NPPES file of Aug 9, 2026

Mark Chatkin, LCSW

Clinical Social Worker · New York, NY

Mark Chatkin, LCSW is a clinical social worker with a practice address in New York, New York, and NPI 1568469807, issued on Jul 1, 2005. Check the license (New York R027769, 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.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1568469807
Name
Mark Chatkin
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
R027769 NY
Self-reported in NPPES; status is on the state search
Practice location
19 W 34TH St, New York, NY 10001
Phone
(914) 523-4619
Enumerated
Jul 1, 2005
Record last updated
Nov 10, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(914) 788-0074
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest clinical social worker records → All 29,293 in New York → Look up another NPI →

Also registered at 19 W 34TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ernest Adams, PHDClinical Psychologist1629297767
  2. Ayda Akbelen, LMHCMental Health Counselor1689100257
  3. Stefanie Allister, PSY.D.Clinical Psychologist1174755755
  4. Jonathan AlpertMental Health Counselor1487705596
  5. Amy AmaraSocial Worker1396114393
  6. Kacy Ames, LCSWClinical Social Worker1669657201

Verify Mark Chatkin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this profession
    Search for license R027769    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the New York license search

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Mark Chatkin among 29,293 clinical social worker records in New York

Mark Chatkin, 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 not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 99% newer
  • In a Medicare fileNo · 8% of these records are
  • In the CMS Doctors and Clinicians fileNo · 17% of these records are
  • Record last updated2014 · 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).

6,908 clinical social worker records list a practice address in New York

They are 6,908 of the 98,468 NPPES records with a practice address in New York, and 29,293 clinical social worker records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 29,293 in New York → Every provider in New York → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. Karen Arthur, MSW LCSWNew York, NY 100011518902519
  2. Peter Baldonado, LCSWNew York, NY 100011922076355
  3. Maryanne Barry, LCSW-RNew York, NY 100011295774743
  4. Eva Brams, LCSWNew York, NY 100011669438859
  5. Carrie Edwards, LMSWNew York, NY 100011053339143
  6. Christina Faletti, LCSWNew York, NY 100011790738334
  7. Robin Kappy, LCSWNew York, NY 100011194701417
  8. Hiroko Makabe, LCSW, CASACNew York, NY 100011578522652

Common questions

What is Mark Chatkin, LCSW's NPI number?

Mark Chatkin, LCSW's National Provider Identifier (NPI) is 1568469807, issued on Jul 1, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Mark Chatkin, LCSW located?

The NPPES record lists a practice address at 19 W 34TH St, New York, NY, 10001. Phone: (914) 523-4619. Providers update this record themselves, so call before visiting.

How can I verify Mark Chatkin, LCSW's license?

NPPES lists New York license number R027769, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.