NPPES file of Aug 9, 2026

Katheryn Dixon Isham, M.D.

Obstetrics & Gynecology Physician · Greenville, SC

Katheryn Dixon Isham, M.D. is an obstetrics & gynecology physician with a practice address in Greenville, South Carolina, and NPI 1871887877, issued on Jun 7, 2011. Check the license (South Carolina 33613, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1871887877
Name
Katheryn Dixon Isham
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
33613 SC
Self-reported in NPPES; status is on the state search
Practice location
101 Halton Village Cir, Greenville, SC 29607
Phone
(864) 455-1600
Enumerated
Jun 7, 2011
Record last updated
May 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicaid ID
336130 SC
Medicare enrollment
Enrolled (PECOS I20150825005696); accepts Medicare assignment
Medical or professional school
Emory University School Of Medicine, 2011
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 101 Halton Village Cir

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Callie Banks, WHNP-BCWomen's Health Nurse Practitioner1629704085
  2. Jill Boland, M.D.Maternal & Fetal Medicine Physician1447488317
  3. Jonathan Gleason, MDUrogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician1780749820
  4. Dianna Gurich, M.D.Obstetrics & Gynecology Physician1326300211
  5. Allison Jackson, M.D.Obstetrics & Gynecology Physician1194929588
  6. Rachael Mazzamurro, MDObstetrics & Gynecology Physician1235692450

Verify Katheryn Dixon Isham in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
    Search for license 33613
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the South Carolina license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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33% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024

219 Medicare Part D claims for 45 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.

  1. Katheryn Isham219
  2. Specialty average165

Most prescribed

  1. Estradiol42 claims
  2. Estradiol (Once Weekly)24 claims
  3. Estradiol (Twice Weekly)18 claims
  4. Progesterone18 claims
  5. Premarin14 claims
  6. Yuvafem13 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: $34.66

2 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Katheryn Isham$34.66
  2. Specialty average$1,030.61

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

  1. Prisma Health University Medical GroupGreenville, SC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katheryn Dixon Isham among 752 obstetrics & gynecology physician records in South Carolina

Katheryn Dixon Isham, M.D. is one of 752 obstetrics & gynecology physician 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 2011, is newer than 62% of them.

  • NPI issued2011 · 62% of these records are older, 36% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2011 · median 2006 among the 477 with a school on file
  • Record last updated2021 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

152 obstetrics & gynecology physician records list a practice address in Greenville

They are 152 of the 10,264 NPPES records with a practice address in Greenville, and 752 obstetrics & gynecology physician records in South Carolina.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Stephanie Berlet-DachGreenville, SC 296071376539585
  2. Djenabra Croskey, MDGreenville, SC 296071417946716
  3. Glenn FrenchGreenville, SC 296071972599173
  4. Edward Heidtman, M.DGreenville, SC 296071659472991
  5. Jason Hood, MDGreenville, SC 296071407880354
  6. Carrie Klett, MDGreenville, SC 296071588640023
  7. Todd Lantz, MDGreenville, SC 296071114913324
  8. Vanessa Mazzoli, M.D.Greenville, SC 296071437250768

Common questions

What is Katheryn Dixon Isham, M.D.'s NPI number?

Katheryn Dixon Isham, M.D.'s National Provider Identifier (NPI) is 1871887877, issued on Jun 7, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Katheryn Dixon Isham, M.D. located?

The NPPES record lists a practice address at 101 Halton Village Cir, Greenville, SC, 29607. Phone: (864) 455-1600. Providers update this record themselves, so call before visiting.

How can I verify Katheryn Dixon Isham, M.D.'s license?

NPPES lists South Carolina license number 33613, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Katheryn Dixon Isham, M.D. prescribe under Medicare Part D?

In 2024, Katheryn Dixon Isham, M.D. had 219 Medicare Part D claims for 45 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.