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DERMATOLOGY ASSOCIATES LTD
NPI 1497968945
Specialist in Tinley Park, IL

Active since May 08, 2007
18425 W CREEK DR, STE F, TINLEY PARK, IL 60477(708) 444-8300(708) 444-8301 Get Directions Write a Review

NPPES record last updated: December 7, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 7, 2021, Aug 17, 2020, Apr 11, 2019 (3 updates tracked since 2019).

About Dermatology Associates Ltd NPPES

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

DERMATOLOGY ASSOCIATES LTD (NPI 1497968945) is a healthcare organization registered as a specialist in Tinley Park, Illinois and active in the NPI registry since May 2007. The organization lists Vivek Iyengar, Owner, as its authorized official.

NPPES Registry Identity

NPI1497968945
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameDERMATOLOGY ASSOCIATES LTD
Location Address18425 W CREEK DR, STE FTinley Park, IL 60477-6767
Mailing Address18425 W Creek Dr, Ste FTinley Park, IL 60477-6767 · (708) 444-8300 · Fax (708) 444-8301
Phone(708) 444-8300
Fax(708) 444-8301
Organization SubpartNo
Authorized OfficialVivek IyengarOwner · (708) 444-8300
Enumeration DateMay 8, 2007
Last NPPES UpdateDecember 7, 20213 updates tracked since enumeration
NPPES CertifiedJanuary 28, 2021
✔ NPI 1497968945 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in IL · 042618383
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Also ListedNon-Pharmacy Dispensing SiteTaxonomy 332900000X
18425 W CREEK DR, Tinley Park, IL 60477
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Absolute Total Care, Ambetter from Arkansas Health & Wellness and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dermatology Associates Ltd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Dermatology Associates Ltd, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (6)

Vivek Iyengar, M.D.
Dermatology
NPI 1073589297
18425 W WEST CREEK DR STE F
Tinley Park, IL 60477
(708) 444-8300
✔ PECOS✔ Accepts MedicareSame address
Manuel Mesirow, M.D.
Dermatology
NPI 1396711503
18425 W WEST CREEK DR STE F
Tinley Park, IL 60477
(708) 444-8300
✔ PECOS✔ Accepts MedicareSame address
Valerie Laniosz, M.D., PHD
Dermatology
NPI 1699064824
8110 S CASS AVENUE
Darien, IL 60561
(630) 920-1900
✔ PECOS✔ Accepts Medicare16 mi
Karl Napekoski, M.D.
Pathology
NPI 1235372301
3815 HIGHLAND AVE
Downers Grove, IL 60515
(630) 275-1027
✔ PECOS✔ Accepts Medicare21 mi
Rahel John, M.D.
Pathology
NPI 1629267612
3815 HIGHLAND AVE
Downers Grove, IL 60515
(813) 476-3705
✔ PECOS✔ Accepts Medicare21 mi
Ralph Fiore, D.O
Dermatology
NPI 1770524043
1725 W HARRISON ST STE 264
Chicago, IL 60612
(312) 942-2195
✔ PECOS✔ Accepts Medicare23 mi

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

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 Dermatology Associates Ltd's NPI number?

The NPI number for Dermatology Associates Ltd is 1497968945. It was assigned to this organization in the NPPES registry on May 8, 2007.

Where is Dermatology Associates Ltd located?

Dermatology Associates Ltd is located at 18425 W Creek Dr Ste F, Tinley Park, IL 60477. The listed phone number is (708) 444-8300.

What is Dermatology Associates Ltd's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Dermatology Associates Ltd enrolled in Medicare?

Yes. Dermatology Associates Ltd is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Dermatology Associates Ltd?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 2 Medicare specialties reassign their Medicare billing to Dermatology Associates Ltd. A 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 the clinician's services. The largest specialties are Dermatology (4) and Pathology (2). Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Dermatology Associates Ltd accept?

Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arkansas Health & Wellness and 36 other insurers list Dermatology Associates Ltd 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 Dermatology Associates Ltd was last updated on December 7, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.