Dr John Stephen Mulvahill, MD - Medicare Internal Medicine in Saint Louis, MO

Dr John Stephen Mulvahill, MD is a medicare enrolled "Internal Medicine" physician in Saint Louis, Missouri. He graduated from medical school in 2012 and has 12 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Mercy Clinic East Communities and his current practice location is 10024 Watson Rd, Saint Louis, Missouri. You can reach out to his office (for appointments etc.) via phone at (314) 919-2500.

Dr John Stephen Mulvahill is licensed to practice in Missouri (license number 2015016131) 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 1205195005.

Contact Information

Dr John Stephen Mulvahill, MD
10024 Watson Rd,
Saint Louis, MO 63126-1829
(314) 919-2500
(314) 919-2577

Map and Direction




Physician's Profile

Full NameDr John Stephen Mulvahill
GenderMale
SpecialityInternal Medicine
Experience12 Years
Location10024 Watson Rd, 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 John Stephen Mulvahill graduated from medical school in 2012
  NPI Data:
  • NPI Number: 1205195005
  • Provider Enumeration Date: 05/14/2012
  • Last Update Date: 07/21/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 3870890619
  • Enrollment ID: I20160322002826

Medical Identifiers

Medical identifiers for Dr John Stephen Mulvahill such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1205195005NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine BP10043107 (Texas)Secondary
207R00000XInternal Medicine P9234 (Texas)Secondary
207R00000XInternal Medicine 2015016131 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Home HealthSaint louis, MOHome health agency
Mercy Home HealthSaint louis, MOHome health agency
Mercy Hospital St LouisSaint louis, MOHospital
Mercy Hospital SouthSaint louis, MOHospital
Barnes Jewish HospitalSaint louis, MOHospital
Mercy Hospital WashingtonWashington, MOHospital
Missouri Baptist Medical CenterTown and country, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mercy Clinic East Communities7214827922499

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 John Stephen Mulvahill allows following entities to bill medicare on his behalf.
Entity NameMercy Clinic East Communities
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851335228
PECOS PAC ID: 7214827922
Enrollment ID: O20070521000006

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 John Stephen Mulvahill 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 John Stephen Mulvahill, MD
600 S. Euclid Ave, Campus Box 8303, Washington Univ School Of Medicine, Div Of Gesiatrics A,
Saint Louis, MO 63110

Ph: (314) 286-2971
Dr John Stephen Mulvahill, MD
10024 Watson Rd,
Saint Louis, MO 63126-1829

Ph: (314) 919-2500

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.