Leo T. Chylack, M.D.
Ophthalmology Physician · Boston, MA
Leo T. Chylack, M.D. is an ophthalmology physician with a practice address in Boston, Massachusetts, and NPI 1619030707, issued on Dec 19, 2006. Check the license (Massachusetts 33138, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Leo T. Chylack
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 33138 MA
Self-reported in NPPES; status is on the state search - Practice location
- 221 Longwood Ave, Boston, MA 02115
- Phone
- (617) 732-7355
- Enumerated
- Dec 19, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
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Verify Leo T. Chylack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 33138Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Leo T. Chylack among 791 ophthalmology physician records in Massachusetts
Leo T. Chylack, M.D. is one of 791 ophthalmology physician records with a practice address in Massachusetts. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 23% of them.
- NPI issued2006 · 23% of these records are older, 48% newer
- In a Medicare fileNo · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2007 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Massachusetts
There are 791 ophthalmology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 791 in Massachusetts → Every provider in Boston → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Vicki Chen, M.D.Boston, MA 021151689695363
- Linda Dagi, MDBoston, MA 021151376631432
- Alexandra Elliott, MDBoston, MA 021151407962905
- Anne Fulton, MDBoston, MA 021151194815191
- Gena Heidary, MDBoston, MA 021151972651206
- David Hunter, MD, PHDBoston, MA 021151659461663
- Brendan McCarthy, M.D.Boston, MA 021151033177969
- Robert Petersen, MDBoston, MA 021151578662169
Common questions
What is Leo T. Chylack, M.D.'s NPI number?
Leo T. Chylack, M.D.'s National Provider Identifier (NPI) is 1619030707, issued on Dec 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leo T. Chylack, M.D. located?
The NPPES record lists a practice address at 221 Longwood Ave, Boston, MA, 02115. Phone: (617) 732-7355. Providers update this record themselves, so call before visiting.
How can I verify Leo T. Chylack, M.D.'s license?
NPPES lists Massachusetts license number 33138, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.