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DR. ALABA ABIODUN ONASANYA M.D
NPI 1891896031
Internal Medicine in Rock Hill, SC

Active since September 26, 2006PECOS EnrolledAccepts Medicare Assignment
1735 HECKLE BLVD UNIT M-S130, ROCK HILL, SC 29732(803) 659-3444 Get Directions Write a Review

NPPES record last updated: August 28, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 21, 2022, Mar 17, 2018, Jun 27, 2017 (3 updates tracked since 2017).

About Dr. Alaba Abiodun Onasanya M.d NPPES

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

DR. ALABA ABIODUN ONASANYA M.D (NPI 1891896031) is an individual internal medicine provider in Rock Hill, South Carolina, licensed in South Carolina (23264) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Piedmont Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1891896031
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. ALABA ABIODUN ONASANYACredential: M.D
Location Address1735 HECKLE BLVD UNIT M-S130Rock Hill, SC 29732-4803
Mailing AddressPo Box 740013Atlanta, GA 30374-0013 · (312) 733-9730
Phone(803) 659-3444
Sole ProprietorNo
Medical School CMSOtherGraduated 2002
Enumeration DateSeptember 26, 2006
Last NPPES UpdateAugust 28, 20253 updates tracked since enumeration
NPPES CertifiedAugust 28, 2025
✔ NPI 1891896031 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 · 23264
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.
1735 HECKLE BLVD UNIT M-S130, Rock Hill, SC 29732
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Secondary Practice Locations 2

Location 1205 Piedmont BlvdRock Hill, SC 29732-1836 · Phone (803) 366-4848 · Fax (803) 325-9500
Location 22670 Mills Park DrRock Hill, SC 29732-8599 · Phone (803) 366-4848

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

Dr. Alaba Abiodun Onasanya 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 ID1658326954
PECOS Enrollment IDI20251125004287
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 Reassignment

Medicare enrollment records show Alaba Onasanya reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Oak Street Health Physicians Group Of South Carolina, LLC
79 mi
Primary Care
6119 WHITE HORSE RD STE 14
Greenville, SC 29611
  • Reassigned Medicare billing, South Carolina enrollment
  • 40 clinicians in this Medicare group
NPI 1023614914 (312) 733-9730

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

Hospital Affiliations CMS Care Compare

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

Piedmont Medical Center

Acute Care Hospitals · Rock Hill, SC
2/5 CMS rating
OwnershipProprietary
CMS Certification Number420002
Location1731 Frank Gaston BlvdRock Hill, SC 29732 · York County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29732 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.

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.

ANGELA RENEE BERRY ANP
Nurse Practitioner
1735 HECKLE BLVD UNIT M-S130
ROCK HILL, SC 29732
York County (803) 659-3444
KARLA LUNDY NP
Nurse Practitioner (Family)
1735 HECKLE BLVD UNIT M-S130
ROCK HILL, SC 29732
York County (803) 659-3444
ALANA JONES
Nurse Practitioner
1735 HECKLE BLVD UNIT M-S130
ROCK HILL, SC 29732
York County (803) 659-3444

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 Alaba Onasanya's NPI number?

The NPI number for Alaba Onasanya is 1891896031. It was assigned to this individual provider in the NPPES registry on September 26, 2006.

Where is Alaba Onasanya located?

Alaba Onasanya practices at 1735 Heckle Blvd Unit M-S130, Rock Hill, SC 29732. The listed phone number is (803) 659-3444.

What is Alaba Onasanya's specialty?

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

Is Alaba Onasanya enrolled in Medicare?

Yes. Alaba Onasanya 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 organization bills Medicare for Alaba Onasanya's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alaba Onasanya reassigns Medicare benefits to Oak Street Health Physicians Group Of South Carolina, LLC (Greenville, SC). The 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 Alaba Onasanya's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Alaba Onasanya affiliated with any hospitals?

According to CMS data, Alaba Onasanya is affiliated with Piedmont Medical Center.

When was this NPI record last updated?

The NPPES record for Alaba Onasanya was last updated on August 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.