Jonathan Castro, MD
NPI 1093709479 · Endocrinology, Diabetes & Metabolism Physician · Cornwall, NY
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Castro, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Cornwall, NY (NPI 1093709479).
Provider details
- NPI number
- 1093709479
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 002190 (NY)
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
20 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
5,341 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 833 | $136 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 666 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 533 | $10 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 410 | $16 |
| Thyroxine (thyroid Chemical), Free84439 | 405 | $9 |
| Hemoglobin A1c Level83036 | 397 | $9 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 73 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 1,321 | 388 |
| Glimepiride | 515 | 178 |
| Metformin Hcl | 497 | 162 |
| Empagliflozinbrand: Jardiance | 463 | 149 |
| Semaglutidebrand: Ozempic | 308 | 76 |
| Metformin Hclbrand: Metformin Hcl Er | 249 | 90 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$247 across 9 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
- 2005-08-31
- Last updated
- 2012-09-27
Frequently asked questions
- What is Jonathan Castro's NPI number?
- Jonathan Castro's National Provider Identifier (NPI) is 1093709479, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Castro's specialty?
- Jonathan Castro is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Castro located?
- Jonathan Castro's practice location on file with NPPES is 2570 Route 9w, Cornwall, NY 12518-1323.
- What is Jonathan Castro's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Castro is (845) 651-1400.
- Does Jonathan Castro accept Medicare?
- Jonathan Castro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Castro's NPI active?
- Yes — Jonathan Castro's NPI (1093709479) is active in the NPPES registry as of the last update on 2012-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.