DR. WILLIAM ELIJAH CHASTAIN MD
NPI 1891980777
Hospitalist in Greenville, SC
About Dr. William Elijah Chastain Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM ELIJAH CHASTAIN MD (NPI 1891980777) is an individual hospitalist provider in Greenville, South Carolina, licensed in North Carolina (2020-02273) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS, is affiliated with Ochsner Medical Center Acute, and maintains 5 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Secondary Practice Locations 5
Accepted 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
Dr. William Elijah Chastain Md 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.
Areas of Expertise CMS Part B claims 5
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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ochsner Medical Center Acute
Acute Care Hospitals · New Orleans, LAMaine Medical Center
Acute Care Hospitals · Portland, MEEssentia Health St Joseph's Medical Center
Acute Care Hospitals · Brainerd, MNSpartanburg Medical Center
Acute Care Hospitals · Spartanburg, SCGrand Strand Regional Medical Center
Acute Care Hospitals · Myrtle Beach, SCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 29605 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Chastain's NPI number?
The NPI number for William Chastain is 1891980777. It was assigned to this individual provider in the NPPES registry on September 13, 2007.
Where is William Chastain located?
William Chastain practices at 701 Grove Rd Fl 5, Greenville, SC 29605. The listed phone number is (864) 455-4411.
What is William Chastain's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is William Chastain enrolled in Medicare?
Yes. William Chastain 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 William Chastain accept?
Health plans from Medica, Oscar Health Maintenance Organization of Florida, Oscar Health Plan of North Carolina, Inc and Oscar Insurance Company list William Chastain 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 Chastain affiliated with any hospitals?
According to CMS data, William Chastain is affiliated with Ochsner Medical Center Acute, Maine Medical Center, Essentia Health St Joseph's Medical Center, Spartanburg Medical Center and Grand Strand Regional Medical Center.
When was this NPI record last updated?
The NPPES record for William Chastain was last updated on June 30, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.
