Quick answers
- Does Myrelle B. Castro accept Medicare assignment?
- Yes. Medicare's clinician data says Myrelle B. Castro accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Myrelle B. Castro see?
- In 2024, CMS data shows 400 Original Medicare patients and 795 services for Myrelle B. Castro. This counts Original Medicare only and measures volume, not quality.
- What is Myrelle B. Castro's NPI number?
- 1639216179. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Myrelle B. Castro, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 400 |
|---|---|
| Services billed to Medicare | 795 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)351 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)191 services
- Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)29 services
- Insertion of needle into vein for collection of blood sample (36415)23 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)20 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes53%
- Arthritis46%
- Ischemic heart disease36%
- Osteoporosis28%
Hospitals where Myrelle B. Castro works
Medicare's Facility Affiliation Data lists Myrelle B. Castro at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Garnet Health Medical CenterMiddletown, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330126
- Montefiore St Luke's CornwallNewburgh, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330264
Practice locations
Addresses where Myrelle B. Castro is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 1200 State Route 208Monroe, NY 10950 (845) 783‑6266
- 1200 State Route 208, Suite 15Monroe, NY 10950 (845) 549‑1010
- 1460 State Route 17mChester, NY 10918 (845) 651‑1400
- 1460 State Route 17m, Suite AChester, NY 10918 (845) 469‑4211
- 21 Edward J Lempka Dr, Family PracticeFlorida, NY 10921 (845) 651‑1777
Group practices
Medicare enrollment lists Myrelle B. Castro as a member of this group (CMS data updated October 2, 2026).
- Horizon Medical Group PC75 clinicians in the group
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Other clinicians in Horizon Medical Group PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639216179 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians