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WILLIAM WHITEHOUSE D.O.
NPI 1104121847
Internal Medicine in Greenville, SC

Active since January 11, 2011PECOS EnrolledAccepts Medicare Assignment
317 SAINT FRANCIS DR # 220B, GREENVILLE, SC 29601(864) 255-1304 Get Directions Write a Review

NPPES record last updated: November 3, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About William Whitehouse D.o. NPPES

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

WILLIAM WHITEHOUSE D.O. (NPI 1104121847) is an individual internal medicine provider in Greenville, South Carolina, licensed in South Carolina (36084) and active in the NPI registry since January 2011. He is enrolled in Medicare PECOS, is affiliated with St Francis-downtown, and is a graduate of Other (2010).

NPPES Registry Identity

NPI1104121847
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWILLIAM WHITEHOUSECredential: D.O.
Location Address317 SAINT FRANCIS DR # 220BGreenville, SC 29601-3965
Mailing Address317 Saint Francis Dr # 220bGreenville, SC 29601-3965 · (864) 255-1304
Phone(864) 255-1304
Sole ProprietorYes
Medical School CMSOtherGraduated 2010
Enumeration DateJanuary 11, 2011
Last NPPES UpdateNovember 3, 2025
NPPES CertifiedNovember 3, 2025
✔ NPI 1104121847 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in SC · 36084
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
317 SAINT FRANCIS DR # 220B, Greenville, SC 29601
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of North Carolina and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Whitehouse D.o. 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 ID4284878331
PECOS Enrollment IDI20130911000853
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.

Medicare Billing Reassignments

2

Medicare enrollment records show William Whitehouse reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bon Secours Medical Group Greenville Specialty Care LLC
0.1 mi
Cardiovascular Disease
1 SAINT FRANCIS DR
Greenville, SC 29601
  • Reassigned Medicare billing, South Carolina enrollment
  • 389 clinicians in this Medicare group
NPI 1821679580 (864) 603-6099
Hospital Physician Services - Southeast Professional Corporation
105 mi
Hospitalist
2151 W SPRING ST
Monroe, GA 30655
  • Reassigned Medicare billing, South Carolina enrollment
  • 311 clinicians in this Medicare group
NPI 1760410385 (770) 267-8461

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

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.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
112 services109 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
73 services70 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
44 services34 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
22 services22 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St Francis-Downtown

Acute Care Hospitals · Greenville, SC
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number420023
LocationOne St Francis DrGreenville, SC 29601 · Greenville County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29601 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
$124.04 typical visit price
range $53.57 – $163.84
Typical copayment $31.01 (range $13.39 – $40.96)
Most-billed visit code 99204
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.

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 William Whitehouse's NPI number?

The NPI number for William Whitehouse is 1104121847. It was assigned to this individual provider in the NPPES registry on January 11, 2011.

Where is William Whitehouse located?

William Whitehouse practices at 317 Saint Francis Dr # 220B, Greenville, SC 29601. The listed phone number is (864) 255-1304.

What is William Whitehouse's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is William Whitehouse enrolled in Medicare?

Yes. William Whitehouse 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.

Which organizations bill Medicare for William Whitehouse's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Whitehouse reassigns Medicare benefits to 2 organizations: Bon Secours Medical Group Greenville Specialty Care LLC (Greenville, SC) and Hospital Physician Services - Southeast Professional Corporation (Monroe, GA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Whitehouse's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Whitehouse accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, First Choice Next and Molina Healthcare list William Whitehouse 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.

Is William Whitehouse affiliated with any hospitals?

According to CMS data, William Whitehouse is affiliated with St Francis-Downtown.

When was this NPI record last updated?

The NPPES record for William Whitehouse was last updated on November 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.