DAREK STANLEY OLEARCZYK D.C
NPI 1811095391
Chiropractor in Enfield, CT
About Darek Stanley Olearczyk D.c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAREK STANLEY OLEARCZYK D.C (NPI 1811095391) is an individual chiropractor in Enfield, Connecticut, licensed in Connecticut (1691) and active in the NPI registry since September 2006. He is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Darek Stanley Olearczyk D.c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Darek Olearczyk reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Belchertown, MA 01007
- Reassigned Medicare billing, Massachusetts enrollment
- 4 clinicians in this Medicare group
Hadley, MA 01035
- Reassigned Medicare billing, Massachusetts enrollment
- Medicare enrollment name: Aegis Health Partners PC
- 3 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Darek Olearczyk's NPI number?
The NPI number for Darek Olearczyk is 1811095391. It was assigned to this individual provider in the NPPES registry on September 20, 2006.
Where is Darek Olearczyk located?
Darek Olearczyk practices at 139 Hazard Ave Bldg 2, Enfield, CT 06082. The listed phone number is (860) 993-4899.
What is Darek Olearczyk's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Darek Olearczyk enrolled in Medicare?
Yes. Darek Olearczyk is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Darek Olearczyk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Darek Olearczyk reassigns Medicare benefits to 2 organizations: Premier Health Group Inc (Belchertown, MA) and Aegis Health Partners, P.C. (Hadley, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Darek Olearczyk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Darek Olearczyk accept?
Health plans from Providence Health Plan list Darek Olearczyk as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Darek Olearczyk was last updated on September 3, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Darek Stanley Olearczyk, D.C · NPI 1811095391
Chiropractor provider in Enfield, Connecticut. Individual provider, active in the CMS NPPES registry since September 20, 2006.
## Identity
- **NPI:** 1811095391 (Entity type: Individual)
- **Enumerated:** September 20, 2006
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** 1691 (Connecticut)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 139 HAZARD AVE BLDG 2, Enfield, CT 06082-4585
- **Phone:** (860) 993-4899 · **Fax:** (860) 741-6818
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Premier Health Group Inc (NPI 1699408534, Belchertown, MA); Aegis Health Partners, P.C. (NPI 1508087024, Hadley, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** September 3, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1811095391) · Data from the CMS NPPES public registry.