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TRISTATE OBGYN, PC
NPI 1104274091
Obstetrics & Gynecology in Memphis, TN

Active since June 01, 2016CLIA 44D2160271 · Microscopy
3337 KIRBY PKWY, MEMPHIS, TN 38115(901) 590-4428(901) 249-5827 Get Directions Write a Review

NPPES record last updated: March 21, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 6, 2023, Feb 15, 2017, Jan 30, 2017 (3 updates tracked since 2017).

About Tristate Obgyn, Pc NPPES

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

TRISTATE OBGYN, PC (NPI 1104274091) is a healthcare organization registered as an obstetrics & gynecology in Memphis, Tennessee and active in the NPI registry since June 2016. The organization holds a CLIA Microscopy certificate valid through January 7, 2027 and lists Stephen Ehiremen, President, as its authorized official.

NPPES Registry Identity

NPI1104274091
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameTRISTATE OBGYN, PC
Location Address3337 KIRBY PKWYMemphis, TN 38115-3816
Mailing AddressPo Box 1377, Dept 800Collierville, TN 38027-1377 · (901) 590-4428 · Fax (901) 249-5827
Phone(901) 590-4428
Fax(901) 249-5827
Organization SubpartNo
Authorized OfficialStephen EhiremenPresident · (901) 937-9549
Enumeration DateJune 1, 2016
Last NPPES UpdateMarch 21, 20243 updates tracked since enumeration
NPPES CertifiedMarch 21, 2024
✔ NPI 1104274091 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.
3337 KIRBY PKWY, Memphis, TN 38115
Open in Google Maps ↗

Other Identifiers 1

MedicaidQ026152TN

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter Health, Ambetter of Alabama 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)

Tristate Obgyn, Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Tristate Obgyn, PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Stephen Ehiremen, M.D.
Obstetrics/Gynecology
NPI 1699963249
3337 KIRBY PKWY
Memphis, TN 38115
(901) 590-4428
✔ 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) 44D2160271

Tristate Obgyn PC · Memphis, TN
Active · expires Jan 7, 2027
CLIA Number44D2160271
Laboratory TypePhysician Office
Certificate Effective DateJanuary 8, 2025
Certificate Expiration DateJanuary 7, 2027
Laboratory DirectorDr. Stephen E. Ehiremen
Laboratory Phone(901) 590-4428
Laboratory LocationTristate Obgyn PC3337 Kirby Parkway, Memphis, TN 38115
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 Tristate Obgyn, PC's NPI number?

The NPI number for Tristate Obgyn, PC is 1104274091. It was assigned to this organization in the NPPES registry on June 1, 2016.

Where is Tristate Obgyn, PC located?

Tristate Obgyn, PC is located at 3337 Kirby Pkwy, Memphis, TN 38115. The listed phone number is (901) 590-4428.

What is Tristate Obgyn, PC's specialty?

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

Is Tristate Obgyn, PC enrolled in Medicare?

Yes. Tristate Obgyn, PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Tristate Obgyn, PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Obstetrics/Gynecology) reassigns their Medicare billing to Tristate Obgyn, PC. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Tristate Obgyn, PC hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 44D2160271) is associated with this NPI, valid through January 7, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Tristate Obgyn, PC accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee list Tristate Obgyn, PC 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 Tristate Obgyn, PC was last updated on March 21, 2024. 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.