Katherine Williams, P.A.
NPI 1013155126 · Physician Assistant · Oklahoma City, OK
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Williams, P.A. is a Physician Assistant provider in Oklahoma City, OK (NPI 1013155126).
Provider details
- NPI number
- 1013155126
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Female
- Sole proprietor
- No
- License
- 1793 (OK)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
358 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 135 | $71 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 60 | $88 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 52 | $41 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 48 | $16 |
| Detection Test By Immunoassay With Direct Visual Observation for Streptococcus, Group a (strep)87880 | 33 | $16 |
| Urinalysis, Manual Test81002 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 38 | 38 |
| Amoxicillin | 35 | 34 |
| Azithromycin | 35 | 32 |
| Cephalexin | 29 | 29 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 28 | 26 |
| Prednisone | 22 | 20 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 18 | 18 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-01-27
- Last updated
- 2009-01-27
Frequently asked questions
- What is Katherine Williams's NPI number?
- Katherine Williams's National Provider Identifier (NPI) is 1013155126, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Williams's specialty?
- Katherine Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Williams located?
- Katherine Williams's practice location on file with NPPES is 1801 N Broadway Ave, Oklahoma City, OK 73103-3446.
- What is Katherine Williams's phone number?
- The practice phone number listed in the NPPES registry for Katherine Williams is (405) 528-1936.
- Does Katherine Williams accept Medicare?
- Katherine Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Williams's NPI active?
- Yes — Katherine Williams's NPI (1013155126) is active in the NPPES registry as of the last update on 2009-01-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.