William Howell, M.D.
NPI 1518999143 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Howell, M.D. is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1518999143).
Provider details
- NPI number
- 1518999143
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G81313 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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 · 105 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 719 | 266 |
| Amlodipine Besylate | 481 | 176 |
| Levothyroxine Sodium | 244 | 79 |
| Losartan Potassium | 239 | 79 |
| Rosuvastatin Calcium | 201 | 72 |
| Potassium Chloride | 197 | 86 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2021-12-07
- Certified
- 2021-12-07
Frequently asked questions
- What is William Howell's NPI number?
- William Howell's National Provider Identifier (NPI) is 1518999143, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Howell's specialty?
- William Howell is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Howell located?
- William Howell's practice location on file with NPPES is 1245 Wilshire Blvd Ste 316, Los Angeles, CA 90017-4803.
- What is William Howell's phone number?
- The practice phone number listed in the NPPES registry for William Howell is (213) 250-5600.
- Does William Howell accept Medicare?
- William Howell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Howell's NPI active?
- Yes — William Howell's NPI (1518999143) is active in the NPPES registry as of the last update on 2021-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.