Dr Andrew Robert Williams, MD - Medicare Internal Medicine in Mesa, AZ

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Dr Andrew Robert Williams, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Mesa, Arizona. He went to University Of Arizona College Of Medicine and graduated in 2012 and has 14 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Cardiovascular Associates Of Mesa Pc and his current practice location is 6309 E Baywood Ave Ste 101, Mesa, Arizona. You can reach out to his office (for appointments etc.) via phone at (480) 641-5400.

Dr Andrew Robert Williams is licensed to practice in Arizona (license number 53167) 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 1548505142.

Contact Information

Dr Andrew Robert Williams, MD
6309 E Baywood Ave Ste 101,
Mesa, AZ 85206-1726
(480) 641-5400
(480) 218-4353

Map and Direction




Physician's Profile

Full NameDr Andrew Robert Williams
GenderMale
SpecialityInternal Medicine
Experience14 Years
Location6309 E Baywood Ave Ste 101, Mesa, Arizona
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:
  • Dr Andrew Robert Williams attended and graduated from University Of Arizona College Of Medicine in 2012
  NPI Data:
  • NPI Number: 1548505142
  • Provider Enumeration Date: 12/07/2012
  • Last Update Date: 06/25/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7214219666
  • Enrollment ID: I20170120000732

Medical Identifiers

Medical identifiers for Dr Andrew Robert Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1548505142NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 53167 (Arizona)Secondary
207RC0000XInternal Medicine - Cardiovascular Disease 53167 (Arizona)Primary
208000000XPediatrics 53167 (Arizona)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Gilbert Medical CenterGilbert, AZHospital
Banner Baywood Medical CenterMesa, AZHospital
Banner Heart HospitalMesa, AZHospital
Banner Ironwood Medical CenterQueen creek, AZHospital
Banner - University Medical Center PhoenixPhoenix, AZHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Cardiovascular Associates Of Mesa Pc377947935714

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. Dr Andrew Robert Williams allows following entities to bill medicare on his behalf.
Entity NameCardiovascular Associates of Mesa PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1104815158
PECOS PAC ID: 3779479357
Enrollment ID: O20040223000639
Entity NameCardiovascular Associates of Mesa PC
Entity TypePart B Supplier - Intensive Cardiac Rehabilitation
Entity IdentifiersNPI Number: 1134967680
PECOS PAC ID: 3779479357
Enrollment ID: O20240821004267

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. Dr Andrew Robert Williams 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
Dr Andrew Robert Williams, MD
6309 E Baywood Ave Ste 101,
Mesa, AZ 85206-1726

Ph: (480) 641-5400		Dr Andrew Robert Williams, MD
6309 E Baywood Ave Ste 101,
Mesa, AZ 85206-1726

Ph: (480) 641-5400

Reviews and Comments


Internal Medicine Doctors in Mesa, AZ

Ankur Panchal,
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Practice Location: 6424 E Broadway Rd Ste 105, Mesa, AZ 85206
Phone: 480-733-7500    
Yury Fomin, MD
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Practice Location: 1400 S Dobson Road, Mesa, AZ 85202
Phone: 480-412-6788    Fax: 480-412-6848
Gregg Alan Smith, D.O.
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Practice Location: 1042 N Higley Rd, Suite 102-602, Mesa, AZ 85205
Phone: 480-242-6297    Fax: 480-699-3129
Dr. Emmanuel A Bayongan, M.D.
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Practice Location: 1400 S Dobson Rd, Mesa, AZ 85202
Phone: 480-543-2034    Fax: 480-512-6089
Dr. Sanjeev Gopal, MD
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Practice Location: 6424 E Broadway Rd, 104-105, Mesa, AZ 85206
Phone: 602-802-8700    Fax: 602-802-8799
Dr. Alpesh Patel, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 10238 E Hampton Ave Ste 205, Mesa, AZ 85209
Phone: 480-856-8252    Fax: 470-268-9921
Mouhsen H Alhakeem, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1400 S Dobson Road, Attn Amanda Gump/hospitalist, Mesa, AZ 85202
Phone: 480-412-6788    Fax: 480-412-6848

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.