NPPES file of Aug 9, 2026

Charlie Walker, M.D.

Family Medicine Physician · Modesto, CA

Charlie Walker, M.D. is a family medicine physician with a practice address in Modesto, California, and NPI 1639408362, issued on Dec 8, 2009. Check the license (California A121786, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639408362
Name
Charlie Walker
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A121786 CA
Self-reported in NPPES; status is on the state search
Practice location
1320 Celeste Drive, Modesto, CA 95355
Phone
(209) 527-6900
Enumerated
Dec 8, 2009
Record last updated
Mar 11, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(209) 524-7328
Medicare enrollment
Enrolled (PECOS I20131014001366); may accept Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 1320 Celeste Drive

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nicole McLawrence, MDFamily Medicine Physician1740627397

Verify Charlie Walker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A121786
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

96% more Medicare Part D claims than the average family medicine physician in 2024

6,946 Medicare Part D claims for 692 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 359 claims were for opioids.

  1. Charlie Walker6,946
  2. Specialty average3,544

Most prescribed

  1. Levothyroxine Sodium333 claims
  2. Atorvastatin Calcium322 claims
  3. Losartan Potassium283 claims
  4. Simvastatin251 claims
  5. Tamsulosin Hcl245 claims
  6. Hydrocodone-Acetaminophen215 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Family Health Care Medical Group OF Modesto A Professional CorpModesto, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Charlie Walker among 17,133 family medicine physician records in California

Charlie Walker, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 58% of them.

  • NPI issued2009 · 58% of these records are older, 40% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2009 · median 2005 among the 10,652 with a school on file
  • Record last updated2016 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

173 family medicine physician records list a practice address in Modesto

They are 173 of the 9,262 NPPES records with a practice address in Modesto, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Tracy Brockman, M.D.Modesto, CA 953551871553636
  2. James Carlson, MDModesto, CA 953551396700381
  3. Jack Collins, M.D.Modesto, CA 953551245290865
  4. Richelle Cruz, MDModesto, CA 953551780639427
  5. Silvia Diego, MDModesto, CA 953551922080506
  6. Arun Duggal, M.D.Modesto, CA 953551992751937
  7. Scott Goodreau, M.D.Modesto, CA 953551124089461
  8. Binh Le, M.D.Modesto, CA 953551598729410

Common questions

What is Charlie Walker, M.D.'s NPI number?

Charlie Walker, M.D.'s National Provider Identifier (NPI) is 1639408362, issued on Dec 8, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Charlie Walker, M.D. located?

The NPPES record lists a practice address at 1320 Celeste Drive, Modesto, CA, 95355. Phone: (209) 527-6900. Providers update this record themselves, so call before visiting.

How can I verify Charlie Walker, M.D.'s license?

NPPES lists California license number A121786, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Charlie Walker, M.D. prescribe under Medicare Part D?

In 2024, Charlie Walker, M.D. had 6,946 Medicare Part D claims for 692 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.