1. Home
  2. Directory
  3. South Carolina
  4. Columbia
  5. Nurse Anesthetist Certified Registered
  6. NPI Profile

TAMMY LYNNE WILLIAMSON
NPI 1487611182
Nurse Anesthetist, Certified Registered in Columbia, SC

Active since April 27, 2006
5 MEDICAL PARK, PALMETTO HEALTH RICHLAND, COLUMBIA, SC 29203(803) 296-2548(803) 296-2548 Get Directions Write a Review

NPPES record last updated: January 27, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Tammy Lynne Williamson NPPES

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

TAMMY LYNNE WILLIAMSON (NPI 1487611182) is an individual nurse anesthetist, certified registered in Columbia, South Carolina, licensed in South Carolina (1645) and active in the NPI registry since April 2006. She maintains a secondary practice location in Greenville.

NPPES Registry Identity

NPI1487611182
Entity TypeIndividualFemale
Primary Taxonomy367500000X
Provider Legal NameTAMMY LYNNE WILLIAMSON
Location Address5 MEDICAL PARK, PALMETTO HEALTH RICHLANDColumbia, SC 29203
Mailing Address300 E Mcbee Ave Fl 4Greenville, SC 29601-2842 · (864) 522-8603
Phone(803) 296-2548
Fax(803) 296-2548
Sole ProprietorNo
Enumeration DateApril 27, 2006
Last NPPES UpdateJanuary 27, 2022
NPPES CertifiedJanuary 27, 2022
✔ NPI 1487611182 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
License✔ Licensed in SC · 1645
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
5 MEDICAL PARK, Columbia, SC 29203
Open in Google Maps ↗

Secondary Practice Location 1

Location 17 Independence Pt Ste 300Greenville, SC 29615-4569 · Phone (864) 522-3700

Other Identifiers 1

MedicaidAN1241SC

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tammy Lynne Williamson is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignments

5

Medicare enrollment records show Tammy Williamson reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Prisma Health-Midlands
0.1 mi
Nurse Anesthetist, Certified Registered
5 RICHLAND MEDICAL PARK DR
Columbia, SC 29203
  • Reassigned Medicare billing, South Carolina enrollment
  • 373 clinicians in this Medicare group
NPI 1003327792 (803) 296-2548
Prisma Health University Medical Group
0.2 mi
Anesthesiology
5 RICHLAND MEDICAL PARK DR
Columbia, SC 29203
  • Reassigned Medicare billing, South Carolina enrollment
  • 3,281 clinicians in this Medicare group
NPI 1679161483 (864) 522-8615
Midlands Anesthesia Company, LLC
28 mi
Nurse Anesthetist, Certified Registered
340 SUMTER HWY
Camden, SC 29020
  • Reassigned Medicare billing, South Carolina enrollment
  • 13 clinicians in this Medicare group
NPI 1710480280 (803) 243-1537
Beach Anesthesia, LLC
129 mi
Anesthesiology
1021 MEDICAL CIRCLE, SUITE 100
Myrtle Beach, SC 29572
  • Reassigned Medicare billing, South Carolina enrollment
  • 272 clinicians in this Medicare group
NPI 1215061429 (843) 692-1062
Medstream Anesthesia PLLC
907 mi
Anesthesiology
2221 LAKESIDE BLVD STE 600
Richardson, TX 75082
  • Reassigned Medicare billing, South Carolina enrollment
  • 553 clinicians in this Medicare group
NPI 1649616160 (828) 210-9386

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 3

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.

Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand 01810
Anesthesia for procedures on the forearm, wrist, and hand involves administering medication to block sensation in these areas. This helps ensure comfort and painlessness during surgeries or treatments involving nerves, muscles, tendons, and tissue in these regions.
19 services19 patients
Anesthesia for other procedure on forearm, wrist, or hand bones 01830
Anesthesia for procedures on forearm, wrist, or hand bones involves administering medications to block sensation in the specific area. It ensures you don't feel pain during the procedure. It can be local (numbing a small area) or regional (numbing a larger part of the body).
16 services16 patients
Anesthesia for other procedure on top of arm bone and shoulder joint 01630
Anesthesia for a procedure on the arm bone or shoulder joint involves using medication to numb the area or make you unconscious during surgery. This ensures you feel no pain during the procedure. It's a common and safe practice in medical surgeries.
15 services15 patients

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.

CATHERINE BENNET RHEA
Nurse Anesthetist, Certified Registered
5 MEDICAL PARK, PALMETTO HEALTH RICHLAND
COLUMBIA, SC 29203
Richland County (803) 296-2548
ASHLEY NICOLE GOOLSBY CRNA
Nurse Anesthetist, Certified Registered
5 MEDICAL PARK, PALMETTO HEALTH RICHLAND
COLUMBIA, SC 29203
Richland County (803) 296-2548
ALEX JORDAN WARREN M.D.
Emergency Medicine
5 MEDICAL PARK, PHR - DEPT OF EM
COLUMBIA, SC 29203
Richland County (803) 434-3790
MICHAEL ROSS HUGGINS
Nurse Anesthetist, Certified Registered
5 MEDICAL PARK, PALMETTO HEALTH RICHLAND
COLUMBIA, SC 29203
Richland County (803) 296-2548
ZACHARY THOMAS GRAMBOS M.D.
Emergency Medicine
5 MEDICAL PARK, PHR - DEPT OF EM
COLUMBIA, SC 29203
Richland County (803) 434-3790
VICTOR NORBERT ISKERSKY MD
Pediatrics (Neonatal-Perinatal Medicine)
5 MEDICAL PARK, PALMETTO HEALTH RICHLAND
COLUMBIA, SC 29203
Richland County (803) 434-7151
MICHAEL YVES LAROCHELLE M.D.
Emergency Medicine
5 MEDICAL PARK, PHR - DEPT OF EM
COLUMBIA, SC 29203
Richland County (803) 434-3790
ANNSLEY FOX
Emergency Medicine
5 MEDICAL PARK
COLUMBIA, SC 29203
Richland County (803) 434-3790

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 Tammy Williamson's NPI number?

The NPI number for Tammy Williamson is 1487611182. It was assigned to this individual provider in the NPPES registry on April 27, 2006.

Where is Tammy Williamson located?

Tammy Williamson practices at 5 Medical Park Palmetto Health Richland, Columbia, SC 29203. The listed phone number is (803) 296-2548.

What is Tammy Williamson's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Tammy Williamson enrolled in Medicare?

Yes. Tammy Williamson is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Tammy Williamson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Williamson reassigns Medicare benefits to 5 organizations: Prisma Health-Midlands (Columbia, SC), Prisma Health University Medical Group (Columbia, SC), Midlands Anesthesia Company, LLC (Camden, SC), Beach Anesthesia, LLC (Myrtle Beach, SC) and Medstream Anesthesia PLLC (Richardson, TX). 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 Tammy Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Tammy Williamson was last updated on January 27, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.