Hallie St John Brown, MD - Medicare Internal Medicine in Stanford, CA

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Hallie St John Brown, MD is a medicare enrolled "Internal Medicine - Critical Care Medicine" physician in Stanford, California. Her current practice location is 300 Pasteur Dr, Stanford, California. You can reach out to her office (for appointments etc.) via phone at (650) 723-4000.

Hallie St John Brown is licensed to practice in California (license number A174029) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1447742812.

Contact Information

Hallie St John Brown, MD
300 Pasteur Dr,
Stanford, CA 94305-2200
(650) 723-4000
Not Available

Map and Direction




Physician's Profile

Full NameHallie St John Brown
GenderFemale
SpecialityInternal Medicine - Critical Care Medicine
Location300 Pasteur Dr, Stanford, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1447742812
  • Provider Enumeration Date: 06/01/2018
  • Last Update Date: 03/14/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 0143575472
  • Enrollment ID: I20230803001807

Medical Identifiers

Medical identifiers for Hallie St John Brown such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1447742812NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A174029 (California)Secondary
207RC0200XInternal Medicine - Critical Care Medicine A174029 (California)Primary

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. Hallie St John Brown allows following entities to bill medicare on her behalf.
Entity NameStanford Health Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437292927
PECOS PAC ID: 6709797491
Enrollment ID: O20031124000348
Entity NameLpch Medical Group Div Of Lucile
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417907940
PECOS PAC ID: 0840298543
Enrollment ID: O20061113000232

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. Hallie St John Brown 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
Hallie St John Brown, MD
300 Pasteur Dr,
Stanford, CA 94305-2200

Ph: (650) 723-4000		Hallie St John Brown, MD
300 Pasteur Dr,
Stanford, CA 94305-2200

Ph: (650) 723-4000

Reviews and Comments


Internal Medicine Doctors in Stanford, CA

Prista Charuworn, MD
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Medicare: Not Enrolled in Medicare
Practice Location: 300 Pasteur Dr, Alway Build M211, Mc 5187, Stanford, CA 94305
Phone: 650-723-6661    
Yu Kuang Lai, MD
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    
Andrea Lorenze, M.D.
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Drive, Lane 154, Stanford, CA 94305
Phone: 650-723-6661    Fax: 650-498-6205
Audra Horomanski, MD
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    Fax: 650-498-6205
Meghan Brady Marmor, MD
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    
Lauren Michelle Ulsh, MD
Critical Care Medicine
Medicare: Medicare Enrolled
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    
Ann M Chen, MD
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, A149, Mc5202, Stanford, CA 94305
Phone: 650-725-3376    Fax: 650-723-8305

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.