Jeffrey J Warren, MD - Medicare Internal Medicine in Thornton, CO

Jeffrey J Warren, MD is a medicare enrolled "Internal Medicine" physician in Thornton, Colorado. He graduated from medical school in 2005 and has 19 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Inpatient Services, Pc and his current practice location is 8451 Pearl St, Thornton, Colorado. You can reach out to his office (for appointments etc.) via phone at (303) 286-5129.

Jeffrey J Warren is licensed to practice in Illinois (license number 125050254) 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 1316140627.

Contact Information

Jeffrey J Warren, MD
8451 Pearl St,
Thornton, CO 80229
(303) 286-5129
Not Available

Map and Direction




Physician's Profile

Full NameJeffrey J Warren
GenderMale
SpecialityInternal Medicine
Experience19 Years
Location8451 Pearl St, Thornton, 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:
  • Jeffrey J Warren graduated from medical school in 2005
  NPI Data:
  • NPI Number: 1316140627
  • Provider Enumeration Date: 06/06/2007
  • Last Update Date: 11/29/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 6002987666
  • Enrollment ID: I20100325000046

Medical Identifiers

Medical identifiers for Jeffrey J Warren such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1316140627NPI-NPPES
CA4079OtherILRR MEDICARE GROUP PTAN
P00617110OtherILRR MEDICARE MEMBER PTAN
809840OtherILMEDICARE GROUP #

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 125050254 (Illinois)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Inpatient Services, Pc54966512679

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. Jeffrey J Warren allows following entities to bill medicare on his behalf.
Entity NameInpatient Services, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710999768
PECOS PAC ID: 5496651267
Enrollment ID: O20031211000419
Entity NameHospitalist Medicine Physicians Of Colorado-tcg
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1053890533
PECOS PAC ID: 3072981125
Enrollment ID: O20221121001014
Entity NameSummit Hospitalists Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831972892
PECOS PAC ID: 6901259530
Enrollment ID: O20240130002372

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. Jeffrey J 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
Jeffrey J Warren, MD
5571 Dunraven Ct,
Golden, CO 80403-2071

Ph: (720) 442-6220
Jeffrey J Warren, MD
8451 Pearl St,
Thornton, CO 80229

Ph: (303) 286-5129

Reviews and Comments


Internal Medicine Doctors in Thornton, CO

James C. Higham-kessler, M.D.
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Phone: 303-252-4442    
Matthew M Mcdiarmid, DO
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Phone: 720-772-8040    Fax: 720-805-1551
Gareth R Weiner, MD
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Practice Location: 10001 N Washington St, Thornton, CO 80229
Phone: 303-252-4442    Fax: 303-429-6714
Dr. Ashley Louise Pyle, M.D.
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Practice Location: 9195 Grant St Ste 110, Thornton, CO 80229
Phone: 720-536-2460    Fax: 720-536-2466
Dr. Thomas A Haffey, D.O.
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Medicare: Accepting Medicare Assignments
Practice Location: 9141 Grant St, Suite 140, Thornton, CO 80229
Phone: 303-252-0104    Fax: 303-252-0127
Katherine Blair Schuetze, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 9195 Grant St Ste 200, Thornton, CO 80229
Phone: 303-252-0104    Fax: 303-252-8552
Dr. Kevin P O'brien, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 3260 E 104th Ave, Thornton, CO 80233
Phone: 720-929-8300    Fax: 720-929-8444

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.