Tania Diaz
NPI 1366070955 · Physician Assistant · Crystal Lake, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tania Diaz is a Physician Assistant provider in Crystal Lake, IL (NPI 1366070955).
Provider details
- NPI number
- 1366070955
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 42 | 17 |
| Atorvastatin Calcium | 39 | 19 |
| Omeprazole | 28 | — |
| Metformin Hcl | 27 | 13 |
| Lisinopril | 25 | 11 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 22 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$821 across 46 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
Additional practice locations (1)
- 1340 Ryan PkwyAlgonquin, IL 60102-4527Phone: (815) 276-0150Fax: (877) 461-6742
Registry dates
- Enumerated
- 2020-03-30
- Last updated
- 2025-10-10
- Certified
- 2025-10-10
Frequently asked questions
- What is Tania Diaz's NPI number?
- Tania Diaz's National Provider Identifier (NPI) is 1366070955, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tania Diaz's specialty?
- Tania Diaz is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tania Diaz located?
- Tania Diaz's practice location on file with NPPES is 241 Commerce Dr Ste 102, Crystal Lake, IL 60014-3538.
- What is Tania Diaz's phone number?
- The practice phone number listed in the NPPES registry for Tania Diaz is (815) 524-2200.
- Does Tania Diaz accept Medicare?
- Tania Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tania Diaz's NPI active?
- Yes — Tania Diaz's NPI (1366070955) is active in the NPPES registry as of the last update on 2025-10-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.