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KEITH ALEXANDER GUEST M.D.
NPI 1285630020
Internal Medicine - Geriatric Medicine in Lexington, SC

Active since June 27, 2005PECOS EnrolledAccepts Medicare Assignment
64.71/100
CMS Quality Rating
PO BOX 487, LEXINGTON, SC 29071(803) 699-9073(866) 527-0937 Get Directions Write a Review

NPPES record last updated: July 21, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Keith Alexander Guest M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KEITH ALEXANDER GUEST M.D. (NPI 1285630020) is an individual geriatric medicine provider in Lexington, South Carolina, licensed in South Carolina (20934) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS and is a graduate of University Of South Carolina School Of Medicine (1996).

NPPES Registry Identity

NPI1285630020
Entity TypeIndividualMale
Primary Taxonomy207RG0300X
Provider Legal NameKEITH ALEXANDER GUESTCredential: M.D.
Location AddressPO BOX 487Lexington, SC 29071-0487
Mailing AddressPo Box 487Lexington, SC 29071-0487 · (803) 699-9073 · Fax (866) 527-0937
Phone(803) 699-9073
Fax(866) 527-0937
Sole ProprietorNo
Medical School CMSUniversity Of South Carolina School Of MedicineGraduated 1996
Enumeration DateJune 27, 2005
Last NPPES UpdateJuly 21, 2025
NPPES CertifiedJuly 21, 2025
✔ NPI 1285630020 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
License✔ Licensed in SC · 20934
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
Also ListedInternal Medicine · Hospice and Palliative MedicineTaxonomy 207RH0002X · License 20934 (SC)
PO BOX 487, Lexington, SC 29071
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Other Identifiers 2

MedicaidGP2916SC
Other380001558SC · Railroad Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BlueCross BlueShield of South Carolina.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Keith Alexander Guest M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6608771977
PECOS Enrollment IDI20101019001295
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 99349
An established patient home visit is a medical appointment conducted at your home, typically lasting around 40 minutes. This service is ideal for patients who may find it difficult to travel to a healthcare facility. During this visit, a healthcare professional will evaluate your health status, manage your care, and answer any health-related questions you may have.
276 services120 patients
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes 99348
An established patient home visit is a 25-minute appointment where a healthcare provider visits you at your home. This service is for patients who have previously been seen by the provider. It includes a check-up and discussion about your health concerns.
93 services57 patients
Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes 99350
An established patient home visit is a service where a healthcare professional visits a patient's home for a check-up or treatment. The visit typically lasts for about an hour. This service is especially beneficial for patients who may have difficulty traveling to a healthcare facility.
79 services55 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
57 services18 patients
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180
This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.
46 services44 patients
Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes 99345
A new patient home visit is a comprehensive 75-minute appointment conducted at your home. The healthcare professional will assess your health, discuss any concerns, and create a personalized care plan. It's convenient, comfortable, and tailored to your specific needs.
40 services40 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29071 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$163.84 typical visit price
range $53.57 – $163.84
Typical copayment $40.96 (range $13.39 – $40.96)
Most-billed visit code 99205
Established Patient
$95.12 typical visit price
range $16.96 – $133.52
Typical copayment $23.78 (range $4.24 – $33.38)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

64.71/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality61.32
Improvement Activities40
Cost19.12

Referred Medical Equipment & Supplies CMS DME claims 15

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Insertion tray with drainage bag with indwelling catheter, foley type, two-way latex with coating (teflon, silicone, silicone elastomer or hydrophilic, etc.) A4314
DME-Orthotic Devices · category DF000N
2 suppliers15 claims15 services$22.78 avg. paid by Medicare
Urinary catheter anchoring device, adhesive skin attachment, each A4333
DME-Orthotic Devices · category DF000N
2 suppliers14 claims123 services$1.93 avg. paid by Medicare
Urinary catheter anchoring device, leg strap, each A4334
DME-Orthotic Devices · category DF000N
1 supplier12 claims12 services$4.36 avg. paid by Medicare
Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357
DME-Orthotic Devices · category DF000N
3 suppliers24 claims47 services$8.97 avg. paid by Medicare
Ostomy pouch, drainable; for use on barrier with flange (2 piece system), each A5063
DME-Orthotic Devices · category DF010N
2 suppliers11 claims272 services$2.62 avg. paid by Medicare
Collagen based wound filler, dry form, sterile, per gram of collagen A6010
DME-Medical/Surgical Supplies · category DA023N
2 suppliers15 claims442 services$29.85 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARISSA MITTER
Physician Assistant
PO BOX 487
LEXINGTON, SC 29071
Lexington County (803) 699-9073
DAVID T MILLER G.N.P.
Nurse Practitioner (Gerontology)
PO BOX 487
LEXINGTON, SC 29071
Lexington County (803) 699-9073
DR. MATTHEW W. CUSANO M.D.
Internal Medicine
PO BOX 487
LEXINGTON, SC 29071
Lexington County (803) 699-9073

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Keith Guest's NPI number?

The NPI number for Keith Guest is 1285630020. It was assigned to this individual provider in the NPPES registry on June 27, 2005.

Where is Keith Guest located?

Keith Guest practices at PO Box 487, Lexington, SC 29071. The listed phone number is (803) 699-9073.

What is Keith Guest's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Keith Guest enrolled in Medicare?

Yes. Keith Guest is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Keith Guest accept?

Health plans from BlueCross BlueShield of South Carolina list Keith Guest as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Keith Guest was last updated on July 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.