Kenneth Greiff, LCSW
Clinical Social Worker · Philadelphia, PA
Kenneth Greiff, LCSW is a clinical social worker with a practice address in Philadelphia, Pennsylvania, and NPI 1033367297, issued on Aug 29, 2008. Check the license (Pennsylvania 15122138, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kenneth Greiff
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 15122138 PA
Self-reported in NPPES; status is on the state search - Practice location
- 2400 Chestnut St., Philadelphia, PA 19103
- Phone
- (215) 568-5903
- Enumerated
- Aug 29, 2008
- Record last updated
- Jun 5, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090414000139); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 7,830 in Pennsylvania → Look up another NPI →
Also registered at 2400 Chestnut St.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anthony Carlino, MDPsychiatry Physician1700011889
Verify Kenneth Greiff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license 15122138Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Harmony Mental Health Services Inc.Philadelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kenneth Greiff among 7,830 clinical social worker records in Pennsylvania
Kenneth Greiff, LCSW is one of 7,830 clinical social worker records with a practice address in Pennsylvania. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 27% of them.
- NPI issued2008 · 27% of these records are older, 70% newer
- In a Medicare fileYes · 16% of these records are
- In the CMS Doctors and Clinicians fileYes · 24% of these records are
- Graduated2004 · median 2007 among the 1,888 with a school on file
- Record last updated2009 · 53% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,427 clinical social worker records list a practice address in Philadelphia
They are 1,427 of the 42,849 NPPES records with a practice address in Philadelphia, and 7,830 clinical social worker records in Pennsylvania.
All 7,830 in Pennsylvania → Every provider in Philadelphia → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Laurie Barron, MSS, LCSWPhiladelphia, PA 191031790765964
- Willaim Coffey, LCSWPhiladelphia, PA 191031104917681
- Diane Frankel, MSSPhiladelphia, PA 191031588768170
- Alison Gerig, L.C.S.W.Philadelphia, PA 191031750352530
- Francis Guarnaccia, MSW - LCSWPhiladelphia, PA 191031164463170
- Laura Hawley, L.AC., LCSWPhila, PA 191031972688422
- Grace Howe, LCSW, BCD, ACSWPhiladelphia, PA 191031174693550
- Helen Huffington, M.S.S.Philadelphia, PA 191031033202965
Common questions
What is Kenneth Greiff, LCSW's NPI number?
Kenneth Greiff, LCSW's National Provider Identifier (NPI) is 1033367297, issued on Aug 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth Greiff, LCSW located?
The NPPES record lists a practice address at 2400 Chestnut St., Philadelphia, PA, 19103. Phone: (215) 568-5903. Providers update this record themselves, so call before visiting.
How can I verify Kenneth Greiff, LCSW's license?
NPPES lists Pennsylvania license number 15122138, as entered by the provider. Search the Pennsylvania 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. 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.