Constantine Chaknos, MD
NPI 1588870901 · Nephrology Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Constantine Chaknos, MD is a Nephrology Physician provider in Philadelphia, PA (NPI 1588870901).
Provider details
- NPI number
- 1588870901
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 228780 (MA)
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
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
999 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 | 348 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 308 | $85 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 95 | $366 |
| 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 | 72 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 62 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 150 | 52 |
| Calcitriol | 116 | 34 |
| Potassium Citratebrand: Potassium Citrate Er | 98 | 31 |
| Losartan Potassium | 92 | 30 |
| Chlorthalidone | 80 | 26 |
| Lisinopril | 62 | 19 |
| 0.9 % Sodium Chloridebrand: Sodium Chloride | 59 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-15
- Last updated
- 2019-08-22
Frequently asked questions
- What is Constantine Chaknos's NPI number?
- Constantine Chaknos's National Provider Identifier (NPI) is 1588870901, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Constantine Chaknos's specialty?
- Constantine Chaknos is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Constantine Chaknos located?
- Constantine Chaknos's practice location on file with NPPES is 3400 Civic Center Blvd., Philadelphia, PA 19104-2617.
- What is Constantine Chaknos's phone number?
- The practice phone number listed in the NPPES registry for Constantine Chaknos is (215) 662-2638.
- Does Constantine Chaknos accept Medicare?
- Constantine Chaknos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Constantine Chaknos's NPI active?
- Yes — Constantine Chaknos's NPI (1588870901) is active in the NPPES registry as of the last update on 2019-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.