Dr Jan Zakrzewski, MD - Medicare Infectious Disease in Upper Marlboro, MD

Dr Jan Zakrzewski, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Upper Marlboro, Maryland. He went to State University Of New York At Buffalo School Of Medicine and graduated in 2013 and has 11 years of diverse experience with area of expertise as Infectious Disease. He is a member of the group practice Kaiser Foundation Health Plan Of The Mid-atlantic States,inc and his current practice location is 1221 Mercantile Ln, Upper Marlboro, Maryland. You can reach out to his office (for appointments etc.) via phone at (301) 618-5647.

Dr Jan Zakrzewski is licensed to practice in Maryland (license number D85540) 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 1063855328.

Contact Information

Dr Jan Zakrzewski, MD
1221 Mercantile Ln,
Upper Marlboro, MD 20774
(301) 618-5647
(301) 618-5504

Map and Direction




Physician's Profile

Full NameDr Jan Zakrzewski
GenderMale
SpecialityInfectious Disease
Experience11 Years
Location1221 Mercantile Ln, Upper Marlboro, Maryland
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:
  • Dr Jan Zakrzewski attended and graduated from State University Of New York At Buffalo School Of Medicine in 2013
  NPI Data:
  • NPI Number: 1063855328
  • Provider Enumeration Date: 04/16/2013
  • Last Update Date: 05/28/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 5991069411
  • Enrollment ID: I20180717001694

Medical Identifiers

Medical identifiers for Dr Jan Zakrzewski such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1063855328NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease D85540 (Maryland)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Kaiser Foundation Health Plan Of The Mid-atlantic States,inc37794958581673

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 Jan Zakrzewski allows following entities to bill medicare on his behalf.
Entity NameKaiser Foundation Health Plan Of The Mid-atlantic States,inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952461816
PECOS PAC ID: 3779495858
Enrollment ID: O20040105000308

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 Jan Zakrzewski 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 Jan Zakrzewski, MD
1221 Mercantile Ln Dept Of,
Upper Marlboro, MD 20774-5374

Ph: (301) 618-5647
Dr Jan Zakrzewski, MD
1221 Mercantile Ln,
Upper Marlboro, MD 20774

Ph: (301) 618-5647

Reviews and Comments


Internal Medicine Doctors in Upper Marlboro, MD

Dr. Eugene Aloysius Magee Iv, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 9662 Pennsylvania Ave, Upper Marlboro, MD 20772
Phone: 301-599-1500    Fax: 301-599-1502
Dr. Kevin Smith, MD
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 1221 Mercantile Ln, Upper Marlboro, MD 20774
Phone: 301-618-5545    
Dr. Sisom Osia, M.D
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 9628 Marlboro Pike, Upper Marlboro, MD 20772
Phone: 301-599-7010    Fax: 301-599-1222
Dr. Allison Regina Edwards,
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 6409 Crain Hwy, Upper Marlboro, MD 20772
Phone: 301-952-8614    
Dr. Alexis Gorden Mccary, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1221 Mercantile Lane, Upper Marlboro, MD 20774
Phone: 301-618-5500    Fax: 301-618-5978
Dr. John Hyoungsub Shin, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1221 Mercantile Ln, Upper Marlboro, MD 20774
Phone: 301-618-5620    

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.

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