James O Posever, MD - Medicare Rheumatology in Phoenix, AZ

James O Posever, MD is a medicare enrolled "Internal Medicine - Rheumatology" physician in Phoenix, Arizona. He went to Northwestern University Feinberg Medical School and graduated in 1991 and has 33 years of diverse experience with area of expertise as Rheumatology. He is a member of the group practice Dhew Ind Hlth Sv Hlth Svs And Mntl Hlth Adm, Dhhs Phs Ihs Phoenix Area and his current practice location is 4212 N 16th St, Phoenix, Arizona. You can reach out to his office (for appointments etc.) via phone at (602) 263-1200.

James O Posever is licensed to practice in Arizona (license number 29356) 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 1154364214.

Contact Information

James O Posever, MD
4212 N 16th St,
Phoenix, AZ 85016-5319
(602) 263-1200
(602) 263-1593

Map and Direction




Physician's Profile

Full NameJames O Posever
GenderMale
SpecialityRheumatology
Experience33 Years
Location4212 N 16th St, Phoenix, 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:
  • James O Posever attended and graduated from Northwestern University Feinberg Medical School in 1991
  NPI Data:
  • NPI Number: 1154364214
  • Provider Enumeration Date: 06/14/2006
  • Last Update Date: 08/26/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 7113916198
  • Enrollment ID: I20040506001357

Medical Identifiers

Medical identifiers for James O Posever such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1154364214NPI-NPPES
574584MedicaidAZ

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RR0500XInternal Medicine - Rheumatology 29356 (Arizona)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Phoenix Indian Medical CenterPhoenix, AZHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Dhew Ind Hlth Sv Hlth Svs And Mntl Hlth Adm1759290901173
Dhhs Phs Ihs Phoenix Area266864710811

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. James O Posever allows following entities to bill medicare on his behalf.
Entity NameDhew Ind Hlth Sv Hlth Svs & Mntl Hlth Adm
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083643738
PECOS PAC ID: 1759290901
Enrollment ID: O20031105000797
Entity NameDhhs Phs Ihs Phoenix Area
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1265719918
PECOS PAC ID: 2668647108
Enrollment ID: O20111212000142

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. James O Posever 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
James O Posever, MD
4212 N 16th St,
Phoenix, AZ 85016-5319

Ph: (602) 263-1200
James O Posever, MD
4212 N 16th St,
Phoenix, AZ 85016-5319

Ph: (602) 263-1200

Reviews and Comments


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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.

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