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

William Jacob Wallach

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1720668551

William Jacob Wallach is a Hospitalist in Brooklyn, New York. Qualified in 2022, 4 years ago. Practices with Kings Physician Services PC, a 645-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
4
Licensed in
NY
In the registry since
2021
Specialties on file
2
Claim this listing Report a problem Suggest an edit

Practice location Address checks out

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

Brooklyn, NY

No coordinates on file. Search this address in Google Maps

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 337791 (NY)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1720668551
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 14, 2021
Last updated in NPPESAugust 20, 2025
Certification dateAugust 20, 2025

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 2022 (4 years in practice)
Group practice Kings Physician Services Pc — 645 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Brooklyn