Alejandro Diez, MD
NPI 1669670782 · Nephrology Physician · Columbus, OH
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alejandro Diez, MD is a Nephrology Physician provider in Columbus, OH (NPI 1669670782).
Provider details
- NPI number
- 1669670782
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35.099766 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
443 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 182 | $73 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 114 | $92 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 42 | $160 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 34 | $168 |
| Hemodialysis Procedure With Physician Evaluation90935 | 30 | $67 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 426 | 76 |
| Prednisone | 104 | 28 |
| Tacrolimus | 70 | 20 |
| Mycophenolate Sodiumbrand: Mycophenolic Acid | 60 | 12 |
| Sodium Zirconium Cyclosilicatebrand: Lokelma | 42 | 12 |
| Nifedipinebrand: Nifedipine Er | 41 | 17 |
| Valganciclovir Hcl | 38 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (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
Registry dates
- Enumerated
- 2007-07-10
- Last updated
- 2026-02-26
- Certified
- 2026-02-26
Frequently asked questions
- What is Alejandro Diez's NPI number?
- Alejandro Diez's National Provider Identifier (NPI) is 1669670782, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alejandro Diez's specialty?
- Alejandro Diez is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Alejandro Diez located?
- Alejandro Diez's practice location on file with NPPES is 300 W 10th Ave, Columbus, OH 43210-1280.
- What is Alejandro Diez's phone number?
- The practice phone number listed in the NPPES registry for Alejandro Diez is (614) 293-4837.
- Does Alejandro Diez accept Medicare?
- Alejandro Diez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alejandro Diez's NPI active?
- Yes — Alejandro Diez's NPI (1669670782) is active in the NPPES registry as of the last update on 2026-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.