James Douglas Warren, MD - Medicare Otolaryngology in Boulder, CO

James Douglas Warren, MD is a medicare enrolled "Otolaryngology" physician in Boulder, Colorado. He went to University Of Missouri, Columbia School Of Medicine and graduated in 1984 and has 40 years of diverse experience with area of expertise as Otolaryngology. He is a member of the group practice Boulder Valley Ear Nose And Throat Associates Pc and his current practice location is 4745 Arapahoe Ave, Ste 130, Boulder, Colorado. You can reach out to his office (for appointments etc.) via phone at (303) 443-2771.

James Douglas Warren is licensed to practice in Colorado (license number 29977) 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 1194743450.

Contact Information

James Douglas Warren, MD
4745 Arapahoe Ave, Ste 130,
Boulder, CO 80303-1080
(303) 443-2771
(303) 443-2784

Map and Direction




Physician's Profile

Full NameJames Douglas Warren
GenderMale
SpecialityOtolaryngology
Experience40 Years
Location4745 Arapahoe Ave, Boulder, 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:
  • James Douglas Warren attended and graduated from University Of Missouri, Columbia School Of Medicine in 1984
  NPI Data:
  • NPI Number: 1194743450
  • Provider Enumeration Date: 07/17/2006
  • Last Update Date: 03/07/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 0840198719
  • Enrollment ID: I20080717000823

Medical Identifiers

Medical identifiers for James Douglas Warren such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1194743450NPI-NPPES
29977OtherCOSTATE LICENSE
01299775MedicaidCO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Y00000XOtolaryngology 29977 (Colorado)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Boulder Community HealthBoulder, COHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Boulder Valley Ear Nose And Throat Associates Pc923412821611

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 Douglas Warren allows following entities to bill medicare on his behalf.
Entity NameBoulder Valley Ear Nose & Throat Associates Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194948026
PECOS PAC ID: 9234128216
Enrollment ID: O20040506001340

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 Douglas Warren 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 Douglas Warren, MD
4745 Arapahoe Ave, Ste 130,
Boulder, CO 80303-1080

Ph: (303) 443-2771
James Douglas Warren, MD
4745 Arapahoe Ave, Ste 130,
Boulder, CO 80303-1080

Ph: (303) 443-2771

Reviews and Comments


Otolaryngology Doctors in Boulder, CO

David D Morrissey, M.D.
Otolaryngology
Medicare: Accepting Medicare Assignments
Practice Location: 4745 Arapahoe Ave, Ste 130, Boulder, CO 80303
Phone: 303-443-2771    Fax: 303-443-2784
Dr. Mark Hunter, M.D.
Otolaryngology
Medicare: Accepting Medicare Assignments
Practice Location: 2750 Broadway St, Boulder, CO 80304
Phone: 303-440-3073    
Dr. Donald A Maschka, M.D.
Otolaryngology
Medicare: Accepting Medicare Assignments
Practice Location: 4745 Arapahoe Ave, Suite 130, Boulder, CO 80303
Phone: 303-443-2771    Fax: 303-443-2784
William C Lillydahl, M.D.
Otolaryngology
Medicare: Not Enrolled in Medicare
Practice Location: 2750 Broadway St, Boulder, CO 80304
Phone: 303-440-3000    
Mrs. Angela Cogburn Paddack, M.D.
Otolaryngology
Medicare: Accepting Medicare Assignments
Practice Location: 4745 Arapahoe Ave Ste 200, Boulder, CO 80303
Phone: 303-440-3073    Fax: 303-541-0807
Don H Schilling, M.D.
Otolaryngology
Medicare: Not Enrolled in Medicare
Practice Location: 4745 Arapahoe Ave, Ste 130, Boulder, CO 80303
Phone: 303-443-2771    Fax: 303-443-2784

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.