Arturo Castro Diaz, MD
NPI 1538621842 · Internal Medicine Physician · Bloomington, IN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Arturo Castro Diaz, MD is a Internal Medicine Physician provider in Bloomington, IN (NPI 1538621842).
Provider details
- NPI number
- 1538621842
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
870 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 600 | $73 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 159 | $106 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 99 | $109 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 12 | $160 |
Typical Medicare-allowed amounts for these services range $73–$160 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 35 | 24 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 21 | 21 |
| Atorvastatin Calcium | 21 | 17 |
| Oxycodone Hcl | 14 | 14 |
| Prednisone | 14 | 13 |
| Cefpodoxime Proxetil | 12 | 12 |
| Apixaban |
Practice location
Mailing address
Additional practice locations (1)
- 81 Highland AveSalem, MA 01970-2768Phone: (978) 741-1200
Registry dates
- Enumerated
- 2019-04-04
- Last updated
- 2022-10-28
- Certified
- 2022-10-28
Frequently asked questions
- What is Arturo Castro Diaz's NPI number?
- Arturo Castro Diaz's National Provider Identifier (NPI) is 1538621842, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arturo Castro Diaz's specialty?
- Arturo Castro Diaz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Arturo Castro Diaz located?
- Arturo Castro Diaz's practice location on file with NPPES is 2651 E Discovery Pkwy, Bloomington, IN 47408-9059.
- What is Arturo Castro Diaz's phone number?
- The practice phone number listed in the NPPES registry for Arturo Castro Diaz is (812) 676-4102.
- Does Arturo Castro Diaz accept Medicare?
- Arturo Castro Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Arturo Castro Diaz's NPI active?
- Yes — Arturo Castro Diaz's NPI (1538621842) is active in the NPPES registry as of the last update on 2022-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.