12 |
| C1 Esterase Inhibitorbrand: Haegarda |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$203 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
- 2009-06-08
- Last updated
- 2024-04-03
- Certified
- 2024-04-03
Frequently asked questions
- What is Maria Slack's NPI number?
- Maria Slack's National Provider Identifier (NPI) is 1831325661, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Slack's specialty?
- Maria Slack is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Slack located?
- Maria Slack's practice location on file with NPPES is 1816 Chapel Dr Ste G, Findlay, OH 45840-1343.
- What is Maria Slack's phone number?
- The practice phone number listed in the NPPES registry for Maria Slack is (419) 423-5470.
- Does Maria Slack accept Medicare?
- Maria Slack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Slack's NPI active?
- Yes — Maria Slack's NPI (1831325661) is active in the NPPES registry as of the last update on 2024-04-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.