Janson Jacob, MD
Gastroenterology Physician · Malvern, PA
Janson Jacob, MD is a gastroenterology physician with a practice address in Malvern, Pennsylvania, and NPI 1629638614, issued on Jun 20, 2019. Check the license (Pennsylvania MT225674, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Janson Jacob
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- MT225674 PA
4351044320 MI
Self-reported in NPPES; status is on the state search - Practice location
- 325 Central Ave, Malvern, PA 19355
- Phone
- (610) 644-6755
- Enumerated
- Jun 20, 2019
- Record last updated
- Jun 12, 2025
- Medicare enrollment
- Enrolled (PECOS I20241214000514); accepts Medicare assignment
- Medical or professional school
- Pennsylvania State University College Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,049 in Pennsylvania → Look up another NPI →
Also registered at 325 Central Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicole Albert, D.O.Gastroenterology Physician1609188879
- Emmie Amerine, CRNPAdult Health Nurse Practitioner1467428474
- Matthew Astroff, M.D.Gastroenterology Physician1457327439
- Maura Barr, DOGastroenterology Physician1275869752
- Janine Barsoum, DOObstetrics & Gynecology Physician1861451973
- Norman Callahan, D.O.Gastroenterology Physician1851367783
Verify Janson Jacob in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MT225674Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average gastroenterology physician in 2024
56 Medicare Part D claims for 28 beneficiaries, against an average of 811 among the 16,445 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.
Industry payments in 2024: $234.09
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.Wynnewood, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Janson Jacob among 1,049 gastroenterology physician records in Pennsylvania
Janson Jacob, MD 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 2019, is newer than 95% of them.
- NPI issued2019 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2019 · median 2003 among the 769 with a school on file
- Record last updated2025 · 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
- Adam Kaufman, MDMalvern, PA 193551568670198
- Rupal Kothari, D.O.Malvern, PA 193551124094073
Common questions
What is Janson Jacob, MD's NPI number?
Janson Jacob, MD's National Provider Identifier (NPI) is 1629638614, issued on Jun 20, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Janson Jacob, MD located?
The NPPES record lists a practice address at 325 Central Ave, Malvern, PA, 19355. Phone: (610) 644-6755. Providers update this record themselves, so call before visiting.
How can I verify Janson Jacob, MD's license?
NPPES lists Pennsylvania license number MT225674, 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 Janson Jacob, MD prescribe under Medicare Part D?
In 2024, Janson Jacob, MD had 56 Medicare Part D claims for 28 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.