Christos Kallis, MB.BS
NPI 1649684572 · Nephrology Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christos Kallis, MB.BS is a Nephrology Physician provider in Philadelphia, PA (NPI 1649684572).
Provider details
- NPI number
- 1649684572
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MB.BS
- Sex
- Male
- Sole proprietor
- No
- License
- MD466611 (PA)
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
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
353 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 | 168 | $83 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 80 | $103 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 52 | $138 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 32 | $121 |
| Hemodialysis Procedure With Physician Evaluation90935 | 21 | $75 |
Typical Medicare-allowed amounts for these services range $75–$138 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Nifedipinebrand: Nifedipine Er | 88 | 17 |
| Losartan Potassium | 37 | — |
| Carvedilol | 31 | — |
| Furosemide | 30 | — |
| Valganciclovir Hcl | 26 | — |
| Cinacalcet Hcl | 23 | — |
| Tamsulosin Hcl | 20 | — |
| Sodium Zirconium Cyclosilicate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$615 across 28 records (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
Additional practice locations (1)
- 3400 Spruce StPhiladelphia, PA 19104-4238Phone: (215) 615-1677Fax: (215) 615-1688
Registry dates
- Enumerated
- 2014-06-18
- Last updated
- 2022-07-21
- Certified
- 2022-06-09
Frequently asked questions
- What is Christos Kallis's NPI number?
- Christos Kallis's National Provider Identifier (NPI) is 1649684572, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christos Kallis's specialty?
- Christos Kallis is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Christos Kallis located?
- Christos Kallis's practice location on file with NPPES is 5501 Old York Rd, Philadelphia, PA 19141-3018.
- What is Christos Kallis's phone number?
- The practice phone number listed in the NPPES registry for Christos Kallis is (800) 220-2362.
- Does Christos Kallis accept Medicare?
- Christos Kallis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christos Kallis's NPI active?
- Yes — Christos Kallis's NPI (1649684572) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.