Gwynn Long, M.D.
Hematology & Oncology Physician · Durham, NC
Gwynn Long, M.D. is a hematology & oncology physician with a practice address in Durham, North Carolina, and NPI 1114001260, issued on Oct 25, 2006. Check the license (North Carolina 96-01380, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gwynn Long
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 96-01380 NC
Self-reported in NPPES; status is on the state search - Practice location
- 2100 Erwin RD, Durham, NC 27710
- Phone
- (919) 620-4467
- Enumerated
- Oct 25, 2006
- Record last updated
- Aug 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101115000611); accepts Medicare assignment
- Medical or professional school
- Wake Forest University School Of Medicine, 1983
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 431 in North Carolina → Look up another NPI →
Also registered at 2100 Erwin RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Diane AllenSurgery Physician1184708885
- James Alspaugh, M.D.Infectious Disease Physician1851440861
Verify Gwynn Long in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 96-01380Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
527 Medicare Part D claims for 106 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Lenalidomide115 claims
- Revlimid52 claims
- Acyclovir48 claims
- Pomalyst33 claims
- Ondansetron Hcl18 claims
- Ninlaro16 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.
Bills Medicare through one group practice
- Duke Health Integrated Practice IncDurham, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gwynn Long among 431 hematology & oncology physician records in North Carolina
Gwynn Long, M.D. is one of 431 hematology & oncology physician records with a practice address in North 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 51% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1983 · median 2003 among the 302 with a school on file
- Record last updated2013 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in North Carolina
There are 431 hematology & oncology physician records in North Carolina.
All 431 in North Carolina → Every provider in Durham → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Thomas AberantDurham, NC 277101932282175
- Murat Arcasoy, MDDurham, NC 277101760420145
- Kimberly Blackwell, MDDurham, NC 277101720161946
- Jill Burleson, ANP-BC, AOCNPDurham, NC 277101346323581
- Jeffrey Crawford, M.D.Durham, NC 277101023191277
- Carlos Decastro, M.D.Durham, NC 277101912080169
- Louis Diehl, M.D.Durham, NC 277101275616427
- Margaret ErenDurham, NC 277101538242797
Common questions
What is Gwynn Long, M.D.'s NPI number?
Gwynn Long, M.D.'s National Provider Identifier (NPI) is 1114001260, issued on Oct 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gwynn Long, M.D. located?
The NPPES record lists a practice address at 2100 Erwin RD, Durham, NC, 27710. Phone: (919) 620-4467. Providers update this record themselves, so call before visiting.
How can I verify Gwynn Long, M.D.'s license?
NPPES lists North Carolina license number 96-01380, 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 Gwynn Long, M.D. prescribe under Medicare Part D?
In 2024, Gwynn Long, M.D. had 527 Medicare Part D claims for 106 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.