NPPES file of Aug 9, 2026

Eleni Maria Koudanis, APRN

Psychiatric/Mental Health Nurse Practitioner · Waltham, MA

Eleni Maria Koudanis, APRN is a psychiatric/mental health nurse practitioner with a practice address in Waltham, Massachusetts, and NPI 1700661253, issued on Aug 31, 2023. Check the license (Massachusetts RN2383782, as entered in NPPES) 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
1700661253
Name
Eleni Maria Koudanis
Credential
APRN
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
RN2383782 MA
Self-reported in NPPES; status is on the state search
Practice location
564 Main St Suite 100, Waltham, MA 02452
Phone
(833) 287-7223
Enumerated
Aug 31, 2023
Record last updated
Sep 26, 2025
Medicare enrollment
Enrolled (PECOS I20260602002024); may accept 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.
Download card Updates feed

8 nearest psychiatric/mental health nurse practitioner records → All 2,169 in Massachusetts → Look up another NPI →

Verify Eleni Maria Koudanis in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license RN2383782    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
Find the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Eleni Maria Koudanis among 2,169 psychiatric/mental health nurse practitioner records in Massachusetts

Eleni Maria Koudanis, APRN is one of 2,169 psychiatric/mental health nurse practitioner records with a practice address in Massachusetts. 74% 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 2023, is newer than 67% of them.

  • NPI issued2023 · 67% of these records are older, 24% newer
  • In a Medicare fileNo · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2025 · median 2021 among the 1,309 with a school on file
  • Record last updated2025 · 23% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

20 psychiatric/mental health nurse practitioner records list a practice address in Waltham

They are 20 of the 2,111 NPPES records with a practice address in Waltham, and 2,169 psychiatric/mental health nurse practitioner records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,169 in Massachusetts → Every provider in Waltham → Psychiatric/Mental Health Nurse Practitioner nationwide →

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Samuel DavidsonWaltham, MA 024521831885615
  2. Miriam Lopes Nakasi, PMHNPWaltham, MA 024521093492647
  3. Maria Nanyonjo, PMHNP-BCWaltham, MA 024521497644603
  4. Simon Selwyn, CNPWaltham, MA 024521821576935
  5. Alberta Adu, CNPWaltham, MA 024511528722451
  6. Judith Casarella, APRNWaltham, MA 024511528127750
  7. Kathleen Davidson, RNCSWaltham, MA 024531366554149
  8. Rachel Egan, RN, PMHNP-BCWaltham, MA 024531285024448

Common questions

What is Eleni Maria Koudanis, APRN's NPI number?

Eleni Maria Koudanis, APRN's National Provider Identifier (NPI) is 1700661253, issued on Aug 31, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Eleni Maria Koudanis, APRN located?

The NPPES record lists a practice address at 564 Main St Suite 100, Waltham, MA, 02452. Phone: (833) 287-7223. Providers update this record themselves, so call before visiting.

How can I verify Eleni Maria Koudanis, APRN's license?

NPPES lists Massachusetts license number RN2383782, as entered by the provider. 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.