KATHERINE KELLY HERTWIG CRNA
NPI 1598805186
Nurse Anesthetist, Certified Registered in Spartanburg, SC

Q: What is Katherine Hertwig's NPI number?

The NPI number for Katherine Hertwig is 1598805186. It was assigned to this individual provider in the NPPES registry on February 6, 2007. The provider is also known as Katherine Michelle Kelly Crna.

Q: What is Katherine Hertwig's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Katherine Hertwig was last updated on July 28, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since February 06, 2007Accepts Medicare Assignment

101 E WOOD ST, SPARTANBURG, SC 29303(864) 560-6122(864) 560-6276 Get Directions Write a Review

NPPES record last updated: July 28, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 28, 2020, Mar 18, 2019 (2 updates tracked since 2019).

On this page

About Katherine Kelly Hertwig Crna NPPES

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

KATHERINE KELLY HERTWIG CRNA (NPI 1598805186) is an individual nurse anesthetist, certified registered in Spartanburg, South Carolina, licensed in South Carolina (3234) and active in the NPI registry since February 2007. She is affiliated with Spartanburg Medical Center, maintains a secondary practice location in Greenville, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1598805186

Entity TypeIndividualFemale

Primary Taxonomy367500000X

Provider Legal NameKATHERINE KELLY HERTWIGCredential: CRNA

Location Address101 E WOOD STSpartanburg, SC 29303-3040

Mailing AddressPo Box 277723Atlanta, GA 30384-7723

Phone(864) 560-6122

Fax(864) 560-6276

Sole ProprietorNo

Medical School CMSOtherGraduated 2007

Enumeration DateFebruary 6, 2007

Last NPPES UpdateJuly 28, 20202 updates tracked since enumeration

NPPES CertifiedJuly 28, 2020

✔ NPI 1598805186 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

Licenses✔ Licensed in SC · 3234✔ Licensed in NC · 77491

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.

101 E WOOD ST, Spartanburg, SC 29303

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Other Names 1

Former Name (1)Katherine Michelle Kelly Crna

Secondary Practice Location 1

Location 11 Saint Francis DrGreenville, SC 29601-3955 · Phone (864) 255-1000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of North Carolina.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

Katherine Kelly Hertwig Crna 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 ID345349569

PECOS Enrollment IDI20070628000148

Medicare Billing Reassignments

Medicare enrollment records show Katherine Hertwig reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Spartanburg Medical Center

Same address

Diagnostic Radiology

101 E WOOD ST
Spartanburg, SC 29303

Reassigned Medicare billing, South Carolina enrollment
Also billed through NPI 1326373697 (South Carolina), NPI 1124431465 (South Carolina)
754 clinicians in this Medicare group

NPI 1144080227 (864) 560-6522

Pelham Medical Center

17 mi

Cardiovascular Disease

250 WESTMORELAND RD
Greer, SC 29651

Reassigned Medicare billing, South Carolina enrollment
179 clinicians in this Medicare group

NPI 1962644773 (864) 530-2108

St Francis Hospital Inc

23 mi

General Acute Care Hospital

125 COMMONWEALTH DR
Greenville, SC 29615

Reassigned Medicare billing, South Carolina enrollment
191 clinicians in this Medicare group

NPI 1497796296 (864) 675-4000

Palmetto Anesthesia Associates

29 mi

Anesthesiology

1 SAINT FRANCIS DR
Greenville, SC 29601

Reassigned Medicare billing, South Carolina enrollment
123 clinicians in this Medicare group

NPI 1750336079 (864) 848-9555

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 2

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 other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

16 services16 patients

Anesthesia for lens surgery 00142

Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.

15 services15 patients

Hospital Affiliations CMS Care Compare 2

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

St Francis-Downtown

Acute Care Hospitals · Greenville, SC

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number420023

LocationOne St Francis DrGreenville, SC 29601 · Greenville County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29303 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

$67.12 typical visit price

range $16.96 – $133.52

Typical copayment $16.78 (range $4.24 – $33.38)

Most-billed visit code 99213

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.

DR. TONDRE BUCK M.D.

Internal Medicine (Hematology & Oncology)

101 E WOOD ST
SPARTANBURG, SC 29303

Spartanburg County (864) 560-7050

ADAM KEITH RAYNES

Nurse Anesthetist, Certified Registered

101 E WOOD ST
SPARTANBURG, SC 29303

Spartanburg County (864) 560-6000

RAJAN BHATT

Student in an Organized Health Care Education/Training Program

101 E WOOD ST
SPARTANBURG, SC 29303

Spartanburg County (864) 560-6285

NICHOLE TACKETT DO

Surgery

101 E WOOD ST
SPARTANBURG, SC 29303

Spartanburg County (864) 560-6285

PATRICIA C. GRIFFIN MD

Radiology (Radiation Oncology)

101 E WOOD ST
SPARTANBURG, SC 29303

Spartanburg County (864) 560-6917

DR. VIKAS DEMBLA M.D.

Internal Medicine (Hematology & Oncology)

101 E WOOD ST
SPARTANBURG, SC 29303

Spartanburg County (864) 560-7050

DR. ANDREW OMOIT EKATAN M.D.

Internal Medicine

101 E WOOD ST, SUITE 401
SPARTANBURG, SC 29303

Spartanburg County (864) 560-6654

STETSON REED BICKLEY M.D.

Radiology (Diagnostic Radiology)

101 E WOOD ST
SPARTANBURG, SC 29303

Spartanburg County (864) 560-6522

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 Katherine Hertwig's NPI number?

The NPI number for Katherine Hertwig is 1598805186. It was assigned to this individual provider in the NPPES registry on February 6, 2007. The provider is also known as Katherine Michelle Kelly Crna.

Where is Katherine Hertwig located?

Katherine Hertwig practices at 101 E Wood St, Spartanburg, SC 29303. The listed phone number is (864) 560-6122.

What is Katherine Hertwig's specialty?

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

Is Katherine Hertwig enrolled in Medicare?

Yes. Katherine Hertwig 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 Katherine Hertwig's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Hertwig reassigns Medicare benefits to 4 organizations: Spartanburg Medical Center (Spartanburg, SC), Pelham Medical Center (Greer, SC), St Francis Hospital Inc (Greenville, SC) and Palmetto Anesthesia Associates (Greenville, SC). 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 Katherine Hertwig's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Katherine Hertwig accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care and Ambetter of North Carolina list Katherine Hertwig 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 Katherine Hertwig affiliated with any hospitals?

According to CMS data, Katherine Hertwig is affiliated with Spartanburg Medical Center and St Francis-Downtown.

When was this NPI record last updated?

The NPPES record for Katherine Hertwig was last updated on July 28, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.