Mary Katherine Gillingham, NP-C
Family Nurse Practitioner · Simpsonville, SC
Mary Katherine Gillingham, NP-C is a family nurse practitioner with a practice address in Simpsonville, South Carolina, and NPI 1154634061, issued on Jul 20, 2010. Check the license (South Carolina APN.4297 APRN, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Katherine Gillingham
- Credential
- NP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- APN.4297 APRN SC
51001 SC
Self-reported in NPPES; status is on the state search - Practice location
- 35 Ray E Talley CT, Simpsonville, SC 29680
- Phone
- (864) 967-7028
- Enumerated
- Jul 20, 2010
- Record last updated
- Oct 22, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (864) 228-0915
- Medicare enrollment
- Enrolled (PECOS I20110104000982); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,320 in South Carolina → Look up another NPI →
Also registered at 35 Ray E Talley CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Katherine Gillingham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Carolina board licenses this profession
Search for license APN.4297 APRNCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average family nurse practitioner in 2024
777 Medicare Part D claims for 476 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone121 claims
- Amoxicillin-Clavulanate Potass61 claims
- Cephalexin59 claims
- Doxycycline Hyclate57 claims
- Doxycycline Monohydrate48 claims
- Nitrofurantoin Mono-Macro41 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $16.52
1 payment: food and beverage; the largest payer was Pfizer Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bon Secours Ambulatory Services - St. Francis, LLCGreenville, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Katherine Gillingham among 4,320 family nurse practitioner records in South Carolina
Mary Katherine Gillingham, NP-C is one of 4,320 family nurse practitioner records with a practice address in South Carolina. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 16% of them.
- NPI issued2010 · 16% of these records are older, 82% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2010 · median 2018 among the 2,643 with a school on file
- Record last updated2018 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
70 family nurse practitioner records list a practice address in Simpsonville
They are 70 of the 1,142 NPPES records with a practice address in Simpsonville, and 4,320 family nurse practitioner records in South Carolina.
All 4,320 in South Carolina → Every provider in Simpsonville → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Ralph Baisden, FNPSimpsonville, SC 296801275634784
- Haley Blake, FNP-BCSimpsonville, SC 296801689928582
- Margaret Capucini, APRNSimpsonville, SC 296801255300539
- Melissa Dammann, ACNP, FNPSimpsonville, SC 296801366754012
- Dianne English, APRNSimpsonville, SC 296801073887709
- Donna Johnson, RN, MSN, APRN, NP-CSimpsonville, SC 296801588853956
- Kristin Jones, ARNPSimpsonville, SC 296801396034278
- Jennifer Knapp, DNP, FNP-CSimpsonville, SC 296801720497837
Common questions
What is Mary Katherine Gillingham, NP-C's NPI number?
Mary Katherine Gillingham, NP-C's National Provider Identifier (NPI) is 1154634061, issued on Jul 20, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mary Katherine Gillingham, NP-C located?
The NPPES record lists a practice address at 35 Ray E Talley CT, Simpsonville, SC, 29680. Phone: (864) 967-7028. Providers update this record themselves, so call before visiting.
How can I verify Mary Katherine Gillingham, NP-C's license?
NPPES lists South Carolina license number APN.4297 APRN, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Katherine Gillingham, NP-C prescribe under Medicare Part D?
In 2024, Mary Katherine Gillingham, NP-C had 777 Medicare Part D claims for 476 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.