Michelle Ma, MD - Medicare Gastroenterology in Baltimore, MD

Michelle Ma, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Baltimore, Maryland. She went to University Of Michigan Medical School and graduated in 2013 and has 11 years of diverse experience with area of expertise as Gastroenterology. She is a member of the group practice Johns Hopkins University, Johns Hopkins University and her current practice location is 600 N Wolfe Street, Blalock 439, Baltimore, Maryland. You can reach out to her office (for appointments etc.) via phone at (410) 955-2636.

Michelle Ma is licensed to practice in Maryland (license number D87558) 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 1457796153.

Contact Information

Michelle Ma, MD
600 N Wolfe Street, Blalock 439,
Baltimore, MD 21287-0005
(410) 955-2636
(410) 614-8337

Map and Direction




Physician's Profile

Full NameMichelle Ma
GenderFemale
SpecialityGastroenterology
Experience11 Years
Location600 N Wolfe Street, Baltimore, Maryland
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:
  • Michelle Ma attended and graduated from University Of Michigan Medical School in 2013
  NPI Data:
  • NPI Number: 1457796153
  • Provider Enumeration Date: 05/08/2013
  • Last Update Date: 10/20/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 5991094138
  • Enrollment ID: I20191028002571

Medical Identifiers

Medical identifiers for Michelle Ma such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1457796153NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine MT203542 (Pennsylvania)Secondary
207RG0100XInternal Medicine - Gastroenterology D87558 (Maryland)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Johns Hopkins Bayview Medical CenterBaltimore, MDHospital
Johns Hopkins Hospital, TheBaltimore, MDHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Johns Hopkins University4981745098546
Johns Hopkins University89219031472656

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. Michelle Ma allows following entities to bill medicare on her behalf.
Entity NameJohns Hopkins University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1922008549
PECOS PAC ID: 8921903147
Enrollment ID: O20031215000719
Entity NameJohns Hopkins University
Entity TypePart B Supplier - Hospital Department(s)
Entity IdentifiersNPI Number: 1902332133
PECOS PAC ID: 4981745098
Enrollment ID: O20170818000085
Entity NameJohns Hopkins University
Entity TypePart B Supplier - Hospital Department(s)
Entity IdentifiersNPI Number: 1063917326
PECOS PAC ID: 4981745098
Enrollment ID: O20180530002514

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. Michelle Ma 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
Michelle Ma, MD
9910 Franklin Square Dr Ste 2110,
Baltimore, MD 21236-4902

Ph: (410) 933-6423
Michelle Ma, MD
600 N Wolfe Street, Blalock 439,
Baltimore, MD 21287-0005

Ph: (410) 955-2636

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).

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.