MERCY CLINIC
NPI 1679017677
Clinic/Center in Houston, TX

Active since December 09, 2016CLIA 45D2165478 · Accreditation
9544 RICHMOND AVE STE F, HOUSTON, TX 77063(832) 644-6265 Get Directions Write a Review

NPPES record last updated: January 23, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 23, 2017, Dec 13, 2016 (2 updates tracked since 2016).

About Mercy Clinic NPPES

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

MERCY CLINIC (NPI 1679017677) is a healthcare organization registered as a clinic/center in Houston, Texas and active in the NPI registry since December 2016. The organization holds an CLIA Accreditation certificate valid through May 5, 2028 and lists Ahmad Talib Muhammad, President, as its authorized official.

NPPES Registry Identity

NPI1679017677
Entity TypeOrganization
Primary Taxonomy261Q00000X
Legal Business NameAHMAD T MUHAMMAD MD PLLC
Location Address9544 RICHMOND AVE STE FHouston, TX 77063-3834
Mailing Address9544 Richmond Ave Ste FHouston, TX 77063-3834 · (832) 644-6265
Organization SubpartNo
Authorized OfficialAhmad Talib MuhammadPresident · (832) 644-6265
Enumeration DateDecember 9, 2016
Last NPPES UpdateJanuary 23, 20172 updates tracked since enumeration
✔ NPI 1679017677 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/CenterAmbulatory Health Care Facilities
Taxonomy Code261Q00000X
Definition
A facility or distinct part of one used for the diagnosis and treatment of outpatients. Clinic/Center is irregularly defined, sometimes being limited to organizations serving specialized treatment requirements or distinct patient/client groups (e.g., radiology, poor, and public health).
9544 RICHMOND AVE STE F, Houston, TX 77063

Other Names 1

Other NameMercy Clinic

Accepted 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)

Mercy Clinic is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Mercy Clinic, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

General Practice
NPI 1316171705
9544 RICHMOND AVE STE F
Houston, TX 77063
(713) 426-0027
✔ PECOS✔ Accepts MedicareSame address
General Practice
NPI 1902472764
12579 RICHMOND AVE
Houston, TX 77082
(832) 644-6265
✔ PECOS4.2 mi

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 of Accreditation 45D2165478

Mercy Clinic · Houston, TX
Active · expires May 5, 2028
CLIA Number45D2165478
Laboratory TypeIndependent
Certificate Effective DateMay 6, 2026
Certificate Expiration DateMay 5, 2028
Laboratory DirectorSaid H. Khayyata
Laboratory Phone(832) 644-6265
Laboratory LocationMercy Clinic12579 Richmond Ave Suite 800, Houston, TX 77082
CLIA data matches this NPI record on: Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

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 Ahmad T Muhammad MD PLLC's NPI number?

The NPI number for Ahmad T Muhammad MD PLLC is 1679017677. It was assigned to this organization in the NPPES registry on December 9, 2016. The provider is also known as Mercy Clinic.

Where is Ahmad T Muhammad MD PLLC located?

Ahmad T Muhammad MD PLLC is located at 9544 Richmond Ave Ste F, Houston, TX 77063. The listed phone number is (832) 644-6265.

What is Ahmad T Muhammad MD PLLC's specialty?

The primary specialty registered for this NPI is Clinic/Center with taxonomy code 261Q00000X.

Is Ahmad T Muhammad MD PLLC enrolled in Medicare?

Yes. Ahmad T Muhammad MD PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ahmad T Muhammad MD PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in General Practice, reassign their Medicare billing to Ahmad T Muhammad MD PLLC. 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, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Ahmad T Muhammad MD PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 45D2165478) is associated with this NPI, valid through May 5, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Ahmad T Muhammad MD PLLC accept?

Health plans from WellPoint list Ahmad T Muhammad MD PLLC 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 Ahmad T Muhammad MD PLLC was last updated on January 23, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.