Sean Zachary Griffiths, D.O.
Orthopaedic Surgery Physician · Walnut Creek, CA
Sean Zachary Griffiths, D.O. is an orthopaedic surgery physician with a practice address in Walnut Creek, California, and NPI 1457705667, issued on Apr 14, 2016. Check the license (California 20026, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sean Zachary Griffiths
- Credential
- D.O.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 20026 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2405 Shadelands Dr Ste 300, Walnut Creek, CA 94598
- Phone
- (925) 939-8585
- Enumerated
- Apr 14, 2016
- Record last updated
- Nov 12, 2025
- Medicare enrollment
- Enrolled (PECOS I20220824001819); accepts Medicare assignment
- Medical or professional school
- Touro Un College Of Osteopathic Medicine, Vallejo, 2016
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 2405 Shadelands Dr Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cherlyn Alferos, FNPFamily Nurse Practitioner1568155430
- Petra Cardona, PA-CSurgical Physician Assistant1851996573
- Danielle Chapman, NPNurse Practitioner1720930217
- Mark Christiansen, MDEndocrinology, Diabetes & Metabolism Physician1821108218
- Brian Costello, PHYSICIAN ASSISTANTSurgical Physician Assistant1396833257
- Kathleen Grant, PHYSICIAN ASSISTANTSurgical Physician Assistant1700125440
Verify Sean Zachary Griffiths in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20026Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average orthopaedic surgery physician in 2024
815 Medicare Part D claims for 270 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 187 claims were for opioids.
Most prescribed
- Celecoxib182 claims
- Oxycodone Hcl134 claims
- Amoxicillin73 claims
- Meloxicam58 claims
- Cefadroxil50 claims
- Methylprednisolone49 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: $8,152.22
10 payments; by number, the most common kind was food and beverage; the largest payer was Medical Device Business Services, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 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 SpineWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sean Zachary Griffiths among 2,276 orthopaedic surgery physician records in California
Sean Zachary Griffiths, D.O. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 86% of them.
- NPI issued2016 · 86% of these records are older, 12% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2016 · median 2003 among the 1,347 with a school on file
- Record last updated2025 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Walnut Creek → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Afshin AnoushiravaniWalnut Creek, CA 945981003310293
- Robert Buckley, M.D.Walnut Creek, CA 945981952351280
- Leo Calafi, MDWalnut Creek, CA 945981720079072
- David Contreras, M.D.Walnut Creek, CA 945981821048216
- Robert Flaig, M.D.Walnut Creek, CA 945981386818102
- John Knight, M.D.Walnut Creek, CA 945981558310938
- John Kronick, M.D.Walnut Creek, CA 945981639129034
- Douglas Lange, M.D.Walnut Creek, CA 945981003865064
Common questions
What is Sean Zachary Griffiths, D.O.'s NPI number?
Sean Zachary Griffiths, D.O.'s National Provider Identifier (NPI) is 1457705667, issued on Apr 14, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Sean Zachary Griffiths, D.O. located?
The NPPES record lists a practice address at 2405 Shadelands Dr Ste 300, Walnut Creek, CA, 94598. Phone: (925) 939-8585. Providers update this record themselves, so call before visiting.
How can I verify Sean Zachary Griffiths, D.O.'s license?
NPPES lists California license number 20026, 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 Sean Zachary Griffiths, D.O. prescribe under Medicare Part D?
In 2024, Sean Zachary Griffiths, D.O. had 815 Medicare Part D claims for 270 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Sean Zachary Griffiths, D.O.'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.