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DR. DARREN WILLIAM HOLOWKA PH.D.
NPI 1104187251
Psychologist - Clinical in East Providence, RI

Active since June 06, 2012PECOS EnrolledAccepts Medicare Assignment
172 TAUNTON AVE STE 208, EAST PROVIDENCE, RI 02914(401) 450-0729(401) 537-1830 Get Directions Write a Review

NPPES record last updated: November 22, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Darren William Holowka Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DARREN WILLIAM HOLOWKA PH.D. (NPI 1104187251) is an individual clinical provider in East Providence, Rhode Island, licensed in Rhode Island (PS01423) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS and is a graduate of Other (2008).

NPPES Registry Identity

NPI1104187251
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. DARREN WILLIAM HOLOWKACredential: PH.D.
Location Address172 TAUNTON AVE STE 208East Providence, RI 02914-4541
Mailing Address172 Taunton Ave Ste 208East Providence, RI 02914-4541 · (401) 450-0729 · Fax (401) 537-1830
Phone(401) 450-0729
Fax(401) 537-1830
Sole ProprietorYes
Medical School CMSOtherGraduated 2008
Enumeration DateJune 6, 2012
Last NPPES UpdateNovember 22, 2023
NPPES CertifiedNovember 22, 2023
✔ NPI 1104187251 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in RI · PS01423
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
172 TAUNTON AVE STE 208, East Providence, RI 02914
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Other Identifiers 2

Other9490MA · Professional License
OtherPS01423RI · Professional License

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harvard Pilgrim Health Care.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

Dr. Darren William Holowka Ph.d. 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.

PECOS PAC ID749428662
PECOS Enrollment IDI20140402001494
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Darren Holowka reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Trident Psychological Services
Same address
Clinical
172 TAUNTON AVE STE 208
East Providence, RI 02914
  • Reassigned Medicare billing, Rhode Island enrollment
NPI 1306358239 (401) 450-0729

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02914 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$177.03 typical visit price
range $58.57 – $177.03
Typical copayment $44.25 (range $14.64 – $44.25)
Most-billed visit code 99205
Established Patient
$103.10 typical visit price
range $18.92 – $144.38
Typical copayment $25.77 (range $4.73 – $36.09)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TRIDENT PSYCHOLOGICAL SERVICES
Psychologist (Clinical)
172 TAUNTON AVE STE 208
EAST PROVIDENCE, RI 02914
Providence County (401) 450-0729

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 Darren Holowka's NPI number?

The NPI number for Darren Holowka is 1104187251. It was assigned to this individual provider in the NPPES registry on June 6, 2012.

Where is Darren Holowka located?

Darren Holowka practices at 172 Taunton Ave Ste 208, East Providence, RI 02914. The listed phone number is (401) 450-0729.

What is Darren Holowka's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Darren Holowka enrolled in Medicare?

Yes. Darren Holowka 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 organization bills Medicare for Darren Holowka's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Darren Holowka reassigns Medicare benefits to Trident Psychological Services (East Providence, RI). The 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 Darren Holowka's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Darren Holowka accept?

Health plans from Harvard Pilgrim Health Care list Darren Holowka 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 Darren Holowka was last updated on November 22, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.