NPPES file of Aug 9, 2026

Derek Libby, CADC, MHRTC

Addiction (Substance Use Disorder) Counselor · Chelsea, ME

Derek Libby, CADC, MHRTC is an addiction (substance use disorder) counselor with a practice address in Chelsea, Maine, and NPI 1912685975, issued on Jul 10, 2023. Check the license (Maine CAC8536, as entered in NPPES) with the Maine 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
1912685975
Name
Derek Libby
Credential
CADC, MHRTC
Primary taxonomy
Addiction (Substance Use Disorder) Counselor 101YA0400X
License number
CAC8536 ME
Self-reported in NPPES; status is on the state search
Practice location
21 Partridge PL, Chelsea, ME 04330
Phone
(603) 204-4919
Enumerated
Jul 10, 2023
Record last updated
Jul 10, 2023
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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Verify Derek Libby in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maine board licenses this profession
    Search for license CAC8536    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
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1 addiction (substance use disorder) counselor records list a practice address in Chelsea

They are 1 of the 25 NPPES records with a practice address in Chelsea, and 855 addiction (substance use disorder) counselor records in Maine. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 855 in Maine → Every provider in Chelsea →

Other addiction (substance use disorder) counselor records in Maine

  1. Nancy Abel, MSW LCSW LADCPortland, ME1073728762
  2. Chet Adams, LADC, CCSWestbrook, ME1033406418
  3. Shelly Adams, CADCBangor, ME1932640448
  4. Samantha Ahearn, CADCBangor, ME1184208852
  5. Hope AkersWaterville, ME1346913548
  6. Richard Allard, ADCABangor, ME1700508058
  7. Mark Allen, LSW, LADC, CCSLewiston, ME1790671550
  8. Ronda AndersonBangor, ME1104267954
  9. Alicia Antiuk, LADC, MHRT/CMedway, ME1972371060
  10. Jason Antkies, LADCLewiston, ME1588901706

Common questions

What is Derek Libby, CADC, MHRTC's NPI number?

Derek Libby, CADC, MHRTC's National Provider Identifier (NPI) is 1912685975, issued on Jul 10, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Derek Libby, CADC, MHRTC located?

The NPPES record lists a practice address at 21 Partridge PL, Chelsea, ME, 04330. Phone: (603) 204-4919. Providers update this record themselves, so call before visiting.

How can I verify Derek Libby, CADC, MHRTC's license?

NPPES lists Maine license number CAC8536, as entered by the provider. Search the Maine 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.