Leonard Sicilian, MD
Pulmonary Disease Physician · Boston, MA
Leonard Sicilian, MD is a pulmonary disease physician with a practice address in Boston, Massachusetts, and NPI 1588777171, issued on Aug 16, 2006. Check the license (Massachusetts 44081, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Leonard Sicilian
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- 44081 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit Street Bul 148, Boston, MA 02114
- Phone
- (617) 726-1721
- Enumerated
- Aug 16, 2006
- Record last updated
- Aug 27, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (617) 724-9948
- Medicaid ID
- 0158119 MA
- Medicare enrollment
- Enrolled (PECOS I20050725000554); accepts Medicare assignment
- Medical or professional school
- State University Of Ny Upstate Medical University, 1975
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 569 in Massachusetts → Look up another NPI →
Verify Leonard Sicilian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 44081Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
74 Medicare Part D claims for 16 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of 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 2 group practices
- Massachusetts General Physicians Organization IncBoston, MA
- The General Hospital CorporationBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leonard Sicilian among 569 pulmonary disease physician records in Massachusetts
Leonard Sicilian, MD is one of 569 pulmonary disease physician records with a practice address in Massachusetts. 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 48% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1975 · median 2003 among the 407 with a school on file
- Record last updated2012 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Massachusetts
There are 569 pulmonary disease physician records in Massachusetts.
All 569 in Massachusetts → Every provider in Boston → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Robert Brown, M.D.Boston, MA 021141013954734
- David Christiani, MDBoston, MA 021141295726735
- Leo Ginns, MDBoston, MA 021141144211772
- Robert Harris, MDBoston, MA 021141336130681
- Gary Hunninghake, MDBoston, MA 021141700877982
- Richard Kradin, MDBoston, MA 021141053301325
- James Mojica, M.D.Boston, MA 021141235188822
- Deborah Quinn, MDBoston, MA 021141134110067
Common questions
What is Leonard Sicilian, MD's NPI number?
Leonard Sicilian, MD's National Provider Identifier (NPI) is 1588777171, issued on Aug 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonard Sicilian, MD located?
The NPPES record lists a practice address at 55 Fruit Street Bul 148, Boston, MA, 02114. Phone: (617) 726-1721. Providers update this record themselves, so call before visiting.
How can I verify Leonard Sicilian, MD's license?
NPPES lists Massachusetts license number 44081, 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 Leonard Sicilian, MD prescribe under Medicare Part D?
In 2024, Leonard Sicilian, MD had 74 Medicare Part D claims for 16 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.