Jeffrey Mark Downen, MD - Medicare Emergency Medicine in Jacksonville, FL

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Jeffrey Mark Downen, MD is a medicare enrolled "Emergency Medicine" physician in Jacksonville, Florida. His current practice location is 655 W 8th St, Jacksonville, Florida. You can reach out to his office (for appointments etc.) via phone at (904) 244-6340.

Jeffrey Mark Downen is licensed to practice in Florida (license number ME173562) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1871170951.

Contact Information

Jeffrey Mark Downen, MD
655 W 8th St,
Jacksonville, FL 32209-6511
(904) 244-6340
Not Available

Map and Direction




Physician's Profile

Full NameJeffrey Mark Downen
GenderMale
SpecialityEmergency Medicine
Location655 W 8th St, Jacksonville, Florida
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1871170951
  • Provider Enumeration Date: 03/25/2021
  • Last Update Date: 07/17/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 5496293995
  • Enrollment ID: I20240815000705

Medical Identifiers

Medical identifiers for Jeffrey Mark Downen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1871170951NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine ME173562 (Florida)Primary
207P00000XEmergency Medicine 100028 (Georgia)Secondary

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 Mark Downen allows following entities to bill medicare on his behalf.
Entity NameThe Emory Clinic Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396798229
PECOS PAC ID: 8820901408
Enrollment ID: O20031110000503
Entity NameEmory Medical Care Foundation Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063452381
PECOS PAC ID: 4981501814
Enrollment ID: O20031217000968
Entity NameEmory Specialty Associates, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407864168
PECOS PAC ID: 3476559782
Enrollment ID: O20061010000447

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 Mark Downen 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 Mark Downen, MD
655 W 8th St,
Jacksonville, FL 32209-6511

Ph: () -		Jeffrey Mark Downen, MD
655 W 8th St,
Jacksonville, FL 32209-6511

Ph: (904) 244-6340

Reviews and Comments


Emergency Medicine Doctors in Jacksonville, FL

Andrew Lim, M.D.
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Phone: 904-253-3734    
Jennifer L. Mauzy, MD
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Phone: 904-296-3885    
Max T Billingsley, MD
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Phone: 904-346-5426    Fax: 904-346-0113
Kenneth Aung-din, MD
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Practice Location: 3625 University Blvd S, Jacksonville, FL 32216
Phone: 904-399-6811    Fax: 904-346-0113
Hannah Thomason Fox, M.D.
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Practice Location: 4500 San Pablo Rd S, Jacksonville, FL 32224
Phone: 904-953-2000    
Dr. Daniel R Eraso, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 655 W 8th St, Jacksonville, FL 32209
Phone: 904-244-6340    Fax: 904-244-4508
Dr. Victor Sebastian Perez, MD
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Medicare: Medicare Enrolled
Practice Location: 655 W 8th St, Jacksonville, FL 32209
Phone: 301-639-7371    

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).

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