ABDULLAH J SIDDIQUI M.D
NPI 1598184459
Internal Medicine - Endocrinology, Diabetes & Metabolism in Richmond, TX
About Abdullah J Siddiqui M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ABDULLAH J SIDDIQUI M.D (NPI 1598184459) is an individual endocrinology, diabetes & metabolism provider in Richmond, Texas, licensed in California (A146504) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with Houston Methodist Hospital, and maintains 6 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 6
Other Identifiers 3
Accepted 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
Abdullah J Siddiqui M.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.
Medicare Billing Reassignments
4Medicare enrollment records show Abdullah Siddiqui reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,407 clinicians in this Medicare group
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- 681 clinicians in this Medicare group
Palm Springs, CA 92262
- Reassigned Medicare billing, California enrollment
- 962 clinicians in this Medicare group
Murrieta, CA 92562
- Reassigned Medicare billing, California enrollment
- 349 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Houston Methodist Hospital
Acute Care Hospitals · Houston, TXHouston Methodist Sugarland Hospital
Acute Care Hospitals · Sugar Land, TXHouston Methodist West Hospital
Acute Care Hospitals · Houston, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77407 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Abdullah Siddiqui's NPI number?
The NPI number for Abdullah Siddiqui is 1598184459. It was assigned to this individual provider in the NPPES registry on April 8, 2014.
Where is Abdullah Siddiqui located?
Abdullah Siddiqui practices at 10745 W Grand Pkwy S, Richmond, TX 77407. The listed phone number is (281) 275-0130.
What is Abdullah Siddiqui's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is Abdullah Siddiqui enrolled in Medicare?
Yes. Abdullah Siddiqui 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 organizations bill Medicare for Abdullah Siddiqui's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Abdullah Siddiqui reassigns Medicare benefits to 4 organizations: Tmh Physician Associates PLLC (Houston, TX), Hospital Medicine Services Of Tx, PLLC (San Antonio, TX), Galen Inpatient Physicians Inc. (Palm Springs, CA) and Riverside Medical Clinic, Inc (Murrieta, CA). Each 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 Abdullah Siddiqui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Abdullah Siddiqui accept?
Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, CareSource and Oscar Insurance Company list Abdullah Siddiqui 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.
Is Abdullah Siddiqui affiliated with any hospitals?
According to CMS data, Abdullah Siddiqui is affiliated with Houston Methodist Hospital, Houston Methodist Sugarland Hospital and Houston Methodist West Hospital.
When was this NPI record last updated?
The NPPES record for Abdullah Siddiqui was last updated on January 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.
# Abdullah J Siddiqui, M.D · NPI 1598184459
Endocrinology, Diabetes & Metabolism physician in Richmond, Texas. Individual provider, active in the CMS NPPES registry since April 8, 2014.
## Identity
- **NPI:** 1598184459 (Entity type: Individual)
- **Enumerated:** April 8, 2014
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **State license:** A146504 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 10745 W GRAND PKWY S, Richmond, TX 77407-8711
- **Phone:** (281) 275-0130
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Tmh Physician Associates PLLC (NPI 1275779225, Houston, TX); Hospital Medicine Services Of Tx, PLLC (NPI 1881392363, San Antonio, TX); Galen Inpatient Physicians Inc. (NPI 1316037021, Palm Springs, CA); Riverside Medical Clinic, Inc (NPI 1700295607, Murrieta, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** January 20, 2025
- **Other identifiers:** Medicaid 374720601 (TX); Other 374720602 (TX); Other R3755 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1598184459) · Data from the CMS NPPES public registry.