Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Stephen Gerig, M.D.
Nephrology Physician in Concord, NC · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1477550440
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Registry record
Entity type Individual (Type 1)
Name Dr. John Stephen Gerig
Credential M.D.
Sex Male
Practice address 433 Copperfield Blvd Ne, Concord, NC, 28025
Phone (704) 786-7770
Fax (704) 788-9351
Enumeration date Jul 5, 2005
Last updated in NPPES Jul 6, 2023
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 78975 | Other | NC | MEDCOST PROVIDER |
| 891145J | Medicaid | NC | - |
| 1145J | Other | NC | BCBS |
| 23992 | Other | NC | PARTNERS MEDICARE |
| 390006558 | Other | NC | RR MCARE |
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.
Frequently asked questions
What specialty is John Gerig?
John Gerig is registered in NPPES with the primary taxonomy of Nephrology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Nathan Woolwine Nephrology Physician · Concord, NC NPI 1073510046 Ernest Johnson Nephrology Physician · Concord, NC NPI 1043223977 Charles Stoddard Nephrology Physician · Concord, NC NPI 1902900301 Nellie Cauley Nurse Practitioner · Concord, NC NPI 1881818409 Mehul Patel Nephrology Physician · Concord, NC NPI 1750549721 Nada Tazi Nephrology Physician · Concord, NC NPI 1801042346 Tina Kelly Nurse Practitioner · Concord, NC NPI 1518253251 Mona Shaban Nephrology Physician · Concord, NC NPI 1053758714
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-06.