John Fontanilla, M.D.
NPI 1669688412 · Nephrology Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Fontanilla, M.D. is a Nephrology Physician provider in Philadelphia, PA (NPI 1669688412).
Provider details
- NPI number
- 1669688412
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MT188798 (PA)
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 tenure25% of score
19 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
721 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 | 291 | $80 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 123 | $366 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 76 | $131 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 54 | $134 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 42 | $175 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 56 | 19 |
| Dapagliflozin Propanediolbrand: Farxiga | 46 | 12 |
| Valsartan | 43 | — |
| Furosemide | 39 | 11 |
| Losartan Potassium | 39 | — |
| Carvedilol | 32 | 11 |
| Lisinopril | 27 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$657 across 18 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
Registry dates
- Enumerated
- 2007-05-15
- Last updated
- 2012-07-27
Frequently asked questions
- What is John Fontanilla's NPI number?
- John Fontanilla's National Provider Identifier (NPI) is 1669688412, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Fontanilla's specialty?
- John Fontanilla is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is John Fontanilla located?
- John Fontanilla's practice location on file with NPPES is 4453 Castor Ave, Philadelphia, PA 19124-3846.
- What is John Fontanilla's phone number?
- The practice phone number listed in the NPPES registry for John Fontanilla is (215) 744-2266.
- Does John Fontanilla accept Medicare?
- John Fontanilla is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Fontanilla's NPI active?
- Yes — John Fontanilla's NPI (1669688412) is active in the NPPES registry as of the last update on 2012-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.