John Emmanuel Markantonis, DO
John Emmanuel Markantonis is a Anatomic Pathology & Clinical Pathology Physician provider (Pathology) practicing in Greenville, NC, registered in the NPPES registry with NPI 1720527864 since 2017. The credential DO stands for Doctor of Osteopathic Medicine.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1720527864 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John Emmanuel Markantonis |
| Credential | DO |
| Sex | Male |
| Practice address | Greenville, NC, 27834 |
| Phone | 2527442803 |
| Fax | 2527443616 |
| Enumeration date | 2017-02-22 |
| Last updated in NPPES | 2024-02-20 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207ZC0006X | Clinical Pathology Physician | Secondary | 2022-03036 | NC |
| 207ZM0300X | Medical Microbiology Physician | Secondary | 2022-03036 | NC |
| 208D00000X | General Practice Physician | Secondary | T4423 | TX |
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician | Primary | 2022-03036 | NC |
DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential
Copy-ready billing details
Provider: John Markantonis, DO NPI: 1720527864 Taxonomy: 207ZP0102X (Anatomic Pathology & Clinical Pathology Physician) Address: Greenville, NC, 27834
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1467455600 | Fiona Cook | Individual | Endocrinology, Diabetes & Metabolism Physician | Greenville, NC |
| 1811999139 | Benjamin Copeland | Individual | Pediatrics Physician | Greenville, NC |
| 1073519393 | Joseph Geradts | Individual | Anatomic Pathology Physician | Greenville, NC |
| 1659377372 | Hyder Arastu | Individual | Radiation Oncology Physician | Greenville, NC |
| 1619974128 | Lynda Basnight | Individual | Pediatrics Physician | Greenville, NC |
| 1821095050 | Sharon Buckwald | Individual | Neonatal-Perinatal Medicine Physician | Greenville, NC |
| 1679573570 | John Fallon | Individual | Anatomic Pathology & Clinical Pathology Physician | Greenville, NC |
| 1023018371 | John Christie | Individual | Anatomic Pathology & Clinical Pathology Physician | Greenville, NC |
Verify this record
Cross-check NPI 1720527864 against the authoritative CMS record: view John Emmanuel Markantonis on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2024-02-20.