Lily Grossmann, M.D.
Epilepsy Physician · Boston, MA
Lily Grossmann, M.D. is an epilepsy physician with a practice address in Boston, Massachusetts, and NPI 1871910711, issued on Mar 27, 2014. Check the license (Massachusetts 280792, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Lily Grossmann
- Credential
- M.D.
- Primary taxonomy
- Epilepsy Physician 2084E0001X
- License numbers
- 280792 MA
266851 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington St, Boston, MA 02111
- Phone
- (617) 636-5356
- Enumerated
- Mar 27, 2014
- Record last updated
- Apr 22, 2025
- Medicare enrollment
- Enrolled (PECOS I20200519000708); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 2014
- Entity
- Type 1 · individual
8 nearest epilepsy physician records → All 36 in Massachusetts → Look up another NPI →
Also registered at 800 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tala Abu Samaan, MDStudent in an Organized Health Care Education/Training Program1376386250
Verify Lily Grossmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 280792Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average epilepsy physician in 2024
211 Medicare Part D claims for 24 beneficiaries, against an average of 934 among the 476 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Clobazam39 claims
- Epidiolex37 claims
- Keppra27 claims
- Lamotrigine27 claims
- Vimpat16 claims
- Levetiracetam11 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 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).
Lily Grossmann among 36 epilepsy physician records in Massachusetts
Lily Grossmann, M.D. is one of 36 epilepsy physician records with a practice address in Massachusetts. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 53% of them.
- NPI issued2014 · 53% of these records are older, 42% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 86% of these records are
- Graduated2014 · median 2010 among the 31 with a school on file
- Record last updated2025 · 0% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084E0001X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Epilepsy Physician providers in Massachusetts
There are 36 epilepsy physician records in Massachusetts.
All 36 in Massachusetts → Every provider in Boston → Epilepsy Physician nationwide →
The 8 epilepsy physician records with the nearest ZIP codes
- Lara Basovic, MDBoston, MA 021141003340159
- Alex Bender, MD, PHDBoston, MA 021141528556446
- Mia Bothwell, MD, PHDBoston, MA 021141376170548
- Andrew Cole, MDBoston, MA 021141043201502
- Michael Doyle, MDBoston, MA 021141982404448
- Peter Hadar, MD, MSBoston, MA 021141922597012
- Claire Jacobs, MD, PHDBoston, MA 021141689929333
- Ioannis Karakis, M.D.Boston, MA 021141386819969
Common questions
What is Lily Grossmann, M.D.'s NPI number?
Lily Grossmann, M.D.'s National Provider Identifier (NPI) is 1871910711, issued on Mar 27, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Lily Grossmann, M.D. located?
The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-5356. Providers update this record themselves, so call before visiting.
How can I verify Lily Grossmann, M.D.'s license?
NPPES lists Massachusetts license number 280792, 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 Lily Grossmann, M.D. prescribe under Medicare Part D?
In 2024, Lily Grossmann, M.D. had 211 Medicare Part D claims for 24 beneficiaries; the average among epilepsy physician prescribers was 934. 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.