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ZACHARY THOMAS GRAMBOS M.D.
NPI 1225392624
Emergency Medicine in Columbia, SC

Active since June 29, 2012PECOS Enrolled
5 MEDICAL PARK, PHR - DEPT OF EM, COLUMBIA, SC 29203(803) 434-3790(803) 434-3946 Get Directions Write a Review

NPPES record last updated: June 29, 2012. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Zachary Thomas Grambos M.d. NPPES

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

ZACHARY THOMAS GRAMBOS M.D. (NPI 1225392624) is an individual emergency medicine provider in Columbia, South Carolina, licensed in South Carolina (LL34622) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1225392624
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameZACHARY THOMAS GRAMBOSCredential: M.D.
Location Address5 MEDICAL PARK, PHR - DEPT OF EMColumbia, SC 29203
Mailing Address5 Medical Park, Phr - Dept Of EmColumbia, SC 29203 · (803) 434-3790 · Fax (803) 434-3946
Phone(803) 434-3790
Fax(803) 434-3946
Sole ProprietorNo
Enumeration DateJune 29, 2012
✔ NPI 1225392624 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in SC · LL34622
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
5 MEDICAL PARK, Columbia, SC 29203
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health, Oscar Insurance Company.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Zachary Thomas Grambos M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Zachary Grambos reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Palmetto Health
Same address
Hospice and Palliative Medicine
7 MEDICAL PARK DRIVE, SUITE 7215
Columbia, SC 29203
  • Reassigned Medicare billing, South Carolina enrollment
  • Medicare enrollment name: Prisma Health-Midlands
  • 373 clinicians in this Medicare group
NPI 1164796306 (803) 434-2249
Middle Tennessee Emergency Physicians PC
358 mi
Emergency Medicine
2000 CHURCH STREET, EMERGENCY DEPT
Nashville, TN 37236
  • Reassigned Medicare billing, Tennessee enrollment
  • Medicare enrollment name: Middle Tennessee Emergency Physicians, P.C.
  • 225 clinicians in this Medicare group
NPI 1194758979 (615) 284-5555

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 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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
265 services260 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
163 services158 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
40 services40 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
27 services27 patients
Electrocardiogram (ecg) 1 to 3 leads with review by physician only 93042
An Electrocardiogram (ECG) is a non-invasive test that records the electrical activity of your heart. 1 to 3 leads or sensors are placed on your body to capture this data. A physician then reviews the results to evaluate your heart's health.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29203 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
$83.18 typical visit price
range $53.57 – $163.84
Typical copayment $20.79 (range $13.39 – $40.96)
Most-billed visit code 99203
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 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
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
TAMMY LYNNE WILLIAMSON
Nurse Anesthetist, Certified Registered
5 MEDICAL PARK, PALMETTO HEALTH RICHLAND
COLUMBIA, SC 29203
Richland County (803) 296-2548

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 Zachary Grambos's NPI number?

The NPI number for Zachary Grambos is 1225392624. It was assigned to this individual provider in the NPPES registry on June 29, 2012.

Where is Zachary Grambos located?

Zachary Grambos practices at 5 Medical Park Phr - Dept Of Em, Columbia, SC 29203. The listed phone number is (803) 434-3790.

What is Zachary Grambos's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Zachary Grambos enrolled in Medicare?

Yes. Zachary Grambos is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Zachary Grambos's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Zachary Grambos reassigns Medicare benefits to 2 organizations: Palmetto Health (Columbia, SC) and Middle Tennessee Emergency Physicians PC (Nashville, TN). 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 Zachary Grambos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Zachary Grambos accept?

Health plans from Oscar Health and Oscar Insurance Company list Zachary Grambos 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.

When was this NPI record last updated?

The NPPES record for Zachary Grambos was last updated on June 29, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.