Active NPI
John F Maslar, D.C.
- Chiropractor
- Springfield, MA
National Provider Identifier
1558311381
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Chiropractor
- License
- 2526
- Practice address
- 868 Main St
Springfield, MA 01103-2105 - Phone
- (413) 736-5491
- Fax
- (413) 746-4632
- NPI assigned
- May 11, 2006
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Chiropractor | 111N00000X | 2526 | MA | Primary |
Addresses
Primary practice location
868 Main St
Springfield, MA 01103-2105
Mailing address
128 Tannery Rd
Westfield, MA 01085-4841
Phone (413) 736-5491
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| Y35043 | Other | MA | BLUECROSS BLUESHIELD |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 2526 | MA | MD | Massage Therapist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Chiropractic Healthcare Centers of Western Mass. | Chiropractor | Past | Accepting new patients |
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Chiropractor
- Springfield, MA
- NPI 1609826833
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1147305600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1558311381",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "128 TANNERY RD",
"city": "WESTFIELD",
"state": "MA",
"postal_code": "010854841",
"telephone_number": "413-736-5491"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "868 MAIN ST",
"city": "SPRINGFIELD",
"state": "MA",
"postal_code": "011032105",
"telephone_number": "413-736-5491",
"fax_number": "413-746-4632"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MASLAR",
"first_name": "JOHN",
"middle_name": "F",
"credential": "D.C.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-05-11",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "111N00000X",
"taxonomy_group": "",
"desc": "Chiropractor",
"state": "MA",
"license": "2526",
"primary": true
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BLUECROSS BLUESHIELD",
"identifier": "Y35043",
"state": "MA"
}
],
"endpoints": [],
"other_names": []
}Other providers in Springfield, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.