John Angelo Gnassi, MD - Medicare Hospitalist in Parker, AZ

John Angelo Gnassi, MD is a medicare enrolled "Family Medicine" physician in Parker, Arizona. He went to Rutgers R W Johnson Medical School (cam/new Bruns/pisc) and graduated in 1988 and has 36 years of diverse experience with area of expertise as Hospitalist. He is a member of the group practice Us Health Dept Of Health And Human Services and his current practice location is 12033 Agency Rd, Parker, Arizona. You can reach out to his office (for appointments etc.) via phone at (928) 669-2137.

John Angelo Gnassi is licensed to practice in Massachusetts (license number 74549) 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 1629066105.

Contact Information

John Angelo Gnassi, MD
12033 Agency Rd,
Parker, AZ 85344-7718
(928) 669-2137
Not Available

Map and Direction




Physician's Profile

Full NameJohn Angelo Gnassi
GenderMale
SpecialityHospitalist
Experience36 Years
Location12033 Agency Rd, Parker, 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:
  • John Angelo Gnassi attended and graduated from Rutgers R W Johnson Medical School (cam/new Bruns/pisc) in 1988
  NPI Data:
  • NPI Number: 1629066105
  • Provider Enumeration Date: 10/10/2005
  • Last Update Date: 08/11/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 2365488715
  • Enrollment ID: I20210119001789

Medical Identifiers

Medical identifiers for John Angelo Gnassi such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1629066105NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 74549 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
P H S Indian Hospital Crow / Northern CheyenneCrow agency, MTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Us Health Dept Of Health And Human Services963808162390

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. John Angelo Gnassi allows following entities to bill medicare on his behalf.
Entity NameUs Health Dept Of Health & Human Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972694602
PECOS PAC ID: 9638081623
Enrollment ID: O20031106000399
Entity NameDhhs Ihs Phoenix Area
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396022026
PECOS PAC ID: 0244405629
Enrollment ID: O20120105000013

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. John Angelo Gnassi 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
John Angelo Gnassi, MD
236 Rainbow Dr # 13625,
Livingston, TX 77399-2036

Ph: (857) 210-3900
John Angelo Gnassi, MD
12033 Agency Rd,
Parker, AZ 85344-7718

Ph: (928) 669-2137

Reviews and Comments


Family Medicine Doctors in Parker, AZ

Dr. Ricky Lee Seabul, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 12033 Agency Rd, Parker, AZ 85344
Phone: 928-669-2173    Fax: 928-669-2571
Dr. Odie Vernon Newborn Jr., M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 12033 Agency Rd, Parker, AZ 85344
Phone: 928-669-3300    Fax: 928-669-3131
Ronald Dale Parker, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1713 S Kofa Ave, Suite A, Parker, AZ 85344
Phone: 928-669-9700    Fax: 928-669-9104
Keith Westley Shillito, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 905 Fiesta, Parker, AZ 85344
Phone: 928-669-2225    Fax: 928-669-6751
Dr. Gerald Leland Ferris, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 12033 Agency Rd, Parker, AZ 85344
Phone: 928-669-2137    Fax: 928-669-3366
Dr. Mary Beth Mccoy, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 12033 Agency Rd, Parker, AZ 85344
Phone: 928-669-2137    Fax: 928-669-3222
Jesus Basi Carpio, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1404 W Arizona Ave, Parker, AZ 85344
Phone: 928-669-2137    

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.