Nizar Chahin, M.D.
NPI 1225015761 · Neurology Physician · Portland, OR
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nizar Chahin, M.D. is a Neurology Physician provider in Portland, OR (NPI 1225015761).
Provider details
- NPI number
- 1225015761
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD176969 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
502 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 115 | $146 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 102 | $103 |
| 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 | 88 | $17 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886 | 76 | $45 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Limited Study95885 | 43 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Mycophenolate Mofetil | 148 | 26 |
| Gabapentin | 100 | 16 |
| Pyridostigmine Bromide | 96 | 18 |
| Prednisone | 79 | 14 |
| Pregabalin | 78 | 12 |
| Riluzole | 75 | 15 |
| Methotrexate Sodiumbrand: Methotrexate | 55 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14,537 across 21 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-27
- Last updated
- 2016-08-19
Frequently asked questions
- What is Nizar Chahin's NPI number?
- Nizar Chahin's National Provider Identifier (NPI) is 1225015761, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nizar Chahin's specialty?
- Nizar Chahin is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Nizar Chahin located?
- Nizar Chahin's practice location on file with NPPES is 3303 Sw Bond Ave, Portland, OR 97239-4501.
- What is Nizar Chahin's phone number?
- The practice phone number listed in the NPPES registry for Nizar Chahin is (503) 494-7772.
- Does Nizar Chahin accept Medicare?
- Nizar Chahin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nizar Chahin's NPI active?
- Yes — Nizar Chahin's NPI (1225015761) is active in the NPPES registry as of the last update on 2016-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.