Simon Matthew Gray, MD
Gastroenterology Physician · Chapel Hill, NC
Simon Matthew Gray, MD is a gastroenterology physician with a practice address in Chapel Hill, North Carolina, and NPI 1871081414, issued on Apr 30, 2018. Check the license (North Carolina 2021-03123, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Simon Matthew Gray
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 2021-03123 NC
238237 NC
Self-reported in NPPES; status is on the state search - Practice location
- Ambulatory Care Center 102 Mason Farm RD, Chapel Hill, NC 27599
- Phone
- (919) 966-1459
- Enumerated
- Apr 30, 2018
- Record last updated
- Mar 12, 2024
- Fax
- (919) 843-2356
- Medicare enrollment
- Enrolled (PECOS I20240112003892); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 681 in North Carolina → Look up another NPI →
Verify Simon Matthew Gray in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2021-03123Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average gastroenterology physician in 2024
292 Medicare Part D claims for 45 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Stelara25 claims
- Omeprazole24 claims
- Mesalamine Er16 claims
- Famotidine14 claims
- Entecavir13 claims
- Humira(Cf) Pen13 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: $47,837.00
1 payment: grant; the largest payer was Pfizer Inc. 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).
Simon Matthew Gray among 681 gastroenterology physician records in North Carolina
Simon Matthew Gray, 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 2018, is newer than 92% of them.
- NPI issued2018 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2018 · median 2002 among the 498 with a school on file
- Record last updated2024 · 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
- Ian Grimm, MDChapel Hill, NC 275991760551055
- 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
Common questions
What is Simon Matthew Gray, MD's NPI number?
Simon Matthew Gray, MD's National Provider Identifier (NPI) is 1871081414, issued on Apr 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Simon Matthew Gray, MD located?
The NPPES record lists a practice address at Ambulatory Care Center 102 Mason Farm RD, Chapel Hill, NC, 27599. Phone: (919) 966-1459. Providers update this record themselves, so call before visiting.
How can I verify Simon Matthew Gray, MD's license?
NPPES lists North Carolina license number 2021-03123, 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 Simon Matthew Gray, MD prescribe under Medicare Part D?
In 2024, Simon Matthew Gray, MD had 292 Medicare Part D claims for 45 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.