NPPES file of Aug 9, 2026

Marilyn M. Diorio, LADC I

Addiction (Substance Use Disorder) Counselor · Somerville, MA

Marilyn M. Diorio, LADC I is an addiction (substance use disorder) counselor with a practice address in Somerville, Massachusetts, and NPI 1841486701, issued on Sep 24, 2007. Check the license with the Massachusetts 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
1841486701
Name
Marilyn M. Diorio
Credential
LADC I
Primary taxonomy
Addiction (Substance Use Disorder) Counselor 101YA0400X
Practice location
167 Holland St, Somerville, MA 02144
Phone
(617) 629-6668
Enumerated
Sep 24, 2007
Record last updated
Sep 24, 2007 (not updated in 19 years: call before relying on the address or phone)
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 addiction (substance use disorder) counselor records → All 2,375 in Massachusetts → Look up another NPI →

Also registered at 167 Holland St

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

  1. Morgan BernsCase Manager/Care Coordinator1194952226
  2. Omar CabreraCase Manager/Care Coordinator1629206602
  3. Bernadette CartyAddiction (Substance Use Disorder) Counselor1891025821
  4. Chu-Chun ChenStudent in an Organized Health Care Education/Training Program1588813695
  5. Abigail ForshayStudent in an Organized Health Care Education/Training Program1164671269
  6. Julie Godbout, LICSWClinical Social Worker1942497268

Verify Marilyn M. Diorio in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck 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
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Marilyn M. Diorio among 2,375 addiction (substance use disorder) counselor records in Massachusetts

Marilyn M. Diorio, LADC I is one of 2,375 addiction (substance use disorder) counselor records with a practice address in Massachusetts. 2% 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 2007, is newer than 4% of them.

  • NPI issued2007 · 4% of these records are older, 86% newer
  • In a Medicare fileNo · 2% of these records are
  • In the CMS Doctors and Clinicians fileNo · 4% of these records are
  • Record last updated2007 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YA0400X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

27 addiction (substance use disorder) counselor records list a practice address in Somerville

They are 27 of the 1,860 NPPES records with a practice address in Somerville, and 2,375 addiction (substance use disorder) counselor records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,375 in Massachusetts → Every provider in Somerville → Addiction (Substance Use Disorder) Counselor nationwide →

The 8 addiction (substance use disorder) counselor records with the nearest ZIP codes

  1. Laurie Arsenault, RN MS CD CASSomerville, MA 021441740302843
  2. Bernadette CartySomerville, MA 021441891025821
  3. Elizabeth CrawfordSomerville, MA 021441134401169
  4. Thomas Farina, LICSWSomerville, MA 021441770706467
  5. Lawrence Keane, LADC 1 CADACSomerville, MA 021441477858231
  6. Robyn LibsonSomerville, MA 021441649455908
  7. Matthew Mullins, LADCSomerville, MA 021441023302676
  8. Lisa AvenellSomerville, MA 021431518807973

Common questions

What is Marilyn M. Diorio, LADC I's NPI number?

Marilyn M. Diorio, LADC I's National Provider Identifier (NPI) is 1841486701, issued on Sep 24, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Marilyn M. Diorio, LADC I located?

The NPPES record lists a practice address at 167 Holland St, Somerville, MA, 02144. Phone: (617) 629-6668. Providers update this record themselves, so call before visiting.

How can I verify Marilyn M. Diorio, LADC I's license?

Search the Massachusetts 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.