Dr Charles Ma, MD - Medicare Internal Medicine in Saint Louis, MO

Dr Charles Ma, MD is a medicare enrolled "Internal Medicine" physician in Saint Louis, Missouri. He went to Saint Louis University School Of Medicine and graduated in 2017 and has 7 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice South Sound Inpatient Physicians Pllc and his current practice location is 621 S New Ballas Rd Ste 112a, Saint Louis, Missouri. You can reach out to his office (for appointments etc.) via phone at (314) 251-6339.

Dr Charles Ma is licensed to practice in Missouri (license number 2020012190) 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 1205377579.

Contact Information

Dr Charles Ma, MD
621 S New Ballas Rd Ste 112a,
Saint Louis, MO 63141-8252
(314) 251-6339
(314) 251-4564

Map and Direction




Physician's Profile

Full NameDr Charles Ma
GenderMale
SpecialityInternal Medicine
Experience7 Years
Location621 S New Ballas Rd Ste 112a, Saint Louis, Missouri
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:
  • Dr Charles Ma attended and graduated from Saint Louis University School Of Medicine in 2017
  NPI Data:
  • NPI Number: 1205377579
  • Provider Enumeration Date: 03/20/2017
  • Last Update Date: 08/05/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 0143598037
  • Enrollment ID: I20210507001852

Medical Identifiers

Medical identifiers for Dr Charles Ma such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1205377579NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 2020012190 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Tacoma General Allenmore HospitalTacoma, WAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
South Sound Inpatient Physicians Pllc5991618738302

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. Dr Charles Ma allows following entities to bill medicare on his behalf.
Entity NameSouth Sound Inpatient Physicians Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023285756
PECOS PAC ID: 5991618738
Enrollment ID: O20031107000668
Entity NameKing County Public Hospital District No 2
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801986070
PECOS PAC ID: 7618880097
Enrollment ID: O20031111000557
Entity NameKaiser Foundation Health Plan Of Washington
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396810701
PECOS PAC ID: 9032022579
Enrollment ID: O20031112000454
Entity NameSwedish Health Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689612954
PECOS PAC ID: 0244138196
Enrollment ID: O20031230000187
Entity NameCogent Healthcare Of Washington, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861430522
PECOS PAC ID: 2062306350
Enrollment ID: O20040209000839

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. Dr Charles 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
Dr Charles Ma, MD
621 S New Ballas Rd Ste 112a,
Saint Louis, MO 63141-8252

Ph: (314) 251-6339
Dr Charles Ma, MD
621 S New Ballas Rd Ste 112a,
Saint Louis, MO 63141-8252

Ph: (314) 251-6339

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.