Robert Irwin, MD
NPI 1215948039 · Internal Medicine Physician · Oro Valley, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Irwin, MD is a Internal Medicine Physician provider in Oro Valley, AZ (NPI 1215948039).
Provider details
- NPI number
- 1215948039
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 28417 (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
19 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
759 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 | 270 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 184 | $88 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 150 | $124 |
| Automated Urinalysis Test81003 | 47 | $2 |
| Administration of Influenza Virus VaccineG0008 | 25 | $31 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 23 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 77 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 207 | 55 |
| Amlodipine Besylate | 181 | 46 |
| Losartan Potassium | 156 | 42 |
| Levothyroxine Sodium | 122 | 33 |
| Tamsulosin Hcl | 101 | 33 |
| Rosuvastatin Calcium | 89 | 26 |
| Simvastatin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-10
- Last updated
- 2010-11-08
Frequently asked questions
- What is Robert Irwin's NPI number?
- Robert Irwin's National Provider Identifier (NPI) is 1215948039, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Irwin's specialty?
- Robert Irwin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Irwin located?
- Robert Irwin's practice location on file with NPPES is 1834 E Innovation Park Dr, Oro Valley, AZ 85755-1963.
- What is Robert Irwin's phone number?
- The practice phone number listed in the NPPES registry for Robert Irwin is (520) 825-9656.
- Does Robert Irwin accept Medicare?
- Robert Irwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Irwin's NPI active?
- Yes — Robert Irwin's NPI (1215948039) is active in the NPPES registry as of the last update on 2010-11-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.