Cassie Li Xu, MD - Medicare Internal Medicine in Tomball, TX

Cassie Li Xu, MD is a medicare enrolled "Internal Medicine" physician in Tomball, Texas. She went to Indiana University School Of Medicine and graduated in 2016 and has 8 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Ddrg Physicians Llc and her current practice location is 605 Holderrieth Blvd, Tomball, Texas. You can reach out to her office (for appointments etc.) via phone at (832) 794-0044.

Cassie Li Xu is licensed to practice in Texas (license number R9704) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1770947509.

Contact Information

Cassie Li Xu, MD
605 Holderrieth Blvd,
Tomball, TX 77375-6445
(832) 794-0044
Not Available

Map and Direction




Physician's Profile

Full NameCassie Li Xu
GenderFemale
SpecialityInternal Medicine
Experience8 Years
Location605 Holderrieth Blvd, Tomball, Texas
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Cassie Li Xu attended and graduated from Indiana University School Of Medicine in 2016
  NPI Data:
  • NPI Number: 1770947509
  • Provider Enumeration Date: 04/07/2016
  • Last Update Date: 09/13/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 4284963794
  • Enrollment ID: I20190909003494

Medical Identifiers

Medical identifiers for Cassie Li Xu such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1770947509NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine R9704 (Texas)Primary
208M00000XHospitalist R9704 (Texas)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hca Houston Healthcare TomballTomball, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ddrg Physicians Llc65071508363

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Cassie Li Xu allows following entities to bill medicare on her behalf.
Entity NameDdrg Physicians Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770939886
PECOS PAC ID: 6507150836
Enrollment ID: O20160810000698

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Cassie Li Xu is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Cassie Li Xu, MD
605 Holderrieth Blvd,
Tomball, TX 77375-6445

Ph: (832) 794-0044
Cassie Li Xu, MD
605 Holderrieth Blvd,
Tomball, TX 77375-6445

Ph: (832) 794-0044

Reviews and Comments


Internal Medicine Doctors in Tomball, TX

Saad M Al-saab, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 425 Holderrieth Blvd Ste 118, Tomball, TX 77375
Phone: 832-838-6088    Fax: 832-838-0922
Dr. Asiya Ahmed, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 455 School St, Suite 27, Tomball, TX 77375
Phone: 281-357-0666    Fax: 281-357-2740
Mr. Reehan Shahzad, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 929 Graham Dr Ste B, Tomball, TX 77375
Phone: 281-290-0222    Fax: 281-290-0233
Dr. Ali Raza, M.D
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 455 School St Ste 15, Tomball, TX 77375
Phone: 609-498-4142    
Dr. Mark D. Le, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 602 Lawrence Street, B, Tomball, TX 77375
Phone: 281-255-6333    Fax: 281-255-6335
Ahmad Adnan Aslam, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 308 Holderrieth Blvd, Tomball, TX 77375
Phone: 281-351-4911    Fax: 281-351-4915
Dr. Roy Edward Norman Jr., D.O.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 308 Holderrieth Blvd, Tomball, TX 77375
Phone: 281-351-4911    Fax: 281-351-4915

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.