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Dr. John R Demais, MD

Anesthesiology Physician in Millburn, NJ · enumerated 2006 · practices at Atlas Rehabilitation & Pain Medicine, LLC.

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

National Provider Identifier

1558320564

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Registry record

Entity type Individual (Type 1)
Name Dr. John R Demais
Credential MD
Sex Male
Practice address 187 Millburn Avenue, Millburn, NJ, 07041
Phone (973) 467-1466
Fax (973) 467-1422
Enumeration date Mar 20, 2006
Last updated in NPPES Dec 11, 2009

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 25MA40996 (NJ) 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
183231 Medicaid NJ -

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 Demais?
The National Provider Identifier (NPI) for John Demais is 1558320564, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Demais practice?
The practice location on file with NPPES is in Millburn, NJ. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-11.