NPPES file of Aug 9, 2026

Gretchen E. Kretkowski-Rieger, PMHNP

Psychiatric/Mental Health Nurse Practitioner · Wantagh, NY

Gretchen E. Kretkowski-Rieger, PMHNP is a psychiatric/mental health nurse practitioner with a practice address in Wantagh, New York, and NPI 1124633615, issued on Sep 10, 2020. Check the license (New York 403207, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1124633615
Name
Gretchen E. Kretkowski-Rieger
Credential
PMHNP
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
403207 NY
Self-reported in NPPES; status is on the state search
Practice location
1400 Wantagh Ave, Wantagh, NY 11793
Phone
(631) 321-7011
Enumerated
Sep 10, 2020
Record last updated
Sep 10, 2020 (not updated in 6 years: call before relying on the address or phone)
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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Also registered at 1400 Wantagh Ave

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

  1. Denise Berg, LCSWClinical Social Worker1649485525
  2. Elizabeth Corbin, MS, LMHC, NCCMental Health Counselor1033398623
  3. Bonnie Hoffmann, MS, LMHC, NBCCHMental Health Counselor1639247919
  4. Laura Kranenberg, LCSWSocial Worker1053538967
  5. Heather Lonigro, RN, PMHNPPsychiatric/Mental Health Nurse Practitioner1710354394
  6. Valessa MesidorFamily Nurse Practitioner1972276285

Verify Gretchen E. Kretkowski-Rieger in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this profession
    Search for license 403207
    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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78% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

201 Medicare Part D claims for 18 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Gretchen Kretkowski-Rieger201
  2. Specialty average906

Most prescribed

  1. Escitalopram Oxalate32 claims
  2. Lorazepam23 claims
  3. Risperidone18 claims
  4. Duloxetine Hcl17 claims
  5. Alprazolam14 claims
  6. Trazodone Hcl13 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $918.99

37 payments; by number, the most common kind was food and beverage; the largest payer was Axsome Therapeutics, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gretchen Kretkowski-Rieger$918.99
  2. Specialty average$1,027.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

11 psychiatric/mental health nurse practitioner records list a practice address in Wantagh

They are 11 of the 711 NPPES records with a practice address in Wantagh, and 4,129 psychiatric/mental health nurse practitioner records in New York.

Other psychiatric/mental health nurse practitioner records in New York

  1. Lori Aavik, DNPNew York, NY1770398802
  2. Jeanne Abatemarco, N.P.P., M.S., R,NNew York, NY1043754989
  3. Geraldine Abbatiello, PHD, GNP, PMHNPChappaqua, NY1235314352
  4. Romane Abbensetts, PMHNPCommack, NY1437616240
  5. Arias Abbruzzi Davis, DNP-BCNew York, NY1073294377
  6. Nadine Abdellatif, DNP, PMHNPOrchard Park, NY1225613615
  7. Nikesha AbdoolBrooklyn, NY1508358011
  8. Kemi Abdul, PSYCHIATRIC NPBrooklyn, NY1437318755
  9. Bernadette Abeel, NURSE PRACTITIONERAlbany, NY1710657986
  10. Robert Abel, NURSE PRACTITIONERNew York, NY1215184445

Common questions

What is Gretchen E. Kretkowski-Rieger, PMHNP's NPI number?

Gretchen E. Kretkowski-Rieger, PMHNP's National Provider Identifier (NPI) is 1124633615, issued on Sep 10, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Gretchen E. Kretkowski-Rieger, PMHNP located?

The NPPES record lists a practice address at 1400 Wantagh Ave, Wantagh, NY, 11793. Phone: (631) 321-7011. Providers update this record themselves, so call before visiting.

How can I verify Gretchen E. Kretkowski-Rieger, PMHNP's license?

NPPES lists New York license number 403207, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.

How much does Gretchen E. Kretkowski-Rieger, PMHNP prescribe under Medicare Part D?

In 2024, Gretchen E. Kretkowski-Rieger, PMHNP had 201 Medicare Part D claims for 18 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions 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.