Erinn Ayres, MD
NPI 1942435292 · Internal Medicine Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erinn Ayres, MD is a Internal Medicine Physician provider in Tucson, AZ (NPI 1942435292).
Provider details
- NPI number
- 1942435292
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 67364 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
5,290 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 622 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 553 | $124 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 422 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 398 | $13 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 384 | $8 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 378 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 143 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 562 | 171 |
| Levothyroxine Sodium | 507 | 151 |
| Rosuvastatin Calcium | 454 | 157 |
| Amlodipine Besylate | 426 | 142 |
| Lisinopril | 310 | 98 |
| Losartan Potassium | 266 | 91 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-05-15
- Last updated
- 2026-03-13
- Certified
- 2026-03-13
Frequently asked questions
- What is Erinn Ayres's NPI number?
- Erinn Ayres's National Provider Identifier (NPI) is 1942435292, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erinn Ayres's specialty?
- Erinn Ayres is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Erinn Ayres located?
- Erinn Ayres's practice location on file with NPPES is 6130 N La Cholla Blvd Ste 100, Tucson, AZ 85741-3589.
- What is Erinn Ayres's phone number?
- The practice phone number listed in the NPPES registry for Erinn Ayres is (520) 742-4159.
- Does Erinn Ayres accept Medicare?
- Erinn Ayres is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erinn Ayres's NPI active?
- Yes — Erinn Ayres's NPI (1942435292) is active in the NPPES registry as of the last update on 2026-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.