Seth Y Flagg, MD - Medicare Family Practice in Upper Marlboro, MD

Seth Y Flagg, MD is a medicare enrolled "Family Medicine" physician in Upper Marlboro, Maryland. He went to Tufts University School Of Medicine and graduated in 2006 and has 19 years of diverse experience with area of expertise as Family Practice. 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 (240) 672-3190.

Seth Y Flagg is licensed to practice in Maryland (license number 0082488) 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 1548305451.

Contact Information

Seth Y Flagg, MD
1221 Mercantile Ln,
Upper Marlboro, MD 20774-5374
(240) 672-3190
Not Available

Map and Direction




Physician's Profile

Full NameSeth Y Flagg
GenderMale
SpecialityFamily Practice
Experience19 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:
  • Seth Y Flagg attended and graduated from Tufts University School Of Medicine in 2006
  NPI Data:
  • NPI Number: 1548305451
  • Provider Enumeration Date: 02/20/2007
  • Last Update Date: 06/26/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 1759562416
  • Enrollment ID: I20110301000259

Medical Identifiers

Medical identifiers for Seth Y Flagg such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1548305451NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist 0082488 (Maryland)Secondary
207Q00000XFamily Medicine 0082488 (Maryland)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Americare In Home NursingFort washington, MDHome health agency
Capital HospiceLargo, MDHospice

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Kaiser Foundation Health Plan Of The Mid-atlantic States, Inc37794958581628

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. Seth Y Flagg 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. Seth Y Flagg 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
Seth Y Flagg, MD
2101 E Jefferson St Ste 6w,
Rockville, MD 20852-4908

Ph: (301) 816-5853
Seth Y Flagg, MD
1221 Mercantile Ln,
Upper Marlboro, MD 20774-5374

Ph: (240) 672-3190

Reviews and Comments


Family Medicine Doctors in Upper Marlboro, MD

Dr. Olufemi Ebunolu Balogun, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1221 Mercantile Ln, Upper Marlboro, MD 20774
Phone: 301-618-5500    
Jericho De Mata, D.O.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1221 Mercantile Ln, Upper Marlboro, MD 20774
Phone: 301-618-5500    
David Auh, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1221 Mercantile Ln, Upper Marlboro, MD 20774
Phone: 301-618-5500    
Alyssa Mckenna, DO
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1221 Mercantile Lane, Upper Marlboro, MD 20774
Phone: 301-386-6600    Fax: 724-770-7947
Dr. John Herman Wills, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 14310 Old Marlboro Pike, Upper Marlboro, MD 20772
Phone: 301-627-1448    Fax: 301-627-5010
Hannah Korman, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 13400 Edgemeade Rd, Upper Marlboro, MD 20772
Phone: 240-681-6000    
Aklecia Mcvoy,
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 9440 Marlboro Pike, Building 8, Upper Marlboro, MD 20772
Phone: 301-952-8614    

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.