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Dr. John L Genier, M.D.

Internal Medicine Physician in Fairport, NY · enumerated 2006 · practices at Cross Keys Internal Medicine,LLP.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1811931900

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Registry record

Entity type Individual (Type 1)
Name Dr. John L Genier
Credential M.D.
Sex Male
Practice address 420 Cross Keys Office Park, Fairport, NY, 14450
Phone (585) 223-4620
Fax (585) 223-7447
Enumeration date Jun 16, 2006
Last updated in NPPES Aug 28, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 182532 (NY) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
P010182532 Other NY EXCELLUS
MDF336 Other NY PREFERRED CARE
01398865 Medicaid NY -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for John Genier?
The National Provider Identifier (NPI) for John Genier is 1811931900, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Genier practice?
The practice location on file with NPPES is in Fairport, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-28.