Geoffrey Christopher Darby, M.D.
Surgery Physician · Visalia, CA
Geoffrey Christopher Darby, M.D. is a surgery physician with a practice address in Visalia, California, and NPI 1275929911, issued on Apr 9, 2015. Check the license (California FD6542799, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Geoffrey Christopher Darby
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- FD6542799 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 W Mineral King Ave, Visalia, CA 93291
- Phone
- (650) 208-6600
- Enumerated
- Apr 9, 2015
- Record last updated
- Aug 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20241001003171); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 400 W Mineral King Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Akram Al-Saber, MDStudent in an Organized Health Care Education/Training Program1306784608
Verify Geoffrey Christopher Darby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license FD6542799Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $3,368.72
4 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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
- Reedley Community HospitalHanford, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geoffrey Christopher Darby among 3,118 surgery physician records in California
Geoffrey Christopher Darby, M.D. is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 80% of them.
- NPI issued2015 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2015 · median 2003 among the 1,901 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Visalia → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Nichole Atherton, MDVisalia, CA 932911881875185
- Sebastiano Cassaro, MDVisalia, CA 932911851430250
- Kevin Cowan, MDVisalia, CA 932911073045068
- Russell Dounies, MDVisalia, CA 932911851354831
- Ameneh Kalani, M.D.Visalia, CA 932911083879746
- Satish Kesavaramanujam, M.D.Visalia, CA 932911609969005
- Karen Mackenzie, M.D.Visalia, CA 932911205890654
- Joseph Manuele, M.D.Visalia, CA 932911316944952
Common questions
What is Geoffrey Christopher Darby, M.D.'s NPI number?
Geoffrey Christopher Darby, M.D.'s National Provider Identifier (NPI) is 1275929911, issued on Apr 9, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Geoffrey Christopher Darby, M.D. located?
The NPPES record lists a practice address at 400 W Mineral King Ave, Visalia, CA, 93291. Phone: (650) 208-6600. Providers update this record themselves, so call before visiting.
How can I verify Geoffrey Christopher Darby, M.D.'s license?
NPPES lists California license number FD6542799, 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.
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.