Keith Alexander Guest, MD - Medicare Geriatric Medicine in Lexington, SC

Keith Alexander Guest, MD is a medicare enrolled "Internal Medicine - Geriatric Medicine" physician in Lexington, South Carolina. He went to University Of South Carolina School Of Medicine and graduated in 1996 and has 30 years of diverse experience with area of expertise as Geriatric Medicine. He is a member of the group practice Senior Health Associates, Pa and his current practice location is Po Box 487, Lexington, South Carolina. You can reach out to his office (for appointments etc.) via phone at (803) 699-9073.

Keith Alexander Guest is licensed to practice in South Carolina (license number 20934) 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 1285630020.

Contact Information

Keith Alexander Guest, MD
Po Box 487,
Lexington, SC 29071-0487
(803) 699-9073
(866) 527-0937

Map and Direction




Physician's Profile

Full NameKeith Alexander Guest
GenderMale
SpecialityGeriatric Medicine
Experience30 Years
LocationPo Box 487, Lexington, South Carolina
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:
  • Keith Alexander Guest attended and graduated from University Of South Carolina School Of Medicine in 1996
  NPI Data:
  • NPI Number: 1285630020
  • Provider Enumeration Date: 06/27/2005
  • Last Update Date: 07/21/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 6608771977
  • Enrollment ID: I20101019001295

Medical Identifiers

Medical identifiers for Keith Alexander Guest such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1285630020NPI-NPPES
GP2916MedicaidSC
380001558OtherSCRAILROAD MEDICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0002XInternal Medicine - Hospice And Palliative Medicine 20934 (South Carolina)Secondary
207RG0300XInternal Medicine - Geriatric Medicine 20934 (South Carolina)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Amedisys Home Health Of BlufftonBluffton, SCHome health agency

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Senior Health Associates, Pa62047398819

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. Keith Alexander Guest allows following entities to bill medicare on his behalf.
Entity NameSenior Health Associates, Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023155728
PECOS PAC ID: 6204739881
Enrollment ID: O20040130000360

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. Keith Alexander Guest 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
Keith Alexander Guest, MD
Po Box 487,
Lexington, SC 29071-0487

Ph: (803) 699-9073
Keith Alexander Guest, MD
Po Box 487,
Lexington, SC 29071-0487

Ph: (803) 699-9073

Reviews and Comments


Internal Medicine Doctors in Lexington, SC

Dr. Richard P Murray, MD
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 103 Thompson St Ste 200, Lexington, SC 29072
Phone: 803-796-7270    Fax: 803-796-0106
Hailley Oxner Story, MD
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 5336 Sunset Blvd Ste A, Lexington, SC 29072
Phone: 803-567-8900    Fax: 803-567-8909
Michele L Spero, MD
Geriatric Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 719 S Lake Dr, Lexington, SC 29072
Phone: 803-957-8000    Fax: 803-957-9025
Himadri Dasgupta, MD
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 108 Palmetto Park Blvd Ste C, Lexington, SC 29072
Phone: 803-356-0949    Fax: 803-356-1795
Dr. Gilbert L Rogers, MD
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 103 Thompson St Ste 200, Lexington, SC 29072
Phone: 803-796-7270    Fax: 803-796-0106
Dr. Sarah Ann Hill Wells, MD
Geriatric Medicine
Medicare: Medicare Enrolled
Practice Location: 1205 Old Cherokee Rd, Medmission At Mt. Horeb Umc, Lexington, SC 29072
Phone: 803-931-2168    

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.