NPPES file of Aug 9, 2026

Mackenzie Anne Steffen

Medical Physician Assistant · Hamburg, NY

Mackenzie Anne Steffen is a medical physician assistant with a practice address in Hamburg, New York, and NPI 1699605642, issued on May 21, 2026. 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
1699605642
Name
Mackenzie Anne Steffen
Primary taxonomy
Medical Physician Assistant 363AM0700X
Practice location
188 George St, Hamburg, NY 14075
Phone
(716) 449-2269
Enumerated
May 21, 2026
Record last updated
May 21, 2026
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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Verify Mackenzie Anne Steffen 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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Mackenzie Anne Steffen among 3,670 medical physician assistant records in New York

Mackenzie Anne Steffen is one of 3,670 medical physician assistant records with a practice address in New York. 76% 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 2026, is newer than 99% of them.

  • NPI issued2026 · 99% of these records are older, 0% newer
  • In a Medicare fileNo · 76% of these records are
  • In the CMS Doctors and Clinicians fileNo · 49% of these records are
  • Record last updated2026 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Physician Assistant providers in New York

There are 3,670 medical physician assistant records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 medical physician assistant records with the nearest ZIP codes

  1. Emma Conroy, PA-CHamburg, NY 140751538846472
  2. Melissa Juliano, PA-CHamburg, NY 140751295836955
  3. Rikki Korkowicz, PA-CHamburg, NY 140751386288785
  4. Sara Nash, RPA-CHamburg, NY 140751427181452
  5. Amy Story, PHYSICIAN ASSISTANTHamburg, NY 140751619212925
  6. Joseph Besl, PAGrand Island, NY 140721104842764
  7. Todd Thomas, PA-CGowanda, NY 140701194822890
  8. Monica Fellenz, PAIrving, NY 140811043305246

Common questions

What is Mackenzie Anne Steffen's NPI number?

Mackenzie Anne Steffen's National Provider Identifier (NPI) is 1699605642, issued on May 21, 2026. An NPI identifies a provider in billing; it is not a license.

Where is Mackenzie Anne Steffen located?

The NPPES record lists a practice address at 188 George St, Hamburg, NY, 14075. Phone: (716) 449-2269. Providers update this record themselves, so call before visiting.

How can I verify Mackenzie Anne Steffen'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.

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.