Robert J. Lock, MD
Cardiovascular Disease Physician · Eureka, CA
Robert J. Lock, MD is a cardiovascular disease physician with a practice address in Eureka, California, and NPI 1821079393, issued on Nov 10, 2005. Check the license (California G51176, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Robert J. Lock
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- G51176 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2535 Harrison Avenue, Eureka, CA 95501
- Phone
- (707) 268-8718
- Enumerated
- Nov 10, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (707) 268-8008
- Medicaid ID
- 00G511760 CA
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Verify Robert J. Lock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G51176Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Robert J. Lock among 2,574 cardiovascular disease physician records in California
Robert J. Lock, MD is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileNo · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,574 in California → Every provider in Eureka → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Samer Kabbani, M.D.Eureka, CA 955011851385223
- David Ploss, M.D.Eureka, CA 955011477638492
- Moses Rajasingh, M.D.Eureka, CA 955031801808266
- William Bowden, D.O., F.A.C.C.Windsor, CA 954921528133998
- Benjamin Meyer, M.D.Ukiah, CA 954821447235254
- Dale Morrison, M.D.Ukiah, CA 954821447258280
- Jon Portnoff, M.D.Ukiah, CA 954821609874445
- James Price, MDSonoma, CA 954761245244755
Common questions
What is Robert J. Lock, MD's NPI number?
Robert J. Lock, MD's National Provider Identifier (NPI) is 1821079393, issued on Nov 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Robert J. Lock, MD located?
The NPPES record lists a practice address at 2535 Harrison Avenue, Eureka, CA, 95501. Phone: (707) 268-8718. Providers update this record themselves, so call before visiting.
How can I verify Robert J. Lock, MD's license?
NPPES lists California license number G51176, 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. 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.