Dr. Benjamin Wallbrunn Felder, DO
Dr. Benjamin Wallbrunn Felder is a Internal Medicine Physician provider (Internal Medicine) practicing in Oceanside, NY, registered in the NPPES registry with NPI 1003261041 since 2016. The credential DO stands for Doctor of Osteopathic Medicine.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1003261041 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Benjamin Wallbrunn Felder |
| Credential | DO |
| Sex | Male |
| Practice address | Oceanside, NY, 11572 |
| Phone | 5166323666 |
| Enumeration date | 2016-04-27 |
| Last updated in NPPES | 2023-08-01 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208M00000X | Hospitalist Physician | Secondary | 316981 | NY |
| 207R00000X | Internal Medicine Physician | Primary | 316981 | NY |
DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential
Copy-ready billing details
Provider: Benjamin Felder, DO NPI: 1003261041 Taxonomy: 207R00000X (Internal Medicine Physician) Address: Oceanside, NY, 11572
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1720085061 | Dmitry Konsky | Individual | Internal Medicine Physician | Oceanside, NY |
| 1104824606 | Edward Mullen | Individual | Radiation Oncology Physician | Oceanside, NY |
| 1801896998 | South Shore Radiation Oncology Associates P C | Organization | Radiation Oncology Physician | Oceanside, NY |
| 1396733028 | Robert Kramer | Individual | Cardiovascular Disease Physician | Oceanside, NY |
| 1306834080 | Julio Valdivieso | Individual | Neonatal-Perinatal Medicine Physician | Oceanside, NY |
| 1306835533 | Kevin Kay | Individual | Anatomic Pathology & Clinical Pathology Physician | Oceanside, NY |
| 1750370987 | Ahmed Khapra | Individual | Anatomic Pathology & Clinical Pathology Physician | Oceanside, NY |
| 1194714337 | South Nassau Communities Hospital | Organization | Anatomic Pathology & Clinical Pathology Physician | Oceanside, NY |
Verify this record
Cross-check NPI 1003261041 against the authoritative CMS record: view Dr. Benjamin Wallbrunn Felder on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-08-01.