Margaret Ann Lewis
Gastroenterology Physician · Malvern, PA
Margaret Ann Lewis is a gastroenterology physician with a practice address in Malvern, Pennsylvania, and NPI 1740991389, issued on Dec 5, 2022. Check the license (Pennsylvania SP023866, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Margaret Ann Lewis
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- SP023866 PA
Self-reported in NPPES; status is on the state search - Practice location
- 325 Central Ave Ste 200, Malvern, PA 19355
- Phone
- (610) 644-6755
- Enumerated
- Dec 5, 2022
- Record last updated
- Sep 22, 2023
- Medicare enrollment
- Enrolled (PECOS I20230125003214); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 2020
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,049 in Pennsylvania → Look up another NPI →
Also registered at 325 Central Ave Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Therese Donnelly, PA-CMedical Physician Assistant1740787423
- Sarah FalvoFamily Nurse Practitioner1396398210
- Robert Frankel, M.D.Gastroenterology Physician1902196801
- Eve HenneberyPhysician Assistant1588493431
- Nicholas Longo, PA-CMedical Physician Assistant1508377250
- Margaret RicheyPhysician Assistant1386451888
Verify Margaret Ann Lewis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license SP023866Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average gastroenterology physician in 2024
269 Medicare Part D claims for 137 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Pantoprazole Sodium78 claims
- Omeprazole65 claims
- Famotidine46 claims
- Linzess19 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: $2,794.48
130 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., 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
- Regional Gastroenterology Associates OF Lancaster, Ltd.Broomall, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Ann Lewis among 1,049 gastroenterology physician records in Pennsylvania
Margaret Ann Lewis is one of 1,049 gastroenterology physician records with a practice address in Pennsylvania. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 98% of them.
- NPI issued2022 · 98% of these records are older, under 1% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2020 · median 2003 among the 769 with a school on file
- Record last updated2023 · 63% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 gastroenterology physician records list a practice address in Malvern
They are 14 of the 539 NPPES records with a practice address in Malvern, and 1,049 gastroenterology physician records in Pennsylvania.
All 1,049 in Pennsylvania → Every provider in Malvern → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Nicole Albert, D.O.Malvern, PA 193551609188879
- Matthew Astroff, M.D.Malvern, PA 193551457327439
- Maura Barr, DOMalvern, PA 193551275869752
- Norman Callahan, D.O.Malvern, PA 193551851367783
- Robert Frankel, M.D.Malvern, PA 193551902196801
- Johann Hasbun, M.D.Malvern, PA 193551164885398
- Janson Jacob, MDMalvern, PA 193551629638614
- Adam Kaufman, MDMalvern, PA 193551568670198
Common questions
What is Margaret Ann Lewis's NPI number?
Margaret Ann Lewis's National Provider Identifier (NPI) is 1740991389, issued on Dec 5, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Ann Lewis located?
The NPPES record lists a practice address at 325 Central Ave Ste 200, Malvern, PA, 19355. Phone: (610) 644-6755. Providers update this record themselves, so call before visiting.
How can I verify Margaret Ann Lewis's license?
NPPES lists Pennsylvania license number SP023866, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Margaret Ann Lewis prescribe under Medicare Part D?
In 2024, Margaret Ann Lewis had 269 Medicare Part D claims for 137 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.