NPPES file of Aug 9, 2026

Teresa Siejak

Case Manager/Care Coordinator · Bowmansville, NY

Teresa Siejak is a case manager/care coordinator with a practice address in Bowmansville, New York, and NPI 1336543750, issued on Oct 14, 2014. Check the license with the New York 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
1336543750
Name
Teresa Siejak
Primary taxonomy
Case Manager/Care Coordinator 171M00000X
Practice location
5360 Genesee St, Bowmansville, NY 14026
Phone
(716) 895-6700
Enumerated
Oct 14, 2014
Record last updated
Nov 7, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(716) 896-0318
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 5360 Genesee St

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

  1. Amanda BartzSocial Worker1033387543
  2. Alana DepointSchool Counselor1437545696
  3. Nicole DicaraMental Health Counselor1467758250
  4. Megan Dimit, MSEDSchool Counselor1265735617
  5. Stephanie Grella, M.A.School Psychologist1235433095
  6. Michael Guppenberger, M.D.Child & Adolescent Psychiatry Physician1912169681

Verify Teresa Siejak in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York 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
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2 case manager/care coordinator records list a practice address in Bowmansville

They are 2 of the 36 NPPES records with a practice address in Bowmansville, and 8,208 case manager/care coordinator records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2 in Bowmansville → All 8,208 in New York → Every provider in Bowmansville →

Other case manager/care coordinator records in New York

  1. Laura A DejohnRochester, NY1619677085
  2. Noor AanSyosset, NY1083581912
  3. Madeline AbadBronx, NY1730445867
  4. Nno AbaiadzeBrooklyn, NY1558082818
  5. Alina AbakirovaBrooklyn, NY1932098662
  6. Stephanie AballayWest Babylon, NY1962176586
  7. Veronica AbazisCambria Heights, NY1376909952
  8. Awn AbbasCorona, NY1114491701
  9. Alia AbbasiCorona, NY1952703696
  10. Sheri AbbeyBelmont, NY1962285197

Common questions

What is Teresa Siejak's NPI number?

Teresa Siejak's National Provider Identifier (NPI) is 1336543750, issued on Oct 14, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Teresa Siejak located?

The NPPES record lists a practice address at 5360 Genesee St, Bowmansville, NY, 14026. Phone: (716) 895-6700. Providers update this record themselves, so call before visiting.

How can I verify Teresa Siejak's license?

Search the New York 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.