Dr. Gregory F. Hertwig
Anesthesiology (Anesthesiology Physician)
101 E Wood St
Spartanburg, SC 29303
Who else practices at this address →
Spartanburg County is a federal mental health shortage area. About shortage areas
- Medicare participating
At a glance
- Medical school
- University of South Carolina School of Medicine (2015)
- Years since graduation
- 11
- In the NPI registry since
- 2015
- Medicare patients seen, 2024
- 293
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2015Medical school: University of South Carolina School of Medicine
- 2015Registered with an NPI (national billing number; not a license date)
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Anesthesiology Physician primary
SC license 83883
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Spartanburg Medical Center Spartanburg, SC
- Pelham Medical Center Greer, SC
Medical groups
- Spartanburg Medical Center (1,078 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 293
- Services billed
- 475
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Ultrasonic guidance for blood vessel access | 72 | 64 |
| Insertion of artery tube for blood sampling or infusion through skin | 65 | 65 |
| Insertion of probe in esophagus for heart ultrasound | 32 | 32 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 22 | 22 |
| Injection of local anesthetic for abdominal wall pain control on both sides using imaging guidance | 17 | 17 |
| Anesthesia for x-ray on artery of brain, heart, or chest | 16 | 16 |
| Injection of anesthetic agent and/or steroid into rib nerve | 16 | 16 |
| Anesthesia for exam of colon using an endoscope | 15 | 15 |
| Anesthesia for other procedure on large bowel using an endoscope | 14 | 14 |
| Anesthesia for procedure to assess heart electrical activity | 14 | 14 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Payments from drug and device companies
In 2025, 2 companies reported 2 payments worth $53.29 in total to this clinician.
| Becton, Dickinson and Company | $34.13 |
|---|---|
| Merck Sharp & Dohme LLC | $19.16 |
| Food and Beverage | $53.29 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.