Dr Barbara J Maccollum, MD - Medicare Gastroenterology in Phoenix, AZ

Dr Barbara J Maccollum, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Phoenix, Arizona. She went to University Of Arizona College Of Medicine and graduated in 1984 and has 40 years of diverse experience with area of expertise as Gastroenterology. She is a member of the group practice Arizona Digestive Health Pc and her current practice location is 1300 N 12th St, Suite 613, Phoenix, Arizona. You can reach out to her office (for appointments etc.) via phone at (602) 254-5321.

Dr Barbara J Maccollum is licensed to practice in Arizona (license number 15579) 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 1215925821.

Contact Information

Dr Barbara J Maccollum, MD
1300 N 12th St, Suite 613,
Phoenix, AZ 85006-2848
(602) 254-5321
(602) 254-6582

Map and Direction




Physician's Profile

Full NameDr Barbara J Maccollum
GenderFemale
SpecialityGastroenterology
Experience40 Years
Location1300 N 12th St, Phoenix, Arizona
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 Barbara J Maccollum attended and graduated from University Of Arizona College Of Medicine in 1984
  NPI Data:
  • NPI Number: 1215925821
  • Provider Enumeration Date: 10/07/2005
  • Last Update Date: 02/17/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 0345263463
  • Enrollment ID: I20060104000423

Medical Identifiers

Medical identifiers for Dr Barbara J Maccollum such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1215925821NPI-NPPES
317047OtherAZMEDICAID GROUP NUMBER
120390OtherAZMEDICARE GROUP NUMBER
260240MedicaidAZ

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 15579 (Arizona)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Arizona Digestive Health Pc650794073179

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 Barbara J Maccollum allows following entities to bill medicare on her behalf.
Entity NameArizona Digestive Health Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1992981583
PECOS PAC ID: 6507940731
Enrollment ID: O20080227000334

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 Barbara J Maccollum 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 Barbara J Maccollum, MD
3020 E Camelback Rd, Suite 301,
Phoenix, AZ 85016-5059

Ph: (602) 264-9100
Dr Barbara J Maccollum, MD
1300 N 12th St, Suite 613,
Phoenix, AZ 85006-2848

Ph: (602) 254-5321

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.

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.