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TRE MEDICAL, LTD.
NPI 1922112176
Obstetrics & Gynecology in Downers Grove, IL

Active since August 17, 2006CLIA 14D0695984 · Microscopy
3825 HIGHLAND AVE, SUITE 3K, DOWNERS GROVE, IL 60515(630) 968-2144(630) 968-2337 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Tre Medical, Ltd. NPPES

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

TRE MEDICAL, LTD. (NPI 1922112176) is a healthcare organization registered as an obstetrics & gynecology in Downers Grove, Illinois and active in the NPI registry since August 2006. The organization holds a CLIA Microscopy certificate valid through August 31, 2028 and lists James David Jenks, President, as its authorized official.

NPPES Registry Identity

NPI1922112176
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameTRE MEDICAL, LTD.
Location Address3825 HIGHLAND AVE, SUITE 3KDowners Grove, IL 60515-1552
Mailing Address3825 Highland Ave, Suite 3kDowners Grove, IL 60515-1552 · (630) 968-2144 · Fax (630) 968-2337
Phone(630) 968-2144
Fax(630) 968-2337
Organization SubpartNo
Authorized OfficialJames David JenksPresident · (630) 968-2144
Enumeration DateAugust 17, 2006
Last NPPES UpdateAugust 22, 2020
✔ NPI 1922112176 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
3825 HIGHLAND AVE, Downers Grove, IL 60515
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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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

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

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Tre Medical, Ltd., which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.

Clinicians, nearest first (4)

Jennifer Hannan, M.D.
Obstetrics/Gynecology
NPI 1245496868
3825 HIGHLAND AVE STE 3K
Downers Grove, IL 60515
(630) 968-2144
✔ PECOS✔ Accepts MedicareSame address
Jennifer Balash, M.D.
Obstetrics/Gynecology
NPI 1487881025
3825 HIGHLAND AVE SUITE 3K
Downers Grove, IL 60515
(630) 968-2144
✔ PECOS✔ Accepts MedicareSame address
Gloria Kim, MD
Obstetrics/Gynecology
NPI 1750530911
3825 HIGHLAND AVE SUITE 3K
Downers Grove, IL 60515
(630) 968-2144
✔ PECOS✔ Accepts MedicareSame address
Elizabeth Weldon, M.D.
Obstetrics/Gynecology
NPI 1790913648
3825 HIGHLAND AVE SUITE 3K
Downers Grove, IL 60515
(630) 968-2144
✔ PECOS✔ Accepts MedicareSame address

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 14D0695984

Tre Medical Ltd · Downers Grove, IL
Active · expires Aug 31, 2028
CLIA Number14D0695984
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2026
Certificate Expiration DateAugust 31, 2028
Laboratory DirectorJames D. Jenks MD
Laboratory Phone(630) 968-2144
Laboratory LocationTre Medical Ltd3825 Highland Ave Ste 3K, Downers Grove, IL 60515
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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 Tre Medical, Ltd.'s NPI number?

The NPI number for Tre Medical, Ltd. is 1922112176. It was assigned to this organization in the NPPES registry on August 17, 2006.

Where is Tre Medical, Ltd. located?

Tre Medical, Ltd. is located at 3825 Highland Ave Suite 3K, Downers Grove, IL 60515. The listed phone number is (630) 968-2144.

What is Tre Medical, Ltd.'s specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Tre Medical, Ltd. enrolled in Medicare?

Yes. Tre Medical, Ltd. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Tre Medical, Ltd.?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians, all in Obstetrics/Gynecology, reassign their Medicare billing to Tre Medical, 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. Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Tre Medical, Ltd. hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 14D0695984) is associated with this NPI, valid through August 31, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Tre Medical, Ltd. was last updated on August 22, 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.