Jacob Alexander, MD
Gastroenterology Physician · Springfield, MA
Jacob Alexander, MD is a gastroenterology physician with a practice address in Springfield, Massachusetts, and NPI 1306907084, issued on Dec 13, 2006. Check the license (Massachusetts 257423, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Jacob Alexander
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 257423 MA
Self-reported in NPPES; status is on the state search - Practice location
- 3300 Main St, Springfield, MA 01107
- Phone
- (413) 794-7364
- Enumerated
- Dec 13, 2006
- Record last updated
- Jan 16, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (413) 794-7482
- Medicare enrollment
- Enrolled (PECOS I20140827001134); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 3300 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Allard, FNP-CFamily Nurse Practitioner1902533896
- Kassandra Allbright, MDPulmonary Disease Physician1194213942
- Varun Teja Angajala, MDGastroenterology Physician1962030940
- Olga Aponte, MDChild & Adolescent Psychiatry Physician1649369059
- Hany Aziz, MDCardiovascular Disease Physician1679580385
- Joan BachAdult Health Nurse Practitioner1316360902
Verify Jacob Alexander in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 257423Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average gastroenterology physician in 2024
655 Medicare Part D claims for 295 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Omeprazole92 claims
- Gavilyte-G88 claims
- Peg 3350-Electrolyte60 claims
- Humira(Cf) Pen48 claims
- Pantoprazole Sodium40 claims
- Esomeprazole Magnesium22 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.
Bills Medicare through one group practice
- Baystate Medical Practices IncSpringfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jacob Alexander among 686 gastroenterology physician records in Massachusetts
Jacob Alexander, MD is one of 686 gastroenterology physician records with a practice address in Massachusetts. 80% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 49% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1998 · median 2004 among the 491 with a school on file
- Record last updated2019 · 66% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Massachusetts
There are 686 gastroenterology physician records in Massachusetts.
All 686 in Massachusetts → Every provider in Springfield → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Varun Teja Angajala, MDSpringfield, MA 011071962030940
- David Desilets, MDSpringfield, MA 011071487748083
- Nha Duong, DOSpringfield, MA 011071336594514
- Rony Ghaoui, MDSpringfield, MA 011071396933248
- Tuyyab Hassan, MDSpringfield, MA 011071215160072
- Davood Karimi Hosseini, MDSpringfield, MA 011071972130425
- John Miller, M.D.Springfield, MA 011071750725040
- Mohammed Ullah, M.D.Springfield, MA 011071336568534
Common questions
What is Jacob Alexander, MD's NPI number?
Jacob Alexander, MD's National Provider Identifier (NPI) is 1306907084, issued on Dec 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jacob Alexander, MD located?
The NPPES record lists a practice address at 3300 Main St, Springfield, MA, 01107. Phone: (413) 794-7364. Providers update this record themselves, so call before visiting.
How can I verify Jacob Alexander, MD's license?
NPPES lists Massachusetts license number 257423, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jacob Alexander, MD prescribe under Medicare Part D?
In 2024, Jacob Alexander, MD had 655 Medicare Part D claims for 295 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.