Charles Shumaker, MD
NPI 1841750338 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Shumaker, MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1841750338).
Provider details
- NPI number
- 1841750338
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- 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 tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 37 | 23 |
| Pantoprazole Sodium | 19 | 17 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 16 | 16 |
| Furosemide | 15 | 13 |
| Prednisone | 14 | 13 |
| Amlodipine Besylate | 13 | 13 |
| Apixaban |
Practice location
Mailing address
Additional practice locations (1)
- 2801 Atlantic AveLong Beach, CA 90806-1701Phone: (562) 426-3333
Registry dates
- Enumerated
- 2019-03-21
- Last updated
- 2026-02-21
- Certified
- 2026-02-21
Frequently asked questions
- What is Charles Shumaker's NPI number?
- Charles Shumaker's National Provider Identifier (NPI) is 1841750338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Shumaker's specialty?
- Charles Shumaker is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Shumaker located?
- Charles Shumaker's practice location on file with NPPES is 1200 N State Street, Los Angeles, CA 90033-1029.
- What is Charles Shumaker's phone number?
- The practice phone number listed in the NPPES registry for Charles Shumaker is (323) 409-7556.
- Does Charles Shumaker accept Medicare?
- Charles Shumaker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Shumaker's NPI active?
- Yes — Charles Shumaker's NPI (1841750338) is active in the NPPES registry as of the last update on 2026-02-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.