Michael Aaron Gnatt, MD - Medicare Internal Medicine in Rockville, MD

Michael Aaron Gnatt, MD is a medicare enrolled "Internal Medicine" physician in Rockville, Maryland. He went to University Of Maryland School Of Medicine and graduated in 1982 and has 42 years of diverse experience with area of expertise as Internal Medicine. His current practice location is 14955 Shady Grove Rd, Suite 100, Rockville, Maryland. You can reach out to his office (for appointments etc.) via phone at (301) 990-3193.

Michael Aaron Gnatt is licensed to practice in Maryland (license number D0066915) 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 1255392866.

Contact Information

Michael Aaron Gnatt, MD
14955 Shady Grove Rd, Suite 100,
Rockville, MD 20850-8700
(301) 990-3193
(301) 990-3199

Map and Direction




Physician's Profile

Full NameMichael Aaron Gnatt
GenderMale
SpecialityInternal Medicine
Experience42 Years
Location14955 Shady Grove Rd, Rockville, 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:
  • Michael Aaron Gnatt attended and graduated from University Of Maryland School Of Medicine in 1982
  NPI Data:
  • NPI Number: 1255392866
  • Provider Enumeration Date: 03/31/2006
  • Last Update Date: 05/09/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 6507936523
  • Enrollment ID: I20091019000446

Medical Identifiers

Medical identifiers for Michael Aaron Gnatt such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1255392866NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 204857 (New York)Secondary
207R00000XInternal Medicine D0066915 (Maryland)Primary

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. Michael Aaron Gnatt allows following entities to bill medicare on his behalf.
Entity NameGnatt Medical Associates Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750714770
PECOS PAC ID: 8628203791
Enrollment ID: O20131025000387

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. Michael Aaron Gnatt 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
Michael Aaron Gnatt, MD
3100 Wyman Park Dr,
Baltimore, MD 21211-2803

Ph: () -
Michael Aaron Gnatt, MD
14955 Shady Grove Rd, Suite 100,
Rockville, MD 20850-8700

Ph: (301) 990-3193

Reviews and Comments


Internal Medicine Doctors in Rockville, MD

Dr. Sheila Gay Levin, MD
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Medicare: Not Enrolled in Medicare
Practice Location: 14955 Shady Grove Rd, Suite 150, Rockville, MD 20850
Phone: 301-340-3252    Fax: 301-340-1423
Dr. Shubir Sofat, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 10110 Molecular Dr Ste 200, Rockville, MD 20850
Phone: 301-610-4000    Fax: 301-610-4007
Dr. Kajal Dasgupta, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 2101 E Jefferson St, Kaiser Permanente Medicare Enrollment, Rockville, MD 20852
Phone: 301-816-2424    
Joseph M Haggerty, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 9707 Medical Center Dr, Suite 300, Rockville, MD 20850
Phone: 301-424-6231    Fax: 301-294-4648
Isabelle A Hertig, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 11125 Rockville Pike, Suite 208, Rockville, MD 20852
Phone: 301-881-5858    Fax: 301-260-2838
Dr. Wellington Sun, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1401 Rockville Pike, Suite 300n, Rockville, MD 20852
Phone: 301-827-3070    Fax: 301-827-3532
Dr. Wei Fan, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2401 Research Blvd Ste 370, Rockville, MD 20850
Phone: 240-690-4114    Fax: 240-654-3915

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.