Vivek Unni, M.D., PH.D.
NPI 1477670255 · Neurology Physician · Portland, OR
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vivek Unni, M.D., PH.D. is a Neurology Physician provider in Portland, OR (NPI 1477670255).
Provider details
- NPI number
- 1477670255
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 221165 (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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
83 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 36 | $157 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 31 | $105 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 16 | $17 |
Typical Medicare-allowed amounts for these services range $17–$157 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 122 | 39 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa Er | 37 | 11 |
| Clonazepam | 20 | — |
| Amantadine Hclbrand: Amantadine | 18 | — |
| Primidone | 17 | — |
| Donepezil Hcl | 13 | — |
| Gabapentin | 13 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-25
- Last updated
- 2012-05-31
Frequently asked questions
- What is Vivek Unni's NPI number?
- Vivek Unni's National Provider Identifier (NPI) is 1477670255, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vivek Unni's specialty?
- Vivek Unni is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Vivek Unni located?
- Vivek Unni's practice location on file with NPPES is Chh, 3303 S.w. Bond Ave., Portland, OR 97239.
- What is Vivek Unni's phone number?
- The practice phone number listed in the NPPES registry for Vivek Unni is (503) 494-7230.
- Does Vivek Unni accept Medicare?
- Vivek Unni is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vivek Unni's NPI active?
- Yes — Vivek Unni's NPI (1477670255) is active in the NPPES registry as of the last update on 2012-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.