Dennis C. Lynch, M.D.
Hematology & Oncology Physician · Brookline, MA
Dennis C. Lynch, M.D. is a hematology & oncology physician with a practice address in Brookline, Massachusetts, and NPI 1427191998, issued on Feb 15, 2007. Check the license (Massachusetts 48186, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Dennis C. Lynch
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 48186 MA
Self-reported in NPPES; status is on the state search - Practice location
- 11 Osborne RD, Brookline, MA 02446
- Phone
- (617) 632-3130
- Enumerated
- Feb 15, 2007
- 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 hematology & oncology physician records → All 461 in Massachusetts → Look up another NPI →
Verify Dennis C. Lynch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 48186Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
25 Medicare Part D claims, against an average of 877 among the 10,784 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.
Dennis C. Lynch among 461 hematology & oncology physician records in Massachusetts
Dennis C. Lynch, M.D. is one of 461 hematology & oncology physician records with a practice address in Massachusetts. 75% 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 50% of them.
- NPI issued2007 · 50% of these records are older, 39% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2007 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Massachusetts
There are 461 hematology & oncology physician records in Massachusetts.
All 461 in Massachusetts → Every provider in Brookline → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- George Karp, MDBrookline, MA 024461518955491
- Marilyn Novich, M.D.Waltham, MA 024511093916389
- Erik Vandendries, M.D.Waltham, MA 024511427184001
- Mary Lopresti, DONewton Centre, MA 024591700046885
- Chryssanthi Kournioti, M.D.Newton, MA 024621912181116
- Revati Rao, M.D.Newton, MA 024621043303688
- Susan SchumerNewton, MA 024621104934926
- John Yang, M.D.Newton, MA 024621013949551
Common questions
What is Dennis C. Lynch, M.D.'s NPI number?
Dennis C. Lynch, M.D.'s National Provider Identifier (NPI) is 1427191998, issued on Feb 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Dennis C. Lynch, M.D. located?
The NPPES record lists a practice address at 11 Osborne RD, Brookline, MA, 02446. Phone: (617) 632-3130. Providers update this record themselves, so call before visiting.
How can I verify Dennis C. Lynch, M.D.'s license?
NPPES lists Massachusetts license number 48186, 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 Dennis C. Lynch, M.D. prescribe under Medicare Part D?
In 2024, Dennis C. Lynch, M.D. had 25 Medicare Part D claims; the average among hematology & oncology physician prescribers was 877. 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.