Claire Katherine Horton, MD - Medicare Internal Medicine in Oakland, CA

Claire Katherine Horton, MD is a medicare enrolled "Internal Medicine" physician in Oakland, California. Her current practice location is 3451 E 12th Street, Oakland, California. You can reach out to her office (for appointments etc.) via phone at (510) 535-3500.

Claire Katherine Horton is licensed to practice in California (license number A71387) 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 1649374109.

Contact Information

Claire Katherine Horton, MD
3451 E 12th Street,
Oakland, CA 94601
(510) 535-3500
(510) 535-4187

Map and Direction




Physician's Profile

Full NameClaire Katherine Horton
GenderFemale
SpecialityInternal Medicine
Location3451 E 12th Street, Oakland, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1649374109
  • Provider Enumeration Date: 09/12/2006
  • Last Update Date: 12/18/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 0345211124
  • Enrollment ID: I20040804001247

Medical Identifiers

Medical identifiers for Claire Katherine Horton such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1649374109NPI-NPPES
FHC71021FMedicaidCA
HAP71021FOtherCAFPACT
ZZZ29799ZOtherCAFQHC MEDICARE PART B
55-1975OtherCAFQHC MEDICARE PART A

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A71387 (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. Claire Katherine Horton allows following entities to bill medicare on her behalf.
Entity NameUniversity Of California Sfgh Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154396208
PECOS PAC ID: 5496668410
Enrollment ID: O20031113000632
Entity NameCity & County Of San Francisco
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982737524
PECOS PAC ID: 1658280748
Enrollment ID: O20050309000770

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. Claire Katherine Horton 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
Claire Katherine Horton, MD
1601 Fruitvale Ave,
Oakland, CA 94601-2322

Ph: (510) 535-4000
Claire Katherine Horton, MD
3451 E 12th Street,
Oakland, CA 94601

Ph: (510) 535-3500

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.