Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
WILLIAM JACOB WALLACH
ActiveWILLIAM JACOB WALLACH is a Hospitalist healthcare provider located in BROOKLYN, New York. NPI 1720668551 is currently active in the NPPES registry. Verify at CMS.
Hospitalist · BROOKLYN, NY
Registration Details
- NPI Number
- 1720668551
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Apr 14, 2021 (5.3530423007475 yrs)
- Last Updated
- Aug 20, 2025
- License
-
337791 (NY)
Practice Information
- Address
-
506 6TH STBROOKLYN, NY, 112153609Browse NY providers · Browse ZIP 11215
- Phone
- 6467456369
- Primary Specialty
-
Hospitalist
208M00000X
- Additional Specialty
- Hospitalist
Other Hospitalist Providers in BROOKLYN, NY
| Name | Credential | NPI |
|---|---|---|
| DR. BORIS AVEZBAKIYEV | MD | 1396794921 |
| DR. DOLCINE DALMACY | M.D. | 1184664666 |
| AMARPREET S BAINS | M.D. | 1003937889 |
| DR. KANAV SHARMA | M.D. | 1265635999 |
| DR. KELLY DENNIS LIU | M.D. | 1982896361 |
| SIMA SUHAS PENDHARKAR | MD | 1790945277 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.