ATIF SIDDIQUI M.D.
NPI 1063695336
Internal Medicine - Critical Care Medicine in Houston, TX
About Atif Siddiqui M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ATIF SIDDIQUI M.D. (NPI 1063695336) is an individual critical care medicine provider in Houston, Texas, licensed in Texas (P8540) and active in the NPI registry since December 2007. He is enrolled in Medicare PECOS, is affiliated with Memorial Hermann Hospital System, and maintains a secondary practice location in Odessa.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Atif 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
5Medicare enrollment records show Atif Siddiqui reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Houston, TX 77042
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: U S Anesthesia Partners Of Texas, PA
- 3,804 clinicians in this Medicare group
Houston, TX 77008
- Reassigned Medicare billing, Texas enrollment
- 121 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 3,111 clinicians in this Medicare group
Scottsdale, AZ 85254
- Reassigned Medicare billing, Texas enrollment
- 163 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 10
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Memorial Hermann Hospital System
Acute Care Hospitals · Houston, TXHouston Methodist Hospital
Acute Care Hospitals · Houston, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77042 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 4
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HOUSTON, TX 77042
HOUSTON, TX 77042
HOUSTON, TX 77042
HOUSTON, TX 77042
HOUSTON, TX 77042
HOUSTON, TX 77042
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 Atif Siddiqui's NPI number?
The NPI number for Atif Siddiqui is 1063695336. It was assigned to this individual provider in the NPPES registry on December 10, 2007.
Where is Atif Siddiqui located?
Atif Siddiqui practices at 1500 Citywest Blvd Ste 300, Houston, TX 77042. The listed phone number is (713) 620-4000.
What is Atif Siddiqui's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Atif Siddiqui enrolled in Medicare?
Yes. Atif 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 Atif Siddiqui's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Atif Siddiqui reassigns Medicare benefits to 5 organizations: U. S. Anesthesia Partners Of Texas, P.A., (Houston, TX), Knd Development 59 LLC (Houston, TX), Medical Center Pulmonary Consultant LLC (Houston, TX), Ut Physicians (Houston, TX) and Apogee Medical Group Texas PA (Scottsdale, AZ). 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 Atif Siddiqui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Atif Siddiqui accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 2 other insurers list Atif 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 Atif Siddiqui affiliated with any hospitals?
According to CMS data, Atif Siddiqui is affiliated with Memorial Hermann Hospital System and Houston Methodist Hospital.
When was this NPI record last updated?
The NPPES record for Atif Siddiqui was last updated on April 20, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.