Arley Diaz, MD
NPI 1093706525 · Nephrology Physician · West Springfield, MA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Arley Diaz, MD is a Nephrology Physician provider in West Springfield, MA (NPI 1093706525).
Provider details
- NPI number
- 1093706525
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 042575 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
3,246 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 849 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 750 | $103 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 591 | $78 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 248 | $371 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 164 | $171 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 256 | 64 |
| Lisinopril | 197 | 57 |
| Doxazosin Mesylate | 169 | 48 |
| Empagliflozinbrand: Jardiance | 142 | 35 |
| Losartan Potassium | 127 | 36 |
| Allopurinol | 111 | 33 |
| Amlodipine Besylate | 103 | 36 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-03
- Last updated
- 2022-01-11
- Certified
- 2022-01-11
Frequently asked questions
- What is Arley Diaz's NPI number?
- Arley Diaz's National Provider Identifier (NPI) is 1093706525, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arley Diaz's specialty?
- Arley Diaz is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Arley Diaz located?
- Arley Diaz's practice location on file with NPPES is 134 Capital Dr Ste E, West Springfield, MA 01089-1320.
- What is Arley Diaz's phone number?
- The practice phone number listed in the NPPES registry for Arley Diaz is (413) 733-0010.
- Does Arley Diaz accept Medicare?
- Arley Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Arley Diaz's NPI active?
- Yes — Arley Diaz's NPI (1093706525) is active in the NPPES registry as of the last update on 2022-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.