John M Barnett, MD - Medicare Hematology/oncology in Longmont, CO

John M Barnett, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Longmont, Colorado. He went to Southern Illinois University School Of Medicine and graduated in 2000 and has 24 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Rocky Mountain Cancer Centers Llp and his current practice location is 1760 E Ken Pratt Blvd Ste 302, Longmont, Colorado. You can reach out to his office (for appointments etc.) via phone at (303) 684-1900.

John M Barnett is licensed to practice in Colorado (license number 44274) 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 1952341273.

Contact Information

John M Barnett, MD
1760 E Ken Pratt Blvd Ste 302,
Longmont, CO 80504-5311
(303) 684-1900
(303) 684-1925

Map and Direction




Physician's Profile

Full NameJohn M Barnett
GenderMale
SpecialityHematology/oncology
Experience24 Years
Location1760 E Ken Pratt Blvd Ste 302, Longmont, Colorado
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 M Barnett attended and graduated from Southern Illinois University School Of Medicine in 2000
  NPI Data:
  • NPI Number: 1952341273
  • Provider Enumeration Date: 06/07/2006
  • Last Update Date: 07/06/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 4587667894
  • Enrollment ID: I20060804000354

Medical Identifiers

Medical identifiers for John M Barnett such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1952341273NPI-NPPES
65187741MedicaidCO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 44274 (Colorado)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Longs Peak HospitalLongmont, COHospital
Longmont United HospitalLongmont, COHospital
University Of Colorado Hospital AuthorityAurora, COHospital
Boulder Community HealthBoulder, COHospital
Medical Center Of The RockiesLoveland, COHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Rocky Mountain Cancer Centers Llp7012820533117

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 M Barnett allows following entities to bill medicare on his behalf.
Entity NameRocky Mountain Cancer Centers Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1518941186
PECOS PAC ID: 7012820533
Enrollment ID: O20031111000267

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 M Barnett 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 M Barnett, MD
7951 E Maplewood Ave, Suite 300,
Greenwood Village, CO 80111

Ph: (303) 930-7800
John M Barnett, MD
1760 E Ken Pratt Blvd Ste 302,
Longmont, CO 80504-5311

Ph: (303) 684-1900

Reviews and Comments


Internal Medicine Doctors in Longmont, CO

Ms. Prachi Toni Patel, D.O.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 2101 Ken Pratt Blvd Ste 104, Longmont, CO 80501
Phone: 303-415-4157    Fax: 303-776-3109
Carl Noble, DO
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Medicare: Accepting Medicare Assignments
Practice Location: 1400 Dry Creek Dr, Longmont, CO 80503
Phone: 303-772-3300    Fax: 303-682-3380
Theresa A Tyler,
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Practice Location: 2345 Bent Way, Longmont, CO 80503
Phone: 303-743-5855    
Hossein Maymani, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1760 E Ken Pratt Blvd Ste 302, Longmont, CO 80504
Phone: 303-684-1900    Fax: 303-684-1925
Dr. Lynn Marie Carlyle, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1551 Professional Ln Unit 150, Longmont, CO 80501
Phone: 720-388-7760    Fax: 720-405-4228
Dr. Linda Backup, MD
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 1925 W Mountain View Ave, Longmont, CO 80501
Phone: 303-776-1234    Fax: 720-494-3107
Dr. Anita R. Ritenour, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1750 E Ken Pratt Blvd, Longmont, CO 80504
Phone: 720-718-7000    

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.