Lael M. Yonker, M.D.
Pediatric Pulmonology Physician · Boston, MA
Lael M. Yonker, M.D. is a pediatric pulmonology physician with a practice address in Boston, Massachusetts, and NPI 1386849990, issued on Jun 15, 2007. Check the license (Massachusetts 242128, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Lael M. Yonker
- Credential
- M.D.
- Primary taxonomy
- Pediatric Pulmonology Physician 2080P0214X
- License numbers
- 242128 MA
L-232241 MA
Self-reported in NPPES; status is on the state search - Practice location
- Massachusetts General Hospital, Boston, MA 02114
- Phone
- (617) 726-2066
- Enumerated
- Jun 15, 2007
- Record last updated
- Feb 8, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130626000515); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2007
- Entity
- Type 1 · individual
8 nearest pediatric pulmonology physician records → All 72 in Massachusetts → Look up another NPI →
Also registered at Massachusetts General Hospital
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lael M. Yonker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 242128Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average pediatric pulmonology physician in 2024
14 Medicare Part D claims, against an average of 119 among the 263 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: $17,556.45
2 payments; by number, the most common kind was food and beverage; the largest payer was Vertex Pharmaceuticals Incorporated. The 621 providers of this specialty with any payment received $1,494.36 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
- Massachusetts General Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lael M. Yonker among 72 pediatric pulmonology physician records in Massachusetts
Lael M. Yonker, M.D. is one of 72 pediatric pulmonology physician records with a practice address in Massachusetts. 51% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 39% of them.
- NPI issued2007 · 39% of these records are older, 50% newer
- In a Medicare fileYes · 51% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2007 · median 2008 among the 37 with a school on file
- Record last updated2019 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0214X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Pulmonology Physician providers in Massachusetts
There are 72 pediatric pulmonology physician records in Massachusetts.
All 72 in Massachusetts → Every provider in Boston → Pediatric Pulmonology Physician nationwide →
The 8 pediatric pulmonology physician records with the nearest ZIP codes
- Adila AbulhamailBoston, MA 021141790334217
- Anna Cook, MDBoston, MA 021141376702985
- Mary Fracchia, MDBoston, MA 021141235265943
- Kelly Gardner, MDBoston, MA 021141437562618
- Aisha IshaqueBoston, MA 021141982585246
- Thomas Kinane, MDBoston, MA 021141861482770
- Mengdi Lu, MDBoston, MA 021141225470222
- Samuel Moskowitz, M.D.Boston, MA 021141295816551
Common questions
What is Lael M. Yonker, M.D.'s NPI number?
Lael M. Yonker, M.D.'s National Provider Identifier (NPI) is 1386849990, issued on Jun 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lael M. Yonker, M.D. located?
The NPPES record lists a practice address at Massachusetts General Hospital, Boston, MA, 02114. Phone: (617) 726-2066. Providers update this record themselves, so call before visiting.
How can I verify Lael M. Yonker, M.D.'s license?
NPPES lists Massachusetts license number 242128, 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 Lael M. Yonker, M.D. prescribe under Medicare Part D?
In 2024, Lael M. Yonker, M.D. had 14 Medicare Part D claims; the average among pediatric pulmonology physician prescribers was 119. 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.