Gretchen Winterkorn, LMSW
Social Worker · New York, NY
Gretchen Winterkorn, LMSW is a social worker with a practice address in New York, New York, and NPI 1376821868, issued on Aug 1, 2011. Check the license with the New York board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gretchen Winterkorn
- Credential
- LMSW
- Primary taxonomy
- Social Worker 104100000X
- Practice location
- 121 W 20TH St, New York, NY 10011
- Phone
- (212) 337-9277
- Enumerated
- Aug 1, 2011
- Entity
- Type 1 · individual
Also registered at 121 W 20TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zachary Bregman, MDPulmonary Disease Physician1083778716
- Jennifer Jang, NPAdult Health Nurse Practitioner1841567864
Verify Gretchen Winterkorn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
4,586 social worker records list a New York practice address
They are 4,586 of the 98,468 NPPES records with a New York practice address, and 24,800 social worker records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4,586 in New York → All 24,800 in New York → Every provider in New York →
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- Fadhil AbbasBuffalo, NY1588222418
Common questions
What is Gretchen Winterkorn, LMSW's NPI number?
Gretchen Winterkorn, LMSW's National Provider Identifier (NPI) is 1376821868, issued on Aug 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Gretchen Winterkorn, LMSW located?
The NPPES record lists a practice address at 121 W 20TH St, New York, NY, 10011. Phone: (212) 337-9277. Providers update this record themselves, so call before visiting.
How can I verify Gretchen Winterkorn, LMSW's license?
Search the New York board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.