Karen Walker, MD
NPI 1588701288 · Family Medicine Physician · Oil City, LA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Walker, MD is a Family Medicine Physician provider in Oil City, LA (NPI 1588701288).
Provider details
- NPI number
- 1588701288
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 201244 (LA)
Specialties & taxonomies
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
297 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 | 102 | $84 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 92 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 40 | $119 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 32 | $13 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 31 | $119 |
Typical Medicare-allowed amounts for these services range $7–$119 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 236 | 62 |
| Amlodipine Besylate | 178 | 48 |
| Meloxicam | 161 | 39 |
| Metoprolol Succinate | 133 | 33 |
| Omeprazole | 126 | 31 |
| Hydrochlorothiazide | 125 | 29 |
| Atorvastatin Calcium | 124 | 39 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-31
- Last updated
- 2008-01-03
Frequently asked questions
- What is Karen Walker's NPI number?
- Karen Walker's National Provider Identifier (NPI) is 1588701288, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Walker's specialty?
- Karen Walker is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Walker located?
- Karen Walker's practice location on file with NPPES is 103 South La Hwy. 1, Oil City, LA 71061.
- What is Karen Walker's phone number?
- The practice phone number listed in the NPPES registry for Karen Walker is (318) 995-6504.
- Does Karen Walker accept Medicare?
- Karen Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Walker's NPI active?
- Yes — Karen Walker's NPI (1588701288) is active in the NPPES registry as of the last update on 2008-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.