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ADAM MARCUS SEBASI M.D.
NPI 1265896278
Hospitalist in Sumter, SC

Active since April 06, 2016PECOS EnrolledAccepts Medicare Assignment
96.08/100
CMS Quality Rating
129 N WASHINGTON ST, SUMTER, SC 29150(803) 434-6771(803) 434-3955 Get Directions Write a Review

NPPES record last updated: June 11, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 3, 2025, Mar 7, 2022, Sep 18, 2021 and 1 more (4 updates tracked since 2019).

About Adam Marcus Sebasi M.d. NPPES

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

ADAM MARCUS SEBASI M.D. (NPI 1265896278) is an individual hospitalist provider in Sumter, South Carolina, licensed in South Carolina (83851) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Spartanburg Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1265896278
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameADAM MARCUS SEBASICredential: M.D.
Location Address129 N WASHINGTON STSumter, SC 29150-4949
Mailing Address300 E Mcbee Ave Fl 4Greenville, SC 29601-2842
Phone(803) 434-6771
Fax(803) 434-3955
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateApril 6, 2016
Last NPPES UpdateJune 11, 20264 updates tracked since enumeration
NPPES CertifiedJune 11, 2026
✔ NPI 1265896278 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in SC · 83851
Definition
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.
Also ListedInternal MedicineTaxonomy 207R00000X · License 43404 (AL), 71333 (WI), 85660 (GA)
129 N WASHINGTON ST, Sumter, SC 29150
Open in Google Maps ↗

Other Names 1

Other Name (5)Hatem M Sabassi

Secondary Practice Locations 2

Location 13801 Spring StMount Pleasant, WI 53405-1667 · Phone (765) 747-4306
Location 2400 E 10th StAnniston, AL 36207-4716 · Phone (256) 235-5121

Other Identifiers 1

Medicaid838516SC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Alabama, UnitedHealthcare.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

Adam Marcus Sebasi 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 ID9335432202
PECOS Enrollment IDI20200904001743, I20251117003606, I20251217000162
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

7

Medicare enrollment records show Adam Sebasi reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

24 On Physicians Of Sc, LLC
81 mi
Hospitalist
316 CALHOUN ST
Charleston, SC 29401
  • Reassigned Medicare billing, South Carolina enrollment
  • 281 clinicians in this Medicare group
NPI 1144877655 (800) 923-2247
Spartanburg Medical Center
83 mi
Internal Medicine
166 MAIN ST
Whitmire, SC 29178
  • Reassigned Medicare billing, South Carolina enrollment
  • 754 clinicians in this Medicare group
NPI 1699150995 (864) 560-6563
Pelham Medical Center
125 mi
Internal Medicine
250 WESTMORELAND RD
Greer, SC 29651
  • Reassigned Medicare billing, South Carolina enrollment
  • 313 clinicians in this Medicare group
NPI 1245496983 (864) 560-6619
Georgia Hospital Medicine Physicians LLC
241 mi
Hospitalist
801 W GORDON ST
Thomaston, GA 30286
  • Reassigned Medicare billing, Georgia enrollment
  • 34 clinicians in this Medicare group
NPI 1164371415 (337) 581-6920
Alabama Hospital Medicine Physicians LLC
316 mi
Hospitalist
400 E 10TH ST
Anniston, AL 36207
  • Reassigned Medicare billing, Alabama enrollment
  • 21 clinicians in this Medicare group
NPI 1790667335 (337) 581-6920
Green Valley Hospital Medicine Physicians, LLC
515 mi
Internal Medicine
1530 LONE OAK RD
Paducah, KY 42003
  • Reassigned Medicare billing, Kentucky enrollment
  • 50 clinicians in this Medicare group
NPI 1215604236 (271) 444-2444
Ascension Medical Group-Southeast Wisconsin Inc
751 mi
Anesthesiology
2301 N LAKE DR
Milwaukee, WI 53211
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,343 clinicians in this Medicare group
NPI 1194473066 (414) 585-1000

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.

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.
278 services108 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
74 services74 patients
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.
17 services17 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
11 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Spartanburg Medical Center

Acute Care Hospitals · Spartanburg, SC
2/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number420007
Location101 E Wood StSpartanburg, SC 29303 · Spartanburg County
Emergency services Birthing friendly

Cherokee Medical Center

Acute Care Hospitals · Gaffney, SC
2/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number420043
Location1530 N Limestone StGaffney, SC 29340 · Cherokee County
Emergency services

Pelham Medical Center

Acute Care Hospitals · Greer, SC
4/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number420103
Location250 Westmoreland RoadGreer, SC 29651 · Greenville County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29150 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.

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.

96.08/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality92.17
Promoting Interoperability100
Improvement Activities40

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.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers12 claims13 services$18.38 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers13 claims14 services$97.11 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 20

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

DR. TERRY ANTHONY GODFREY M.D.
Hospitalist
129 N WASHINGTON ST
SUMTER, SC 29150
Sumter County (803) 774-9680
MR. JOHNNY RAYMON CHAPPELL CRNA
Nurse Anesthetist, Certified Registered
129 N WASHINGTON ST
SUMTER, SC 29150
Sumter County (803) 778-9500
DR. GARRETT M CLANTON II MD
Emergency Medicine
129 N WASHINGTON ST
SUMTER, SC 29150
Sumter County (803) 774-9111
GOPALBHAI KANIJIBHAI VAGHELA MD
Hospitalist
129 N WASHINGTON ST
SUMTER, SC 29150
Sumter County (803) 774-9680
FRITZ E JEAN GILLES M.D.
Internal Medicine
129 N WASHINGTON ST
SUMTER, SC 29150
Sumter County (803) 774-9680
TUOMEY
Emergency Medicine
129 N WASHINGTON ST
SUMTER, SC 29150
Sumter County (803) 774-5279
TUOMEY
General Acute Care Hospital
129 N WASHINGTON ST
SUMTER, SC 29150
Sumter County (803) 774-9000
CHAYE HERTZEL MD
Family Medicine
129 N WASHINGTON ST
SUMTER, SC 29150
Sumter County (803) 774-9680

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 Adam Sebasi's NPI number?

The NPI number for Adam Sebasi is 1265896278. It was assigned to this individual provider in the NPPES registry on April 6, 2016. The provider is also known as Hatem M Sabassi.

Where is Adam Sebasi located?

Adam Sebasi practices at 129 N Washington St, Sumter, SC 29150. The listed phone number is (803) 434-6771.

What is Adam Sebasi's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Adam Sebasi enrolled in Medicare?

Yes. Adam Sebasi 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 Adam Sebasi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Adam Sebasi reassigns Medicare benefits to 7 organizations: 24 On Physicians Of Sc, LLC (Charleston, SC), Spartanburg Medical Center (Whitmire, SC), Pelham Medical Center (Greer, SC), Georgia Hospital Medicine Physicians LLC (Thomaston, GA), Alabama Hospital Medicine Physicians LLC (Anniston, AL) and 2 more organizations, listed in the Medicare section above. 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 Adam Sebasi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Adam Sebasi accept?

Health plans from Blue Cross and Blue Shield of Alabama and UnitedHealthcare list Adam Sebasi 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 Adam Sebasi affiliated with any hospitals?

According to CMS data, Adam Sebasi is affiliated with Spartanburg Medical Center, Cherokee Medical Center and Pelham Medical Center.

When was this NPI record last updated?

The NPPES record for Adam Sebasi was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.