Karen Lockwood, MD
NPI 1558330399 · Internal Medicine Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Lockwood, MD is a Internal Medicine Physician provider in Ventura, CA (NPI 1558330399).
Provider details
- NPI number
- 1558330399
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4301077787 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 78 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 287 | 93 |
| Rosuvastatin Calcium | 173 | 64 |
| Amlodipine Besylate | 159 | 51 |
| Levothyroxine Sodium | 158 | 55 |
| Lisinopril | 134 | 43 |
| Losartan Potassium | 120 | 40 |
| Alendronate Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-15
- Last updated
- 2021-11-29
Frequently asked questions
- What is Karen Lockwood's NPI number?
- Karen Lockwood's National Provider Identifier (NPI) is 1558330399, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Lockwood's specialty?
- Karen Lockwood is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Lockwood located?
- Karen Lockwood's practice location on file with NPPES is 888 S Hill Rd, Ventura, CA 93003-8400.
- What is Karen Lockwood's phone number?
- The practice phone number listed in the NPPES registry for Karen Lockwood is (888) 515-3500.
- Does Karen Lockwood accept Medicare?
- Karen Lockwood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Lockwood's NPI active?
- Yes — Karen Lockwood's NPI (1558330399) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.