Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Benjamin Wallbrunn Felder, DO

Individual provider Hospitalist Physician · NPI 1003261041

Dr. Benjamin Wallbrunn Felder, DO is an Internal Medicine in Oceanside, New York. Qualified in 2016, 10 years ago. Practices with Mount Sinai School of Medicine, a 151-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
10
Licensed in
NY
In the registry since
2016
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1 Healthy Way
Oceanside, NY 11572-1551
Phone: (516) 632-3666
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 600 Broadway Ave Nw Apt 307, Grand Rapids, MI 49504-7318 — (520) 440-3152
  • First Avenue At 16th Street, New York, NY 10003 — (212) 844-1808
  • 281 1st Ave, New York, NY 10003-2925 — (212) 844-1808

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 316981 (NY)
Hospitalist Physician Taxonomy 208M00000X · Licence 316981 (NY)

Record details

NPI number1003261041
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedApril 27, 2016
Last updated in NPPESAugust 1, 2023
Certification dateJuly 27, 2023
Mailing address1 Healthy Way, Oceanside, NY 11572-1551

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Mount Sinai School Of Medicine — 151 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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