Catherine Zillmann, NPP
Psychiatric/Mental Health Nurse Practitioner · Smithtown, NY
Catherine Zillmann, NPP is a psychiatric/mental health nurse practitioner with a practice address in Smithtown, New York, and NPI 1326052333, issued on Jul 27, 2006. Check the license (New York F400964-1, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Catherine Zillmann
- Credential
- NPP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- F400964-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 363 Route 111 Ste 103, Smithtown, NY 11787
- Phone
- (631) 864-9202
- Enumerated
- Jul 27, 2006
- Record last updated
- Feb 14, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (631) 265-3205
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 4,129 in New York → Look up another NPI →
Also registered at 363 Route 111 Ste 103
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jaclyn Levine, LCSW-RClinical Social Worker1457744328
- Debbie Mihalko, LCSWClinical Social Worker1073188058
- Cara Stamm, MA, MHC-LPMental Health Counselor1508553355
- Karen Tukman, LCSWClinical Social Worker1447339635
- Jessica Wood, RN, PNPPediatric Nurse Practitioner1588986954
Verify Catherine Zillmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license F400964-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
156 Medicare Part D claims for 16 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.
Most prescribed
- Dextroamphetamine-Amphetamine35 claims
- Clonazepam15 claims
- Citalopram Hbr14 claims
- Dextroamphetamine-Amphet Er13 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.
Catherine Zillmann among 4,129 psychiatric/mental health nurse practitioner records in New York
Catherine Zillmann, NPP is one of 4,129 psychiatric/mental health nurse practitioner records with a practice address in New York. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 92% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 46% of these records are
- Record last updated2018 · 34% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 psychiatric/mental health nurse practitioner records list a practice address in Smithtown
They are 22 of the 1,907 NPPES records with a practice address in Smithtown, and 4,129 psychiatric/mental health nurse practitioner records in New York.
All 4,129 in New York → Every provider in Smithtown → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Timothy Aiello, NPPSmithtown, NY 117871851815716
- Bernadette Barron, N.P.Smithtown, NY 117871679871032
- Diane Boaro, APRN, MS, PMHNP-BCSmithtown, NY 117871427175348
- Tracey Brown, NPPSmithtown, NY 117871649436957
- Eileen Levy, NPPSmithtown, NY 117871710024211
- Denise Lundquist, NPSmithtown, NY 117871285187302
- Perrine Nixon, NPSmithtown, NY 117871922112028
- Catherine O'Brien, NPP., APRNSmithtown, NY 117871578513107
Common questions
What is Catherine Zillmann, NPP's NPI number?
Catherine Zillmann, NPP's National Provider Identifier (NPI) is 1326052333, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Zillmann, NPP located?
The NPPES record lists a practice address at 363 Route 111 Ste 103, Smithtown, NY, 11787. Phone: (631) 864-9202. Providers update this record themselves, so call before visiting.
How can I verify Catherine Zillmann, NPP's license?
NPPES lists New York license number F400964-1, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Catherine Zillmann, NPP prescribe under Medicare Part D?
In 2024, Catherine Zillmann, NPP had 156 Medicare Part D claims for 16 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.