Sylvia Casas De Leon, MD - Medicare Ophthalmology in Reston, VA

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Sylvia Casas De Leon, MD is a medicare enrolled "Ophthalmology - Cornea And External Diseases Specialist" physician in Reston, Virginia. She went to Baylor College Of Medicine and graduated in 2015 and has 9 years of diverse experience with area of expertise as Ophthalmology. She is a member of the group practice Privia Medical Group Llc and her current practice location is 1800 Town Center Dr Ste 317, Reston, Virginia. You can reach out to her office (for appointments etc.) via phone at (703) 437-3900.

Sylvia Casas De Leon is licensed to practice in Virginia (license number 0101268905) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1619362993.

Contact Information

Sylvia Casas De Leon, MD
1800 Town Center Dr Ste 317,
Reston, VA 20190-3239
(703) 437-3900
(703) 437-9426

Map and Direction




Physician's Profile

Full NameSylvia Casas De Leon
GenderFemale
SpecialityOphthalmology
Experience9 Years
Location1800 Town Center Dr Ste 317, Reston, Virginia
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Sylvia Casas De Leon attended and graduated from Baylor College Of Medicine in 2015
  NPI Data:
  • NPI Number: 1619362993
  • Provider Enumeration Date: 04/02/2015
  • Last Update Date: 05/15/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 4486988839
  • Enrollment ID: I20200729002522

Medical Identifiers

Medical identifiers for Sylvia Casas De Leon such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1619362993NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology 297778 (New York)Secondary
390200000XStudent In An Organized Health Care Education/training Program (* (Not Available))Secondary
207WX0120XOphthalmology - Cornea And External Diseases Specialist 0101268905 (Virginia)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Privia Medical Group Llc43856820611176

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. Sylvia Casas De Leon allows following entities to bill medicare on her behalf.
Entity NamePrivia Medical Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013042480
PECOS PAC ID: 4385682061
Enrollment ID: O20050422000298

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. Sylvia Casas De Leon 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
Sylvia Casas De Leon, MD
1800 Town Center Dr Ste 317,
Reston, VA 20190-3239

Ph: (703) 437-3900		Sylvia Casas De Leon, MD
1800 Town Center Dr Ste 317,
Reston, VA 20190-3239

Ph: (703) 437-3900

Reviews and Comments


Ophthalmology Doctors in Reston, VA

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Dr. David Kimkwong Chow, M.D.
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Dr. Shakeel R Shareef, M.D,
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Dr. Nisha Raman Patel, M.D.
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Phone: 703-834-9777    Fax: 703-834-8187
Kenneth Michael Karlin, M.D.
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Practice Location: 1800 Town Center Dr, Ste 317, Reston, VA 20190
Phone: 703-437-3900    Fax: 703-437-9426

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).

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