Stephen Clayton, M.D.
NPI 1255745535 · Neurology Physician · Oklahoma City, OK
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Clayton, M.D. is a Neurology Physician provider in Oklahoma City, OK (NPI 1255745535).
Provider details
- NPI number
- 1255745535
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- 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 tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
39 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 | 26 | $125 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 13 | $162 |
Typical Medicare-allowed amounts for these services range $125–$162 (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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Galcanezumab-Gnlmbrand: Emgality Pen | 57 |
| Promethazine Hcl | 34 |
| Hydroxyzine Hcl | 25 |
| Prednisone | 19 |
| Levetiracetam | 18 |
| Topiramate | 16 |
| Acetazolamidebrand: Acetazolamide Er | 13 |
| Memantine Hcl | 12 |
| Ondansetronbrand: Ondansetron Odt | 12 |
| Rimegepant Sulfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$162 across 6 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
- 2014-06-16
- Last updated
- 2014-06-26
Frequently asked questions
- What is Stephen Clayton's NPI number?
- Stephen Clayton's National Provider Identifier (NPI) is 1255745535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Clayton's specialty?
- Stephen Clayton is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Clayton located?
- Stephen Clayton's practice location on file with NPPES is 920 Stanton L Young Blvd, Oklahoma City, OK 73104-5036.
- What is Stephen Clayton's phone number?
- The practice phone number listed in the NPPES registry for Stephen Clayton is (405) 271-4113.
- Does Stephen Clayton accept Medicare?
- Stephen Clayton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Clayton's NPI active?
- Yes — Stephen Clayton's NPI (1255745535) is active in the NPPES registry as of the last update on 2014-06-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.