Lily Grossmann, M.D.
NPI 1871910711 · Epilepsy Physician · Boston, MA
Enrolled with Medicare as Practitioner - Epileptologists · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lily Grossmann, M.D. is a Epilepsy Physician provider in Boston, MA (NPI 1871910711).
Provider details
- NPI number
- 1871910711
- Entity type
- Individual
- Primary specialty
- Epilepsy PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 266851 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Clobazam | 39 |
| Cannabidiol (cbd)brand: Epidiolex | 37 |
| Levetiracetambrand: Keppra | 27 |
| Lamotrigine | 27 |
| Lacosamidebrand: Vimpat | 16 |
| Levetiracetam | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 55 Fruit StBoston, MA 02114-2621Phone: (617) 724-6400
Registry dates
- Enumerated
- 2014-03-27
- Last updated
- 2025-04-22
- Certified
- 2025-04-22
Frequently asked questions
- What is Lily Grossmann's NPI number?
- Lily Grossmann's National Provider Identifier (NPI) is 1871910711, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lily Grossmann's specialty?
- Lily Grossmann is listed in the NPPES registry with a primary specialty of Epilepsy Physician (Allopathic & Osteopathic Physicians).
- Where is Lily Grossmann located?
- Lily Grossmann's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.
- What is Lily Grossmann's phone number?
- The practice phone number listed in the NPPES registry for Lily Grossmann is (617) 636-5356.
- Does Lily Grossmann accept Medicare?
- Lily Grossmann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lily Grossmann's NPI active?
- Yes — Lily Grossmann's NPI (1871910711) is active in the NPPES registry as of the last update on 2025-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.