John Giangreco, FNP
NPI 1457841892 · Family Nurse Practitioner · Brooklyn, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Giangreco, FNP is a Family Nurse Practitioner provider in Brooklyn, NY (NPI 1457841892).
Provider details
- NPI number
- 1457841892
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Male
- Sole proprietor
- Yes
- License
- 342717 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 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
1,403 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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 852 | $120 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 211 | $52 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 144 | $72 |
| Administration of Influenza Virus VaccineG0008 | 63 | $37 |
| Transitional Care Management Services for Problem of High Complexity99496 | 50 | $271 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 42 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 137 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 553 | 101 |
| Amlodipine Besylate | 468 | 88 |
| Gabapentin | 304 | 62 |
| Metoprolol Succinate | 244 | 44 |
| Levothyroxine Sodium | 234 | 41 |
| Tamsulosin Hcl | 227 | 40 |
| Furosemide | 226 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$57 across 2 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
- 2018-05-11
- Last updated
- 2018-06-16
Frequently asked questions
- What is John Giangreco's NPI number?
- John Giangreco's National Provider Identifier (NPI) is 1457841892, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Giangreco's specialty?
- John Giangreco is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Giangreco located?
- John Giangreco's practice location on file with NPPES is 2381 Ocean Ave Apt 1b, Brooklyn, NY 11229-3546.
- What is John Giangreco's phone number?
- The practice phone number listed in the NPPES registry for John Giangreco is (917) 538-4717.
- Does John Giangreco accept Medicare?
- John Giangreco is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Giangreco's NPI active?
- Yes — John Giangreco's NPI (1457841892) is active in the NPPES registry as of the last update on 2018-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.