Geoffrey Robert Adey, MD
Neurological Surgery Physician · Walnut Creek, CA
Geoffrey Robert Adey, MD is a neurological surgery physician with a practice address in Walnut Creek, California, and NPI 1447362520, issued on Aug 31, 2006. Check the license (California G82135, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Geoffrey Robert Adey
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- G82135 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1455 Montego Street, Walnut Creek, CA 94598
- Phone
- (925) 937-0404
- Enumerated
- Aug 31, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (925) 937-1340
- Medicaid ID
- 00G821350 CA
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 929 in California → Look up another NPI →
Verify Geoffrey Robert Adey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G82135Check 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: $71.00
1 payment: food and beverage; the largest payer was Globus Medical, Inc. The 5,377 providers of this specialty with any payment received $14,925.58 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.
Geoffrey Robert Adey among 929 neurological surgery physician records in California
Geoffrey Robert Adey, MD is one of 929 neurological surgery physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 62% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2007 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in California
There are 929 neurological surgery physician records in California.
All 929 in California → Every provider in Walnut Creek → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Terence Chen, MDWalnut Creek, CA 945981720180946
- Jason Cheng, MDWalnut Creek, CA 945981912229881
- George Counelis, MDWalnut Creek, CA 945981437261534
- Brandon McCutcheon, MDWalnut Creek, CA 945981093195380
- Maxwell Merkow, MDWalnut Creek, CA 945981194951723
- Benjamin Yim, M.D.Walnut Creek, CA 945981598176604
- Daniel Chang, MDOakland, CA 946021427547702
- Liesl Close, MDOakland, CA 946021578827499
Common questions
What is Geoffrey Robert Adey, MD's NPI number?
Geoffrey Robert Adey, MD's National Provider Identifier (NPI) is 1447362520, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Geoffrey Robert Adey, MD located?
The NPPES record lists a practice address at 1455 Montego Street, Walnut Creek, CA, 94598. Phone: (925) 937-0404. Providers update this record themselves, so call before visiting.
How can I verify Geoffrey Robert Adey, MD's license?
NPPES lists California license number G82135, 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.