Joanna Mackenzie
Marriage & Family Therapist · Old Greenwich, CT
Joanna Mackenzie is a marriage & family therapist with a practice address in Old Greenwich, Connecticut, and NPI 1740950633, issued on Sep 14, 2021. Check the license (Connecticut 2679, as entered in NPPES) with the Connecticut board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Joanna Mackenzie
- Primary taxonomy
- Marriage & Family Therapist 106H00000X
- License number
- 2679 CT
Self-reported in NPPES; status is on the state search - Practice location
- 3 W End Ave, Old Greenwich, CT 06870
- Phone
- (203) 722-5152
- Enumerated
- Sep 14, 2021
- Record last updated
- Sep 14, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 3 W End Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Laura Dermer, LCSWClinical Social Worker1427125293
- Leonard Leven, M.D.Child & Adolescent Psychiatry Physician1821098245
Verify Joanna Mackenzie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 2679Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Marriage & Family Therapist providers in Connecticut
There are 1,984 marriage & family therapist records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,984 in Connecticut → Every provider in Old Greenwich →
Other marriage & family therapist records in Connecticut
- Benedicte Aarestrup, LMFTNew Haven, CT1801442447
- Lejla Abidovic, LMFTAWaterbury, CT1902497191
- Michael Abranowitz, MA LMFTMeriden, CT1477632461
- Gisselle Acevedo, MFTBridgeport, CT1790136307
- Marisol Acevedo-Cruz, LMFTHartford, CT1780887224
- Alessandro AcostaCollinsville, CT1386598985
- Jamie AdametzNew Britain, CT1750824157
- Brenda Adams, MFTMeriden, CT1033538376
- Kim Adams, BAGroton, CT1770109324
- Lisa Adams, LMFTNew Haven, CT1013101856
Common questions
What is Joanna Mackenzie's NPI number?
Joanna Mackenzie's National Provider Identifier (NPI) is 1740950633, issued on Sep 14, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Joanna Mackenzie located?
The NPPES record lists a practice address at 3 W End Ave, Old Greenwich, CT, 06870. Phone: (203) 722-5152. Providers update this record themselves, so call before visiting.
How can I verify Joanna Mackenzie's license?
NPPES lists Connecticut license number 2679, 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. 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.