Clifford Segil, D.O.
NPI 1457556581 · Neurology Physician · Santa Monica, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Clifford Segil, D.O. is a Neurology Physician provider in Santa Monica, CA (NPI 1457556581).
Provider details
- NPI number
- 1457556581
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A9399 (CA)
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
19 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
814 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 | 556 | $186 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 84 | $234 |
| Measurement of Brain Wave Activity (eeg), Awake and Asleep95819 | 73 | $525 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886 | 47 | $108 |
| Exam of Neurobehavioral Status, First Hour96116 | 34 | $97 |
| Nerve Conduction, 11-12 Studies |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Memantine Hclbrand: Memantine Hcl Er | 142 | 30 |
| Donepezil Hcl | 121 | 35 |
| Pregabalin | 118 | 21 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 81 | 17 |
| Lacosamide | 62 | — |
| Duloxetine Hcl | 53 | 13 |
| Levetiracetam | 53 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$369 across 11 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
- 2007-06-19
- Last updated
- 2010-12-08
Frequently asked questions
- What is Clifford Segil's NPI number?
- Clifford Segil's National Provider Identifier (NPI) is 1457556581, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Clifford Segil's specialty?
- Clifford Segil is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Clifford Segil located?
- Clifford Segil's practice location on file with NPPES is 2001 Santa Monica Blvd, Santa Monica, CA 90404-2102.
- What is Clifford Segil's phone number?
- The practice phone number listed in the NPPES registry for Clifford Segil is (310) 828-3209.
- Does Clifford Segil accept Medicare?
- Clifford Segil is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Clifford Segil's NPI active?
- Yes — Clifford Segil's NPI (1457556581) is active in the NPPES registry as of the last update on 2010-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.