Jonathan Grossman, LCSW
Clinical Social Worker · Bay Shore, NY
Jonathan Grossman, LCSW is a clinical social worker with a practice address in Bay Shore, New York, and NPI 1578528667, issued on Apr 20, 2006. Check the license (New York R043922-1, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jonathan Grossman
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- R043922-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1855 Union Blvd, Bay Shore, NY 11706
- Phone
- (631) 580-9364
- Enumerated
- Apr 20, 2006
- Record last updated
- Apr 3, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (631) 580-9365
- Medicaid ID
- 02246913 NY
- Medicare enrollment
- Enrolled (PECOS I20070626000301); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 29,293 in New York → Look up another NPI →
Also registered at 1855 Union Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nancy Ko, RPACPhysician Assistant1710196662
Verify Jonathan Grossman 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 R043922-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 98.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Stony Brook Psychiatric Associates University Faculty Practice CorporStony Brook, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan Grossman among 29,293 clinical social worker records in New York
Jonathan Grossman, LCSW is one of 29,293 clinical social worker records with a practice address in New York. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 83% newer
- In a Medicare fileYes · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Graduated1991 · median 2001 among the 5,004 with a school on file
- Record last updated2012 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
78 clinical social worker records list a practice address in Bay Shore
They are 78 of the 1,931 NPPES records with a practice address in Bay Shore, and 29,293 clinical social worker records in New York.
All 29,293 in New York → Every provider in Bay Shore → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Letitia Brown, LCSWBay Shore, NY 117061356422802
- Kerri Calimano, LMSWBay Shore, NY 117061750443156
- Lianne Conroy, LCSWBay Shore, NY 117061366593683
- Lisa Defeis, LCSWBay Shore, NY 117061396772562
- Patricia Hamill-Zemla, LMSWBay Shore, NY 117061285723346
- Kerry Hanner, LCSWBay Shore, NY 117061215971304
- Katie Holmes, LCSW, PHDBay Shore, NY 117061538214879
- Sandra Rivera, LCSWBay Shore, NY 117061235152042
Common questions
What is Jonathan Grossman, LCSW's NPI number?
Jonathan Grossman, LCSW's National Provider Identifier (NPI) is 1578528667, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Grossman, LCSW located?
The NPPES record lists a practice address at 1855 Union Blvd, Bay Shore, NY, 11706. Phone: (631) 580-9364. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Grossman, LCSW's license?
NPPES lists New York license number R043922-1, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
What is Jonathan Grossman, LCSW's MIPS final score?
The 2023 MIPS final score is 98.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.