Ian S. Grimm, MD
Gastroenterology Physician · Chapel Hill, NC
Ian S. Grimm, MD is a gastroenterology physician with a practice address in Chapel Hill, North Carolina, and NPI 1760551055, issued on Nov 8, 2006. Check the license (North Carolina 36718, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ian S. Grimm
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 36718 NC
Self-reported in NPPES; status is on the state search - Practice location
- 101 Manning Dr, Chapel Hill, NC 27599
- Phone
- (919) 966-4996
- Enumerated
- Nov 8, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (919) 843-5515
- Medicaid ID
- 8937686 NC
- Medicare enrollment
- Enrolled (PECOS I20051108000943); accepts Medicare assignment
- Medical or professional school
- University Of Florida College Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 681 in North Carolina → Look up another NPI →
Also registered at 101 Manning Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kirkwood Adams, MDCardiovascular Disease Physician1710069810
- Melanie Adams, PACPhysician Assistant1174695456
- Kimberly Adamson, NNPNurse Practitioner1255429577
- Mukhtar Adem, M.D.Hospitalist Physician1457445769
- Araba Afenyi-Annan, MDClinical Pathology/Laboratory Medicine Physician1275629842
- Thaniyyah Ahmad, MDStudent in an Organized Health Care Education/Training Program1023454600
Verify Ian S. Grimm in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 36718Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% more Medicare Part D claims than the average gastroenterology physician in 2024
937 Medicare Part D claims for 844 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Gavilyte-G580 claims
- Peg-3350 And Electrolytes189 claims
- Peg 3350-Electrolyte37 claims
- Gavilyte-C36 claims
- Sod Sulf-Potass Sulf-Mag Sulf25 claims
- Esomeprazole Magnesium17 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.
Industry payments in 2024: $58.48
1 payment: food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- University OF North Carolina AT Chapel HillChapel Hill, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian S. Grimm among 681 gastroenterology physician records in North Carolina
Ian S. Grimm, 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 fileYes · 73% of these records are
- Graduated1988 · median 2002 among the 498 with a school on file
- Record last updated2007 · 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 Chapel Hill → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Michael Fried, MDChapel Hill, NC 275991699847095
- Lisa Gangarosa, MDChapel Hill, NC 275991508935800
- Paul Hayashi, MDChapel Hill, NC 275991972538262
- William Heizer, MDChapel Hill, NC 275991164597969
- Hans Herfarth, MDChapel Hill, NC 275991538246574
- Sidney Levinson, MDChapel Hill, NC 275991760559850
- Ryan Madanick, M.D.Chapel Hill, NC 275991568460079
- Claude Nuzum, MDChapel Hill, NC 275991366517120
Common questions
What is Ian S. Grimm, MD's NPI number?
Ian S. Grimm, MD's National Provider Identifier (NPI) is 1760551055, issued on Nov 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ian S. Grimm, MD located?
The NPPES record lists a practice address at 101 Manning Dr, Chapel Hill, NC, 27599. Phone: (919) 966-4996. Providers update this record themselves, so call before visiting.
How can I verify Ian S. Grimm, MD's license?
NPPES lists North Carolina license number 36718, 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 Ian S. Grimm, MD prescribe under Medicare Part D?
In 2024, Ian S. Grimm, MD had 937 Medicare Part D claims for 844 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.