Stephen T Nguyen, MD - Medicare Internal Medicine in Gaithersburg, MD

Stephen T Nguyen, MD is a medicare enrolled "Internal Medicine" physician in Gaithersburg, Maryland. He graduated from medical school in 2001 and has 23 years of diverse experience with area of expertise as Internal Medicine. His current practice location is 4 Professional Dr Ste 133, Gaithersburg, Maryland. You can reach out to his office (for appointments etc.) via phone at (301) 974-9625.

Stephen T Nguyen is licensed to practice in Maryland (license number D0063163) 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 1265596050.

Contact Information

Stephen T Nguyen, MD
4 Professional Dr Ste 133,
Gaithersburg, MD 20879-3426
(301) 974-9625
Not Available

Map and Direction




Physician's Profile

Full NameStephen T Nguyen
GenderMale
SpecialityInternal Medicine
Experience23 Years
Location4 Professional Dr Ste 133, Gaithersburg, 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:
  • Stephen T Nguyen graduated from medical school in 2001
  NPI Data:
  • NPI Number: 1265596050
  • Provider Enumeration Date: 12/19/2006
  • Last Update Date: 08/02/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 3274564430
  • Enrollment ID: I20090430000448

Medical Identifiers

Medical identifiers for Stephen T Nguyen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1265596050NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine D0063163 (Maryland)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Adventist Healthcare Shady Grove Medical CenterRockville, 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. Stephen T Nguyen allows following entities to bill medicare on his behalf.
Entity NameThien Long, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174801609
PECOS PAC ID: 5092977876
Enrollment ID: O20120425000170

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. Stephen T Nguyen 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
Stephen T Nguyen, MD
4 Professional Dr Ste 133,
Gaithersburg, MD 20879-3426

Ph: (301) 974-9625
Stephen T Nguyen, MD
4 Professional Dr Ste 133,
Gaithersburg, MD 20879-3426

Ph: (301) 974-9625

Reviews and Comments


Internal Medicine Doctors in Gaithersburg, MD

Diane Mukherjee, MD
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Phone: 240-773-0300    
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Phone: 301-948-8780    Fax: 301-519-9093
Dr. Alan Vinitsky, M.D
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Phone: 301-840-0002    Fax: 301-417-0262
Qiufang Cheng, MD
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Practice Location: 16009 Comprint Cir, Gaithersburg, MD 20877
Phone: 301-339-8264    Fax: 301-339-8257
Miranda Kai Hunter, MD
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Phone: 240-813-8740    
Dr. Tuanh Tonnu, MD
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Practice Location: 9057 Shady Grove Ct, Gaithersburg, MD 20877
Phone: 301-721-1614    Fax: 301-721-1624
Dr. Suhair A Abulfarag, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 604 S Frederick Ave Ste 413, Gaithersburg, MD 20877
Phone: 301-330-4414    Fax: 301-216-1637

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.