William Jacobowitz, MSN., R.N., EDD
Mental Health Counselor · Syosset, NY
William Jacobowitz, MSN., R.N., EDD is a mental health counselor with a practice address in Syosset, New York, and NPI 1114216520, issued on Apr 6, 2011. Check the license (New York 339849-1, as entered in NPPES) with the New York board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Jacobowitz
- Credential
- MSN., R.N., EDD
- Primary taxonomy
- Mental Health Counselor 101YM0800X
- License number
- 339849-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 34 Patricia LN, Syosset, NY 11791
- Phone
- (516) 974-3311
- Enumerated
- Apr 6, 2011
- Record last updated
- Oct 19, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest mental health counselor records → All 19,989 in New York → Look up another NPI →
Verify William Jacobowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 339849-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Jacobowitz among 19,989 mental health counselor records in New York
William Jacobowitz, MSN., R.N., EDD is one of 19,989 mental health counselor records with a practice address in New York. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2011, is newer than 16% of them.
- NPI issued2011 · 16% of these records are older, 82% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 11% of these records are
- Record last updated2011 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 mental health counselor records list a practice address in Syosset
They are 15 of the 1,054 NPPES records with a practice address in Syosset, and 19,989 mental health counselor records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 19,989 in New York → Every provider in Syosset → Mental Health Counselor nationwide →
The 8 mental health counselor records with the nearest ZIP codes
- Faye Bottone, LCSW-RSyosset, NY 117911942228069
- Lisa Cohen, LMHCSyosset, NY 117911962738815
- Christina DenoraSyosset, NY 117911912465733
- Christopher GraySyosset, NY 117911376413948
- Lauren Johnson, MS ED., MHC-LPSyosset, NY 117911942061205
- Gary KornSyosset, NY 117911992724363
- Amy Morey, MS,LMHC,BCIA-CSyosset, NY 117911538227871
- Samantha Murphy, LMHCSyosset, NY 117911134991318
Common questions
What is William Jacobowitz, MSN., R.N., EDD's NPI number?
William Jacobowitz, MSN., R.N., EDD's National Provider Identifier (NPI) is 1114216520, issued on Apr 6, 2011. An NPI identifies a provider in billing; it is not a license.
Where is William Jacobowitz, MSN., R.N., EDD located?
The NPPES record lists a practice address at 34 Patricia LN, Syosset, NY, 11791. Phone: (516) 974-3311. Providers update this record themselves, so call before visiting.
How can I verify William Jacobowitz, MSN., R.N., EDD's license?
NPPES lists New York license number 339849-1, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.