Dr Allen J Gilson, MD - Medicare Geriatric Medicine in Frederick, MD

Dr Allen J Gilson, MD is a medicare enrolled "Internal Medicine - Pulmonary Disease" physician in Frederick, Maryland. He went to Jefferson Medical College Of Thomas Jefferson University and graduated in 1979 and has 45 years of diverse experience with area of expertise as Geriatric Medicine. His current practice location is 7115 Guilford Dr, Suite #202, Frederick, Maryland. You can reach out to his office (for appointments etc.) via phone at (301) 663-5922.

Dr Allen J Gilson is licensed to practice in Maryland (license number D0026516) 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 1346241346.

Contact Information

Dr Allen J Gilson, MD
7115 Guilford Dr, Suite #202,
Frederick, MD 21704-5199
(301) 663-5922
(301) 663-8292

Map and Direction




Physician's Profile

Full NameDr Allen J Gilson
GenderMale
SpecialityGeriatric Medicine
Experience45 Years
Location7115 Guilford Dr, Frederick, 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 Allen J Gilson attended and graduated from Jefferson Medical College Of Thomas Jefferson University in 1979
  NPI Data:
  • NPI Number: 1346241346
  • Provider Enumeration Date: 08/02/2005
  • Last Update Date: 07/25/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 7719001791
  • Enrollment ID: I20100827000032

Medical Identifiers

Medical identifiers for Dr Allen J Gilson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1346241346NPI-NPPES
330111700MedicaidMD

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine D0026516 (Maryland)Secondary
207RP1001XInternal Medicine - Pulmonary Disease D0026516 (Maryland)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Home Call - FrederickFrederick, MDHome health agency
Hospice Of Frederick CountyFrederick, MDHospice
Frederick Health HospitalFrederick, MDHospital

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 Allen J Gilson allows following entities to bill medicare on his behalf.
Entity NameFrederick Health Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982600771
PECOS PAC ID: 0446149256
Enrollment ID: O20040311000363
Entity NameAllen J Gilson M.d. Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093011298
PECOS PAC ID: 3971771486
Enrollment ID: O20110727000165

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 Allen J Gilson 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 Allen J Gilson, MD
7115 Guilford Dr, Suite #202,
Frederick, MD 21704-5199

Ph: (301) 663-5922
Dr Allen J Gilson, MD
7115 Guilford Dr, Suite #202,
Frederick, MD 21704-5199

Ph: (301) 663-5922

Reviews and Comments


Internal Medicine Doctors in Frederick, MD

Dr. Patrick Johannes Mansky, M.D.
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Gaffar A Syed, MD
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Phone: 301-698-9444    Fax: 301-695-4444
Dr. Kristin A Conley, DO
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Practice Location: 7211 Bank Ct, Frederick, MD 21703
Phone: 240-566-7830    
Mr. Lloyd E Halvorson, M.D.
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Practice Location: 7115 Guilford Dr Ste 202, Frederick, MD 21704
Phone: 301-663-5922    
Dr. Jeffrey Nathan Cowen, M.D.
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Medicare: Not Enrolled in Medicare
Practice Location: 915 Toll House Ave, Suite 308, Frederick, MD 21701
Phone: 301-663-5790    Fax: 301-698-6259
Dr. Michael Terry Sullivan, MD
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Medicare: Medicare Enrolled
Practice Location: 22 S Market Street, Frederick, MD 21701
Phone: 301-682-5683    Fax: 301-682-3499
Kellen Mulhern, D.O.
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Medicare: Medicare Enrolled
Practice Location: 7211 Bank Ct Ste 200, Frederick, MD 21703
Phone: 240-215-6310    

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.