Jennifer Lynn Kollar, M.A.
Addiction (Substance Use Disorder) Counselor · Willimantic, CT
Jennifer Lynn Kollar, M.A. is an addiction (substance use disorder) counselor with a practice address in Willimantic, Connecticut, and NPI 1912226424, issued on May 24, 2010. Check the license (Connecticut 1100, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jennifer Lynn Kollar
- Credential
- M.A.
- Primary taxonomy
- Addiction (Substance Use Disorder) Counselor 101YA0400X
- License number
- 1100 CT
Self-reported in NPPES; status is on the state search - Practice location
- 433 Valley St, Willimantic, CT 06226
- Phone
- (860) 456-7200
- Enumerated
- May 24, 2010
- Record last updated
- Nov 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (860) 456-7202
- Medicare enrollment
- Enrolled (PECOS I20250709001458); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest addiction (substance use disorder) counselor records → All 759 in Connecticut → Look up another NPI →
Also registered at 433 Valley St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raelene AsselinCounselor1891359501
- Tyler BeckwithAddiction (Substance Use Disorder) Counselor1235737065
- Marjorie BetancesMental Health Counselor1356574081
- Tracie CompositorCounselor1679009781
- Brandon DillonMental Health Counselor1639418650
- Kristin DunnCounselor1942762372
Verify Jennifer Lynn Kollar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 1100Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Waterstone Counseling Center LLCMadison, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer Lynn Kollar among 759 addiction (substance use disorder) counselor records in Connecticut
Jennifer Lynn Kollar, M.A. is one of 759 addiction (substance use disorder) counselor records with a practice address in Connecticut. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 29% of them.
- NPI issued2010 · 29% of these records are older, 69% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileYes · 9% of these records are
- Graduated2005 · median 2014 among the 72 with a school on file
- Record last updated2021 · 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 addiction (substance use disorder) counselor records list a practice address in Willimantic
They are 12 of the 487 NPPES records with a practice address in Willimantic, and 759 addiction (substance use disorder) counselor records in Connecticut.
All 759 in Connecticut → Every provider in Willimantic → Addiction (Substance Use Disorder) Counselor nationwide →
The 8 addiction (substance use disorder) counselor records with the nearest ZIP codes
- Vicki Barbero, M.ED.,LADCWillimantic, CT 062261346518347
- Tyler BeckwithWillimantic, CT 062261235737065
- Donald CieslukowskiWillimantic, CT 062261316516255
- Madison DrzewieckiWillimantic, CT 062261609566371
- Sandra GiffordWillimantic, CT 062261700134111
- Dujuan HarrisonWillimantic, CT 062261043909997
- Eleanor Joyce, CAC, LADCWillimantic, CT 062261538914965
- Amanda MimandeWillimantic, CT 062261689199895
Common questions
What is Jennifer Lynn Kollar, M.A.'s NPI number?
Jennifer Lynn Kollar, M.A.'s National Provider Identifier (NPI) is 1912226424, issued on May 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Lynn Kollar, M.A. located?
The NPPES record lists a practice address at 433 Valley St, Willimantic, CT, 06226. Phone: (860) 456-7200. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Lynn Kollar, M.A.'s license?
NPPES lists Connecticut license number 1100, as entered by the provider. Search the Connecticut 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.