Dr Aria Kallista Williams, DO - Medicare Infectious Disease in Middletown, NY

Dr Aria Kallista Williams, DO is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Middletown, New York. She graduated from medical school in 2018 and has 6 years of diverse experience with area of expertise as Infectious Disease. She is a member of the group practice St Alexius Medical Center, Physicians Of Cape Cod Hospital, Physicians Of Falmouth Hospital and her current practice location is 707 E Main St, Middletown, New York. You can reach out to her office (for appointments etc.) via phone at (845) 333-7575.

Dr Aria Kallista Williams is licensed to practice in New York (license number 271912) 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 1154566412.

Contact Information

Dr Aria Kallista Williams, DO
707 E Main St,
Middletown, NY 10940-2650
(845) 333-7575
(845) 333-7202

Map and Direction




Physician's Profile

Full NameDr Aria Kallista Williams
GenderFemale
SpecialityInfectious Disease
Experience6 Years
Location707 E Main St, Middletown, New York
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:
  • Dr Aria Kallista Williams graduated from medical school in 2018
  NPI Data:
  • NPI Number: 1154566412
  • Provider Enumeration Date: 12/15/2008
  • Last Update Date: 11/27/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 7517112683
  • Enrollment ID: I20200101000006

Medical Identifiers

Medical identifiers for Dr Aria Kallista Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1154566412NPI-NPPES
03717315MedicaidNY

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease 271912 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Cape Cod HealthcareHyannis, MAHospital
Falmouth HospitalFalmouth, MAHospital
Chi St Alexius HealthBismarck, NDHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
St Alexius Medical Center8426960865205
Physicians Of Cape Cod Hospital9638326671261
Physicians Of Falmouth Hospital680005197057

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 Aria Kallista Williams allows following entities to bill medicare on her behalf.
Entity NameSt Alexius Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205868429
PECOS PAC ID: 8426960865
Enrollment ID: O20031104000146

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 Aria Kallista 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 Aria Kallista Williams, DO
707 E Main St,
Middletown, NY 10940-2650

Ph: (845) 333-7575
Dr Aria Kallista Williams, DO
707 E Main St,
Middletown, NY 10940-2650

Ph: (845) 333-7575

Reviews and Comments


Internal Medicine Doctors in Middletown, NY

Dr. Aamir Masood Gilani, M.D
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 707 E Main St, Middletown, NY 10940
Phone: 845-333-7575    Fax: 845-333-7202
Dr. Dahlia Banerji, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 111 Maltese Dr, Middletown, NY 10940
Phone: 845-342-4774    
Rafeel O Syed, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 155 Crystal Run Rd, Middletown, NY 10941
Phone: 845-703-6999    Fax: 845-703-6297
Nancy I. Linneman, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 155 Crystal Run Rd, Middletown, NY 10941
Phone: 845-703-6999    Fax: 845-703-6297
Dr. Corina Cristescu, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 111 Maltese Dr, Middletown, NY 10940
Phone: 845-342-4774    Fax: 845-818-7555
Dr. Robert Lewis Douglas, M.D.
Infectious Disease
Medicare: Not Enrolled in Medicare
Practice Location: 210 E Main St, Middletown, NY 10940
Phone: 845-342-5681    Fax: 845-342-0470
Peggy Nelson, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 155 Crystal Run Rd, Middletown, NY 10941
Phone: 845-703-6999    Fax: 845-703-6297

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.