Margaret Lillian Fennell, MD
Internal Medicine Physician · Chapel Hill, NC
Margaret Lillian Fennell, MD is an internal medicine physician with a practice address in Chapel Hill, North Carolina, and NPI 1194390443, issued on May 20, 2021. Check the license (North Carolina 2025-00230, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Margaret Lillian Fennell
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2025-00230 NC
Self-reported in NPPES; status is on the state search - Practice location
- 118 Knox Way, Chapel Hill, NC 27516
- Phone
- (984) 205-4603
- Enumerated
- May 20, 2021
- Record last updated
- Nov 22, 2025
- Fax
- (984) 215-5942
- Medicare enrollment
- Enrolled (PECOS I20250625002970); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 2021
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,056 in North Carolina → Look up another NPI →
Also registered at 118 Knox Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Emma BickPediatrics Physician1760002216
- Ryanne BuckleyStudent in an Organized Health Care Education/Training Program1700467644
- Katlyn ButtenfieldRegistered Dietitian1184151318
Verify Margaret Lillian Fennell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2025-00230Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
94 Medicare Part D claims for 22 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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 2 group practices
- Unc Physicians Network LLCChapel Hill, NC
- 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).
Margaret Lillian Fennell among 4,056 internal medicine physician records in North Carolina
Margaret Lillian Fennell, MD is one of 4,056 internal medicine physician records with a practice address in North Carolina. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2021 · median 2004 among the 2,706 with a school on file
- Record last updated2025 · 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 207R00000X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
219 internal medicine physician records list a practice address in Chapel Hill
They are 219 of the 7,608 NPPES records with a practice address in Chapel Hill, and 4,056 internal medicine physician records in North Carolina.
All 4,056 in North Carolina → Every provider in Chapel Hill → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Safiyya AdamChapel Hill, NC 275161417539982
- Maricelina Caro, MDChapel Hill, NC 275161457335630
- Kristen Caulfield, M.D.Chapel Hill, NC 275161992900112
- Arlene Chung, MD MHAChapel Hill, NC 275161730388406
- Michael Contarino, MDChapel Hill, NC 275161215198734
- Erin Dunneback, MDChapel Hill, NC 275161457916447
- Lynne Fiscus, MD, MPHChapel Hill, NC 275161831238690
- Kimberly Kylstra, MDChapel Hill, NC 275161699855700
Common questions
What is Margaret Lillian Fennell, MD's NPI number?
Margaret Lillian Fennell, MD's National Provider Identifier (NPI) is 1194390443, issued on May 20, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Lillian Fennell, MD located?
The NPPES record lists a practice address at 118 Knox Way, Chapel Hill, NC, 27516. Phone: (984) 205-4603. Providers update this record themselves, so call before visiting.
How can I verify Margaret Lillian Fennell, MD's license?
NPPES lists North Carolina license number 2025-00230, 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 Margaret Lillian Fennell, MD prescribe under Medicare Part D?
In 2024, Margaret Lillian Fennell, MD had 94 Medicare Part D claims for 22 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.