Quick answers
- Does Richard M. Castellino accept Medicare assignment?
- Medicare's clinician data says Richard M. Castellino may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Richard M. Castellino see?
- In 2024, CMS data shows 145 Original Medicare patients and 2,508 services for Richard M. Castellino. This counts Original Medicare only and measures volume, not quality.
- What is Richard M. Castellino's NPI number?
- 1730809773. 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 Richard M. Castellino, 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 | 145 |
|---|---|
| Services billed to Medicare | 2,508 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)757 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)660 services
- Injection, lidocaine hcl for intravenous infusion, 10 mg (J2001)316 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)247 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)192 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 cholesterol75%
- High blood pressure69%
- Arthritis57%
- Ischemic heart disease39%
- Diabetes28%
- Anxiety21%
Hospitals where Richard M. Castellino works
Medicare's Facility Affiliation Data lists Richard M. Castellino 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.
- North Shore University HospitalManhasset, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330106
Practice locations
Addresses where Richard M. Castellino is enrolled with Medicare (CMS data updated October 2, 2026).
- 369 E Main St, Suite 6East Islip, NY 11730 (631) 968‑8300
Group practices
Medicare enrollment lists Richard M. Castellino as a member of this group (CMS data updated October 2, 2026).
- Saxon Chiropractic and Adult Health NP, PLLC3 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in East Islip
Clinicians with the same Medicare primary specialty in East Islip, NY — not a recommendation.
Other clinicians in Saxon Chiropractic and Adult Health NP, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1730809773 |
| 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