Allen Nielsen, MD
NPI 1780721068 · Neurology Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allen Nielsen, MD is a Neurology Physician provider in Seattle, WA (NPI 1780721068).
Provider details
- NPI number
- 1780721068
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 240379 (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
19 yrs in NPPES registry
- Profile completeness38% of score
100% 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 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 233 | 69 |
| Baclofen | 183 | 56 |
| Dalfampridinebrand: Dalfampridine Er | 138 | 30 |
| Levetiracetam | 44 | 13 |
| Oxcarbazepine | 37 | 13 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 35 | — |
| Sumatriptan Succinate | 30 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2021-11-29
Frequently asked questions
- What is Allen Nielsen's NPI number?
- Allen Nielsen's National Provider Identifier (NPI) is 1780721068, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allen Nielsen's specialty?
- Allen Nielsen is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Allen Nielsen located?
- Allen Nielsen's practice location on file with NPPES is 1100 9th Ave, Seattle, WA 98101-2756.
- What is Allen Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Allen Nielsen is (206) 341-0420.
- Does Allen Nielsen accept Medicare?
- Allen Nielsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allen Nielsen's NPI active?
- Yes — Allen Nielsen's NPI (1780721068) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.