NPPES file of Aug 9, 2026

Eileen Kollmer Mills

Mental Health Counselor · Acton, MA

Eileen Kollmer Mills is a mental health counselor with a practice address in Acton, Massachusetts, and NPI 1336520477, issued on Jun 15, 2015. Check the license with the Massachusetts 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
1336520477
Name
Eileen Kollmer Mills
Primary taxonomy
Mental Health Counselor 101YM0800X
Practice location
360 Massachusetts Ave, Acton, MA 01720
Phone
(978) 263-3427
Enumerated
Jun 15, 2015
Record last updated
Jun 15, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20250527000353); accepts Medicare assignment
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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Also registered at 360 Massachusetts Ave

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

  1. Chelsea BalzerMental Health Counselor1568981140
  2. Michael Bodem, B.A.Clinical Social Worker1376971374
  3. Cromwell BrowneCounselor1811350580
  4. Elaini DaigleCounselor1093187452
  5. Josette DeceusCounselor1912313073
  6. Samantha DolatCounselor1730421595

Verify Eileen Kollmer Mills 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
Find the Massachusetts license search

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Bills Medicare through one group practice

  1. Justice Resource Institute, IncSalem, MA

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

Eileen Kollmer Mills among 18,415 mental health counselor records in Massachusetts

Eileen Kollmer Mills is one of 18,415 mental health counselor records with a practice address in Massachusetts. 7% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 44% of them.

  • NPI issued2015 · 44% of these records are older, 52% newer
  • In a Medicare fileYes · 7% of these records are
  • In the CMS Doctors and Clinicians fileYes · 10% of these records are
  • Graduated2016 · median 2014 among the 1,811 with a school on file
  • Record last updated2015 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

73 mental health counselor records list a practice address in Acton

They are 73 of the 556 NPPES records with a practice address in Acton, and 18,415 mental health counselor records in Massachusetts.

The 8 mental health counselor records with the nearest ZIP codes

  1. Veneita Burden, MED LMHCActon, MA 017201124106505
  2. Linda Collins, LMHCActon, MA 017201801947551
  3. Jill Defoe, LICSWActon, MA 017201265532360
  4. Benjamin Gildehaus, M.A.Acton, MA 017201144508268
  5. Lynn Giles, LMHCActon, MA 017201083788897
  6. Enid Keefe, LMHCActon, MA 017201669606752
  7. Caroline Leggett, LICSWActon, MA 017201982700209
  8. Heather Leonardo, M.S.Acton, MA 017201760652333

Common questions

What is Eileen Kollmer Mills's NPI number?

Eileen Kollmer Mills's National Provider Identifier (NPI) is 1336520477, issued on Jun 15, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Eileen Kollmer Mills located?

The NPPES record lists a practice address at 360 Massachusetts Ave, Acton, MA, 01720. Phone: (978) 263-3427. Providers update this record themselves, so call before visiting.

How can I verify Eileen Kollmer Mills'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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

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.