NPPES file of Aug 9, 2026

Juliet Marczak, NP

Adult Health Nurse Practitioner · Buffalo, NY

Juliet Marczak, NP is an adult health nurse practitioner with a practice address in Buffalo, New York, and NPI 1710960836, issued on Nov 22, 2005. Check the license (New York F303857, 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
1710960836
Name
Juliet Marczak
Credential
NP
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License number
F303857 NY
Self-reported in NPPES; status is on the state search
Practice location
Elm And Carlton St, Buffalo, NY 14263
Phone
(716) 845-2300
Enumerated
Nov 22, 2005
Record last updated
May 26, 2022
Fax
(716) 845-4341
Medicaid ID
02565873 NY
Medicare enrollment
Enrolled (PECOS I20040614000758); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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.
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Also registered at Elm And Carlton St

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

  1. Steven Abel, RPHPharmacist1649578113
  2. Anuja AbhyankarMedical Oncology Physician1679181424
  3. Sara Abou Azar, M.D.Surgery Physician1689103541
  4. Tina Agostinelli, PAPhysician Assistant1528621885
  5. Eric Ahn, MDGastroenterology Physician1134528912
  6. Christine Aiduk, NPObstetrics & Gynecology Nurse Practitioner1255314555

Verify Juliet Marczak 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 F303857
    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 New York license search

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2.6 times the Medicare Part D claims of the average adult health nurse practitioner in 2024

3,381 Medicare Part D claims for 307 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 13 claims were for opioids.

  1. Juliet Marczak3,381
  2. Specialty average1,280

Most prescribed

  1. Tamsulosin Hcl317 claims
  2. Atorvastatin Calcium243 claims
  3. Amlodipine Besylate150 claims
  4. Levothyroxine Sodium129 claims
  5. Metoprolol Succinate98 claims
  6. Gemtesa97 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: $52.18

3 payments; by number, the most common kind was food and beverage; the largest payer was Procept BioRobotics Corporation. The 12,291 providers of this specialty with any payment received $946.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Juliet Marczak$52.18
  2. Specialty average$946.40

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

Bills Medicare through one group practice

  1. Erie County Medical Center CorporationBuffalo, NY

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Juliet Marczak among 6,028 adult health nurse practitioner records in New York

Juliet Marczak, NP is one of 6,028 adult health nurse practitioner records with a practice address in New York. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 98% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 44% of these records are
  • Graduated2003 · median 2016 among the 2,678 with a school on file
  • Record last updated2022 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

202 adult health nurse practitioner records list a practice address in Buffalo

They are 202 of the 13,287 NPPES records with a practice address in Buffalo, and 6,028 adult health nurse practitioner records in New York.

The 8 adult health nurse practitioner records with the nearest ZIP codes

  1. Donna Blaird-Wagner, NPBuffalo, NY 142631154304459
  2. Mary Brady, ANP-BCBuffalo, NY 142631164771713
  3. Samantha Esnaola, NPBuffalo, NY 142631922692888
  4. Sandra Fundalinski, NPBuffalo, NY 142631386627511
  5. Joseph Gross, ADULT-GERI N.PBuffalo, NY 142631740664093
  6. Sandra Jacob, NPBuffalo, NY 142631609097914
  7. Amber Koeppel, ANPBuffalo, NY 142631477706406
  8. Kathleen Mogensen, NPBuffalo, NY 142631790768687

Common questions

What is Juliet Marczak, NP's NPI number?

Juliet Marczak, NP's National Provider Identifier (NPI) is 1710960836, issued on Nov 22, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Juliet Marczak, NP located?

The NPPES record lists a practice address at Elm And Carlton St, Buffalo, NY, 14263. Phone: (716) 845-2300. Providers update this record themselves, so call before visiting.

How can I verify Juliet Marczak, NP's license?

NPPES lists New York license number F303857, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.

How much does Juliet Marczak, NP prescribe under Medicare Part D?

In 2024, Juliet Marczak, NP had 3,381 Medicare Part D claims for 307 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. 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.