Charles Francis Preston, M.D.
Sports Medicine (Orthopaedic Surgery) Physician · Walnut Creek, CA
Charles Francis Preston, M.D. is a sports medicine (orthopaedic surgery) physician with a practice address in Walnut Creek, California, and NPI 1558529479, issued on May 28, 2008. Check the license (California A99089, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Charles Francis Preston
- Credential
- M.D.
- Primary taxonomy
- Sports Medicine (Orthopaedic Surgery) Physician 207XX0005X
- License number
- A99089 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2625 Shadelands Dr, Walnut Creek, CA 94598
- Phone
- (925) 939-8585
- Enumerated
- May 28, 2008
- Record last updated
- Nov 12, 2025
- Fax
- (925) 933-2709
- Medicare enrollment
- Enrolled (PECOS I20080814000548); accepts Medicare assignment
- Medical or professional school
- Irvine California College Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest sports medicine (orthopaedic surgery) physician records → All 384 in California → Look up another NPI →
Also registered at 2625 Shadelands Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Desiree AgostoFamily Nurse Practitioner1235907197
- James Albertson, DPTOrthopedic Physical Therapist1558919944
- Afshin AnoushiravaniOrthopaedic Surgery Physician1003310293
- Audrielle Angela Asuncion, OTR/LHand Occupational Therapist1689455016
- Lauren Baker, OTRHand Occupational Therapist1114669322
- Jason BalaoingHand Occupational Therapist1144714288
Verify Charles Francis Preston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A99089Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average sports medicine (orthopaedic surgery) physician in 2024
90 Medicare Part D claims for 40 beneficiaries, against an average of 288 among the 2,562 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Meloxicam37 claims
- Diclofenac Sodium12 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $4,668.38
7 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 2,400 providers of this specialty with any payment received $19,779.31 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Golden State Orthopedics And SpineBrentwood, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles Francis Preston among 384 sports medicine (orthopaedic surgery) physician records in California
Charles Francis Preston, M.D. is one of 384 sports medicine (orthopaedic surgery) physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 57% of them.
- NPI issued2008 · 57% of these records are older, 36% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2001 · median 2003 among the 293 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0005X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sports Medicine (Orthopaedic Surgery) Physician providers in California
There are 384 sports medicine (orthopaedic surgery) physician records in California.
All 384 in California → Every provider in Walnut Creek → Sports Medicine (Orthopaedic Surgery) Physician nationwide →
The 8 sports medicine (orthopaedic surgery) physician records with the nearest ZIP codes
- Michael Michlitsch, M.D.Walnut Creek, CA 945981023125259
- Laura Timmerman, M.D.Walnut Creek, CA 945981225052681
- Benjamin Busfield, MDWalnut Creek, CA 945961952459992
- Colin Mansfield, M.D.Walnut Creek, CA 945961275812059
- David Bell, MDPleasanton, CA 945881619916293
- Ian Stine, M.D.Pleasanton, CA 945881154544468
- Warren Strudwick, M.D.Emeryville, CA 946081457313033
- David Gallagher, M.D.Union City, CA 945871760697296
Common questions
What is Charles Francis Preston, M.D.'s NPI number?
Charles Francis Preston, M.D.'s National Provider Identifier (NPI) is 1558529479, issued on May 28, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Charles Francis Preston, M.D. located?
The NPPES record lists a practice address at 2625 Shadelands Dr, Walnut Creek, CA, 94598. Phone: (925) 939-8585. Providers update this record themselves, so call before visiting.
How can I verify Charles Francis Preston, M.D.'s license?
NPPES lists California license number A99089, 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 Charles Francis Preston, M.D. prescribe under Medicare Part D?
In 2024, Charles Francis Preston, M.D. had 90 Medicare Part D claims for 40 beneficiaries; the average among sports medicine (orthopaedic surgery) physician prescribers was 288. Part D covers Medicare prescriptions only.
What is Charles Francis Preston, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.