Carl L. Berg, MD
Gastroenterology Physician · Durham, NC
Carl L. Berg, MD is a gastroenterology physician with a practice address in Durham, North Carolina, and NPI 1144399767, issued on Nov 7, 2006. Check the license on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Carl L. Berg
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 0101056318 VA
Self-reported in NPPES; status is on the state search - Practice location
- 40 Duke Medicine Cir, Durham, NC 27710
- Phone
- (919) 684-8111
- Enumerated
- Nov 7, 2006
- Record last updated
- Feb 27, 2012 (not updated in 14 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 681 in North Carolina → Look up another NPI →
Also registered at 40 Duke Medicine Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Carl L. Berg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average gastroenterology physician in 2024
537 Medicare Part D claims for 114 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Tacrolimus121 claims
- Ursodiol40 claims
- Mycophenolate Mofetil36 claims
- Spironolactone27 claims
- Carvedilol24 claims
- Mycophenolic Acid24 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.
Carl L. Berg among 681 gastroenterology physician records in North Carolina
Carl L. Berg, MD is one of 681 gastroenterology physician records with a practice address in North Carolina. 83% 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, 47% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2012 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in North Carolina
There are 681 gastroenterology physician records in North Carolina.
All 681 in North Carolina → Every provider in Durham → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Amy Barto, M.D.Durham, NC 277101710934443
- Carla Brady, M.D.Durham, NC 277101811070055
- Malcolm Branch, MDDurham, NC 277101639252877
- Audrey BroomeDurham, NC 277101992888135
- Rebecca Burbridge, M.D.Durham, NC 277101184630972
- John Geneczko, M.D.Durham, NC 277101902875727
- Judith GentileDurham, NC 277101497838650
- Elizabeth GoacherDurham, NC 277101841373008
Common questions
What is Carl L. Berg, MD's NPI number?
Carl L. Berg, MD's National Provider Identifier (NPI) is 1144399767, issued on Nov 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Carl L. Berg, MD located?
The NPPES record lists a practice address at 40 Duke Medicine Cir, Durham, NC, 27710. Phone: (919) 684-8111. Providers update this record themselves, so call before visiting.
How can I verify Carl L. Berg, MD's license?
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 Carl L. Berg, MD prescribe under Medicare Part D?
In 2024, Carl L. Berg, MD had 537 Medicare Part D claims for 114 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.