Aijaz Ahmed, MD - Medicare Internal Medicine in Stanford, CA

Aijaz Ahmed, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Stanford, California. He graduated from medical school in 1990 and has 34 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Stanford Health Care, Stanford Health Care and his current practice location is 300 Pasteur Dr, Stanford, California. You can reach out to his office (for appointments etc.) via phone at (650) 723-4000.

Aijaz Ahmed is licensed to practice in California (license number A60520) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1447351747.

Contact Information

Aijaz Ahmed, MD
300 Pasteur Dr,
Stanford, CA 94305-2200
(650) 723-4000
Not Available

Map and Direction




Physician's Profile

Full NameAijaz Ahmed
GenderMale
SpecialityInternal Medicine
Experience34 Years
Location300 Pasteur Dr, Stanford, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Aijaz Ahmed graduated from medical school in 1990
  NPI Data:
  • NPI Number: 1447351747
  • Provider Enumeration Date: 09/26/2006
  • Last Update Date: 04/12/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 4284709866
  • Enrollment ID: I20140103001117

Medical Identifiers

Medical identifiers for Aijaz Ahmed such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1447351747NPI-NPPES
00A605200MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207QB0002XFamily Medicine - Obesity Medicine A60520 (California)Secondary
207RT0003XInternal Medicine - Transplant Hepatology A60520 (California)Secondary
207RG0100XInternal Medicine - Gastroenterology A60520 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Stanford Health CareStanford, CAHospital
French Hospital Medical CenterSan luis obispo, CAHospital
Marian Regional Medical CenterSanta maria, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Stanford Health Care67097974912572
Stanford Health Care67097974912572

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. Aijaz Ahmed allows following entities to bill medicare on his behalf.
Entity NameStanford Health Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437292927
PECOS PAC ID: 6709797491
Enrollment ID: O20120605000404

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. Aijaz Ahmed 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
Aijaz Ahmed, MD
300 Pasteur Dr,
Stanford, CA 94305-2200

Ph: (650) 723-4000
Aijaz Ahmed, MD
300 Pasteur Dr,
Stanford, CA 94305-2200

Ph: (650) 723-4000

Reviews and Comments


Internal Medicine Doctors in Stanford, CA

Prista Charuworn, MD
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 300 Pasteur Dr, Alway Build M211, Mc 5187, Stanford, CA 94305
Phone: 650-723-6661    
Dr. Yu Kuang Lai, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    
Andrea Lorenze, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Drive, Lane 154, Stanford, CA 94305
Phone: 650-723-6661    Fax: 650-498-6205
Audra Horomanski,
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    Fax: 650-498-6205
Dr. Meghan Brady Marmor, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, H3143, Stanford, CA 94305
Phone: 650-723-1150    Fax: 650-725-5489
Lauren Michelle Ulsh, MD
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    
Ann M Chen, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, A149, Mc5202, Stanford, CA 94305
Phone: 650-725-3376    Fax: 650-723-8305

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.