Mariastella Serrano, MD - Medicare Pediatric Medicine in Washington, DC

Mariastella Serrano, MD is a medicare enrolled "Pediatrics - Pediatric Gastroenterology" physician in Washington, District Of Columbia. She graduated from medical school in 1992 and has 32 years of diverse experience with area of expertise as Pediatric Medicine. She is a member of the group practice Mgmc Llc and her current practice location is 4200 Wisconsin Ave Nw Ste 400, Washington, District Of Columbia. You can reach out to her office (for appointments etc.) via phone at (202) 243-3558.

Mariastella Serrano is licensed to practice in District Of Columbia (license number MD045865) 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 1922080126.

Contact Information

Mariastella Serrano, MD
4200 Wisconsin Ave Nw Ste 400,
Washington, DC 20016-2100
(202) 243-3558
(877) 680-5504

Map and Direction




Physician's Profile

Full NameMariastella Serrano
GenderFemale
SpecialityPediatric Medicine
Experience32 Years
Location4200 Wisconsin Ave Nw Ste 400, Washington, District Of Columbia
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:
  • Mariastella Serrano graduated from medical school in 1992
  NPI Data:
  • NPI Number: 1922080126
  • Provider Enumeration Date: 11/15/2005
  • Last Update Date: 08/31/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6800828153
  • Enrollment ID: I20180312000091

Medical Identifiers

Medical identifiers for Mariastella Serrano such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1922080126NPI-NPPES
0435776MedicaidIA
1113905MedicaidLA
08172388MedicaidMS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2080P0206XPediatrics - Pediatric Gastroenterology MD045865 (District Of Columbia)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mgmc Llc9537073119385

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. Mariastella Serrano allows following entities to bill medicare on her behalf.
Entity NameMgmc Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891797148
PECOS PAC ID: 9537073119
Enrollment ID: O20031220000056

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. Mariastella Serrano 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
Mariastella Serrano, MD
4200 Wisconsin Ave Nw Ste 400,
Washington, DC 20016-2100

Ph: (202) 243-3558
Mariastella Serrano, MD
4200 Wisconsin Ave Nw Ste 400,
Washington, DC 20016-2100

Ph: (202) 243-3558

Reviews and Comments


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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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