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John Demais, MD
NPI 1558320564 · Anesthesiology Physician · Millburn, NJ
John Demais, MD is a Anesthesiology Physician provider in Millburn, NJ (NPI 1558320564).
Provider details
- NPI number
- 1558320564
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA40996 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
187 Millburn Avenue
Millburn, NJ 07041
Phone: (973) 467-1466
Fax: (973) 467-1422
Street-level locationGet directions
Mailing address
187 Millburn Ave
Millburn, NJ 07041-1847
Registry dates
- Enumerated
- 2006-03-20
- Last updated
- 2009-12-11
Frequently asked questions
- What is John Demais's NPI number?
- John Demais's National Provider Identifier (NPI) is 1558320564, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Demais's specialty?
- John Demais is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Demais located?
- John Demais's practice location on file with NPPES is 187 Millburn Avenue, Millburn, NJ 07041.
- What is John Demais's phone number?
- The practice phone number listed in the NPPES registry for John Demais is (973) 467-1466.
- Is John Demais's NPI active?
- Yes — John Demais's NPI (1558320564) is active in the NPPES registry as of the last update on 2009-12-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.