Charlie Walker, M.D.
NPI 1639408362 · Family Medicine Physician · Modesto, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charlie Walker, M.D. is a Family Medicine Physician provider in Modesto, CA (NPI 1639408362).
Provider details
- NPI number
- 1639408362
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A121786 (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
16 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 · 117 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 333 | 103 |
| Atorvastatin Calcium | 322 | 91 |
| Losartan Potassium | 283 | 76 |
| Simvastatin | 251 | 75 |
| Tamsulosin Hcl | 245 | 79 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 215 | 50 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-12-08
- Last updated
- 2016-03-11
Frequently asked questions
- What is Charlie Walker's NPI number?
- Charlie Walker's National Provider Identifier (NPI) is 1639408362, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charlie Walker's specialty?
- Charlie Walker is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charlie Walker located?
- Charlie Walker's practice location on file with NPPES is 1320 Celeste Drive, Modesto, CA 95355.
- What is Charlie Walker's phone number?
- The practice phone number listed in the NPPES registry for Charlie Walker is (209) 527-6900.
- Does Charlie Walker accept Medicare?
- Charlie Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charlie Walker's NPI active?
- Yes — Charlie Walker's NPI (1639408362) is active in the NPPES registry as of the last update on 2016-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.