NPPES file of Aug 9, 2026

Mark Daniel Pfeiffer, LICSW

Clinical Social Worker · Providence, RI

Mark Daniel Pfeiffer, LICSW is a clinical social worker with a practice address in Providence, Rhode Island, and NPI 1447433016, issued on Dec 6, 2007. Check the license (Rhode Island ISW02723, as entered in NPPES) with the Rhode Island board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1447433016
Name
Mark Daniel Pfeiffer
Credential
LICSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
ISW02723 RI
Self-reported in NPPES; status is on the state search
Practice location
355 Prairie Ave, Providence, RI 02905
Phone
(401) 444-0570
Enumerated
Dec 6, 2007
Record last updated
Dec 19, 2023
Fax
(401) 444-0427
Medicare enrollment
Enrolled (PECOS I20170921000878); accepts Medicare assignment
Medical or professional school
Indiana University School Of Medicine, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical social worker records → All 2,438 in Rhode Island → Look up another NPI →

Also registered at 355 Prairie Ave

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

  1. Diana Afonso, PAPhysician Assistant1750690392
  2. Aliia Agliullina, MDPediatrics Physician1063116416
  3. Byron AlexPediatrics Physician1114212404
  4. Myah Audette, NPFamily Nurse Practitioner1841656204
  5. Stephanie Avila, CNM, NP-CAdvanced Practice Midwife1184643363
  6. Ingrid AyalaCounselor1386115095

Verify Mark Daniel Pfeiffer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Rhode Island board licenses this profession
    Search for license ISW02723    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 Rhode Island license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. The Providence Community Health Centers Inc.Providence, RI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark Daniel Pfeiffer among 2,438 clinical social worker records in Rhode Island

Mark Daniel Pfeiffer, LICSW is one of 2,438 clinical social worker records with a practice address in Rhode Island. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 17% of them.

  • NPI issued2007 · 17% of these records are older, 69% newer
  • In a Medicare fileYes · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 24% of these records are
  • Graduated2006 · median 2011 among the 574 with a school on file
  • Record last updated2023 · 50% 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 Rhode Island practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

798 clinical social worker records list a practice address in Providence

They are 798 of the 9,647 NPPES records with a practice address in Providence, and 2,438 clinical social worker records in Rhode Island.

All 2,438 in Rhode Island → Every provider in Providence → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. Jennifer Anzivino, CSWProvidence, RI 029051841229465
  2. William Chase,, LICSWProvidence, RI 029051780660092
  3. Christine Chester, LICSWCranston, RI 029051073544490
  4. Bethany Dawson, LICSWProvidence, RI 029051023047222
  5. Catherine Doktor, LCSWProvidence, RI 029051578517975
  6. Heidi Fanion, LCSWProvidence, RI 029051003843301
  7. Lynn Finocchiaro, LICSWProvidence, RI 029051225068091
  8. Karen Hasenstab, LICSWProvidence, RI 029051700811817

Common questions

What is Mark Daniel Pfeiffer, LICSW's NPI number?

Mark Daniel Pfeiffer, LICSW's National Provider Identifier (NPI) is 1447433016, issued on Dec 6, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mark Daniel Pfeiffer, LICSW located?

The NPPES record lists a practice address at 355 Prairie Ave, Providence, RI, 02905. Phone: (401) 444-0570. Providers update this record themselves, so call before visiting.

How can I verify Mark Daniel Pfeiffer, LICSW's license?

NPPES lists Rhode Island license number ISW02723, as entered by the provider. Search the Rhode Island 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.

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.