JOHN B CONSTANTINE M.D. NPI 1437157765

NPI Information

  • NPI: 1437157765
  • Provider Name: JOHN B CONSTANTINE, M.D.
  • Classification: Ophthalmology - 207W00000X
  • Entity Type: Individual
  • Address: 19 VILLAGE SQ
    CHELMSFORD, MA
    ZIP 01824
  • Phone: (978) 256-5600

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NPI Details

John B Constantine, M.D. is an ophthalmology in Chelmsford, MA. The provider is an ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses. John B Constantine, M.D. NPI is 1437157765. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

The provider's business location address is:

19 VILLAGE SQ
CHELMSFORD, MA
ZIP 01824-712
Phone: (978) 256-5600
Fax: (978) 703-0250

The enumeration date for this NPI number is 7/11/2005 and was last updated on 9/29/2011.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
1174400000XSpecialist71751MASSACHUSETTSNo
2207W00000XOphthalmology71751MASSACHUSETTSYes

Other Identifiers

The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.

No. Other Provider Identifier Other Provider Identifier Type Other Provider Identifier State Other Provider Identifier Issuer
1158296OTHERMASSACHUSETTSPHCS
221879OTHERMASSACHUSETTSFALLON
332774OTHERMASSACHUSETTSJOHN HANCOCK/CHILDERN
4B96966MEDICARE UPIN
515288OTHERMASSACHUSETTSHARVARD PILGRIM HEALTH
6S000303OTHERMASSACHUSETTSCHAMPUS
7P451314OTHERMASSACHUSETTSOXFORD HEALTH
8981909OTHERMASSACHUSETTSNET WORK HEALTH
90800093OTHERMASSACHUSETTSEVER CARE
1021480OTHERMASSACHUSETTSHEALTH SOURCE
11B26214MEDICARE ID-TYPE UNSPECIFIEDMASSACHUSETTSMA MEDICARE
120004859OTHERMASSACHUSETTSNEIGHBORHOOD HEALTH PLAN
13180007OTHERMASSACHUSETTSRAIL ROAD MEDICARE
147494OTHERMASSACHUSETTSDAVIS VISION
15CIGNAOTHERMASSACHUSETTS20516
16B26214OTHERMASSACHUSETTSBC/BS MA
172024535MEDICAIDMASSACHUSETTS

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

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