John Stephen Gerig, M.D.
Nephrology Physician · Concord, NC
John Stephen Gerig, M.D. is a nephrology physician with a practice address in Concord, North Carolina, and NPI 1477550440, issued on Jul 5, 2005. Check the license (North Carolina 9800544, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Stephen Gerig
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 9800544 NC
Self-reported in NPPES; status is on the state search - Practice location
- 433 Copperfield Blvd NE, Concord, NC 28025
- Phone
- (704) 786-7770
- Enumerated
- Jul 5, 2005
- Record last updated
- Jul 6, 2023
- Fax
- (704) 788-9351
- Medicaid ID
- 891145J NC
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 403 in North Carolina → Look up another NPI →
Also registered at 433 Copperfield Blvd NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nellie Cauley, ANPNurse Practitioner1881818409
- Christine Davis, AGACNP-BCAcute Care Nurse Practitioner1316544927
- Jordan Donnelly, MSN, APRN, FNP-CNurse Practitioner1497523971
- Ernest Johnson, MDNephrology Physician1043223977
- Tina Kelly, FNP-CNurse Practitioner1518253251
- Trenia Keys, FNP-CPrimary Care Nurse Practitioner1275113045
Verify John Stephen Gerig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 9800544Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average nephrology physician in 2024
96 Medicare Part D claims for 33 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydralazine Hcl13 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.
John Stephen Gerig among 403 nephrology physician records in North Carolina
John Stephen Gerig, M.D. is one of 403 nephrology physician records with a practice address in North Carolina. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 83% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2023 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in North Carolina
There are 403 nephrology physician records in North Carolina.
All 403 in North Carolina → Every provider in Concord → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Ernest Johnson, MDConcord, NC 280251043223977
- Mehul Patel, M.D.Concord, NC 280251750549721
- Mona Shaban, MDConcord, NC 280251053758714
- Charles Stoddard, MDConcord, NC 280251902900301
- Nada Tazi, M.DConcord, NC 280251801042346
- Nathan Woolwine, M.D.Concord, NC 280251073510046
- Paul Cheifetz, MDGastonia, NC 280541265486054
- John DashiellGastonia, NC 280541811941602
Common questions
What is John Stephen Gerig, M.D.'s NPI number?
John Stephen Gerig, M.D.'s National Provider Identifier (NPI) is 1477550440, issued on Jul 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Stephen Gerig, M.D. located?
The NPPES record lists a practice address at 433 Copperfield Blvd NE, Concord, NC, 28025. Phone: (704) 786-7770. Providers update this record themselves, so call before visiting.
How can I verify John Stephen Gerig, M.D.'s license?
NPPES lists North Carolina license number 9800544, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Stephen Gerig, M.D. prescribe under Medicare Part D?
In 2024, John Stephen Gerig, M.D. had 96 Medicare Part D claims for 33 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.