John Saint John Barber
Allergy & Immunology Physician · Durham, NC
John Saint John Barber is an allergy & immunology physician with a practice address in Durham, North Carolina, and NPI 1598393134, issued on Mar 30, 2020. Check the license (North Carolina 2024-01439, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Saint John Barber
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 2024-01439 NC
Self-reported in NPPES; status is on the state search - Practice location
- 1821 Hillandale RD, Durham, NC 27705
- Phone
- (919) 620-7300
- Enumerated
- Mar 30, 2020
- Record last updated
- Jul 14, 2026
- Fax
- (919) 620-7300
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 146 in North Carolina → Look up another NPI →
Also registered at 1821 Hillandale RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kimberly Duren, M.S.Clinical Exercise Physiologist1912655929
- Greta Germino, RD, CDE, LDNRegistered Dietitian1376904664
Verify John Saint John Barber in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2024-01439Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
165 Medicare Part D claims for 15 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Atorvastatin Calcium21 claims
- Spironolactone15 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 Saint John Barber among 146 allergy & immunology physician records in North Carolina
John Saint John Barber is one of 146 allergy & immunology physician records with a practice address in North Carolina. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 97% of them.
- NPI issued2020 · 97% of these records are older, under 1% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2026 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in North Carolina
There are 146 allergy & immunology physician records in North Carolina.
All 146 in North Carolina → Every provider in Durham → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Peter Bressler, MDDurham, NC 277051972583656
- Alison Church, MDDurham, NC 277051528233947
- Sarah Johnson, MDDurham, NC 277051013412477
- Lorena Wilson, M.D.Durham, NC 277051497075659
- David Pisetsky, M.D.Durham, NC 277041912089020
- John Sundy, M.D.Durham, NC 277041386728251
- Julie Kim-Chang, M.D.Durham, NC 277101750606653
- Mary Markert, M.D.Durham, NC 277101154484939
Common questions
What is John Saint John Barber's NPI number?
John Saint John Barber's National Provider Identifier (NPI) is 1598393134, issued on Mar 30, 2020. An NPI identifies a provider in billing; it is not a license.
Where is John Saint John Barber located?
The NPPES record lists a practice address at 1821 Hillandale RD, Durham, NC, 27705. Phone: (919) 620-7300. Providers update this record themselves, so call before visiting.
How can I verify John Saint John Barber's license?
NPPES lists North Carolina license number 2024-01439, 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 Saint John Barber prescribe under Medicare Part D?
In 2024, John Saint John Barber had 165 Medicare Part D claims for 15 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.