Demetra Mcilwain, MD
NPI 1871056002 · Family Medicine Physician · Buffalo, NY
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Demetra Mcilwain, MD is a Family Medicine Physician provider in Buffalo, NY (NPI 1871056002).
Provider details
- NPI number
- 1871056002
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 103 | 32 |
| Metformin Hcl | 60 | 19 |
| Semaglutidebrand: Ozempic | 51 | — |
| Amlodipine Besylate | 50 | 22 |
| Gabapentin | 40 | — |
| Dulaglutidebrand: Trulicity | 35 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-04-14
- Last updated
- 2022-12-16
- Certified
- 2022-12-16
Frequently asked questions
- What is Demetra Mcilwain's NPI number?
- Demetra Mcilwain's National Provider Identifier (NPI) is 1871056002, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Demetra Mcilwain's specialty?
- Demetra Mcilwain is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Demetra Mcilwain located?
- Demetra Mcilwain's practice location on file with NPPES is 21 Doat St, Buffalo, NY 14211-1612.
- What is Demetra Mcilwain's phone number?
- The practice phone number listed in the NPPES registry for Demetra Mcilwain is (716) 892-2775.
- Does Demetra Mcilwain accept Medicare?
- Demetra Mcilwain is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Demetra Mcilwain's NPI active?
- Yes — Demetra Mcilwain's NPI (1871056002) is active in the NPPES registry as of the last update on 2022-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.