Paul B. Lesser, MD
Gastroenterology Physician · Cambridge, MA
Paul B. Lesser, MD is a gastroenterology physician with a practice address in Cambridge, Massachusetts, and NPI 1801963806, issued on Nov 29, 2006. Check the license (Massachusetts 34654, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Paul B. Lesser
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 34654 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1493 Cambridge St, Cambridge, MA 02139
- Phone
- (617) 665-1552
- Enumerated
- Nov 29, 2006
- Record last updated
- Jan 31, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 0188581 MA
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 1493 Cambridge St
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Verify Paul B. Lesser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 34654Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average gastroenterology physician in 2024
76 Medicare Part D claims for 38 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Mesalamine Er17 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Paul B. Lesser among 686 gastroenterology physician records in Massachusetts
Paul B. Lesser, 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 fileNo · 72% of these records are
- Record last updated2012 · 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 Cambridge → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Karim FawazCambridge, MA 021391952338253
- Richard Gardner, MDCambridge, MA 021391851381420
- Michael Kelso, MDCambridge, MA 021391679868277
- Maria Livshin, M.D.Cambridge, MA 021391194887505
- Julio Ayala, MDCambridge, MA 021381104883347
- Lawrence Borges, M.D.Cambridge, MA 021381043447519
- John Chobanian, M.D.Cambridge, MA 021381518040526
- Samson Ferm, MDCambridge, MA 021381255785713
Common questions
What is Paul B. Lesser, MD's NPI number?
Paul B. Lesser, MD's National Provider Identifier (NPI) is 1801963806, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Paul B. Lesser, MD located?
The NPPES record lists a practice address at 1493 Cambridge St, Cambridge, MA, 02139. Phone: (617) 665-1552. Providers update this record themselves, so call before visiting.
How can I verify Paul B. Lesser, MD's license?
NPPES lists Massachusetts license number 34654, 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 Paul B. Lesser, MD prescribe under Medicare Part D?
In 2024, Paul B. Lesser, MD had 76 Medicare Part D claims for 38 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Paul B. Lesser, MD's MIPS final score?
The 2023 MIPS final score is 86.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.