Individual provider Active NPI

Darek Stanley Olearczyk, D.C

  • Chiropractor
  • Enfield, CT
National Provider Identifier
1811095391
Registry record updated Sep 3, 2020
On this page

Key facts

NPPES NPI Registry
Primary specialty
ChiropractorTaxonomy code 111N00000X
License
1691 Issued in CT
Practice address
139 Hazard Ave BLDG 2
Enfield, CT 06082-4585
Phone
(860) 993-4899
Fax
(860) 741-6818
NPI assigned
Sep 20, 2006
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 3, 2020

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Chiropractor 111N00000X 001691 CT
Chiropractor 111N00000X 1691 CT Primary

Addresses

Primary practice location

139 Hazard Ave BLDG 2
Enfield, CT 06082-4585

Mailing address

139 Hazard Ave BLDG 2
Enfield, CT 06082-4585
Phone (860) 993-4899

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20070719000241 MA Practitioner - Chiropractic 6002917192 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Chiropractic
Education
Other, 2006
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Aegis Health Partners PCGroup PAC ID 0042281867, 2 clinicians
Premier Health Group IncGroup PAC ID 6608220231, 2 clinicians

Practice addresses (Care Compare)

241 Russell St
Hadley, MA 01035-9558
Phone (413) 586-5552

246 W St
Ware, MA 01082
Phone (413) 967-0211

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
3110MAMDMental Health Counselor
001691CTMDProfessional Counselor

Practice roles

OrganizationSpecialtyStatusNew patients
Premier Health Group Inc Chiropractor CurrentSince Apr 1, 2024 Accepting new patients
Aegis Health Partners, P.C. Chiropractor CurrentSince Jun 11, 2025 Accepting new patients
Chiropractic Health Centers, LLC Chiropractor PastSince Oct 24, 2010 Accepting new patients
Aegis Health Partners, P.C. Chiropractor PastSince Jun 11, 2025 Accepting new patients
Chiropractic Wellness Center Past Accepting new patients

Locations

35 Turkey Hill Rd
Ste 105
Belchertown, MA 01007
Phone (413) 323-1115

241 Russell St
Hadley, MA 01035
Phone (413) 335-4381

654 New Ludlow Rd
South Hadley, MA 01075
Phone (413) 323-1115

246 West St
Ware, MA 01082
Phone (413) 967-0211

Organizations & group practices 5

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.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1158710400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1599091200000",
    "number": "1811095391",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "139 HAZARD AVE BLDG 2",
            "city": "ENFIELD",
            "state": "CT",
            "postal_code": "060824585",
            "telephone_number": "860-993-4899",
            "fax_number": "860-741-6818"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "139 HAZARD AVE BLDG 2",
            "city": "ENFIELD",
            "state": "CT",
            "postal_code": "060824585",
            "telephone_number": "860-993-4899",
            "fax_number": "860-741-6818"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OLEARCZYK",
        "first_name": "DAREK",
        "middle_name": "STANLEY",
        "credential": "D.C",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-09-20",
        "last_updated": "2020-09-03",
        "certification_date": "2020-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "111N00000X",
            "taxonomy_group": "",
            "desc": "Chiropractor",
            "state": "CT",
            "license": "001691",
            "primary": false
        },
        {
            "code": "111N00000X",
            "taxonomy_group": "",
            "desc": "Chiropractor",
            "state": "CT",
            "license": "1691",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Enfield, CT

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 3, 2020; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.