Gail Simpson, M.D.
Internal Medicine Physician · Ventura, CA
Gail Simpson, M.D. is an internal medicine physician with a practice address in Ventura, California, and NPI 1245260702, issued on Jul 3, 2006. Check the license (California G58912, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gail Simpson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G58912 CA
Self-reported in NPPES; status is on the state search - Practice location
- 888 S Hill RD, Ventura, CA 93003
- Phone
- (805) 477-6464
- Enumerated
- Jul 3, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (805) 477-6498
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 888 S Hill RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Megan Chynoweth, PHARM.D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1689980260
Verify Gail Simpson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G58912Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
13 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Gail Simpson among 17,696 internal medicine physician records in California
Gail Simpson, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
68 internal medicine physician records list a practice address in Ventura
They are 68 of the 4,435 NPPES records with a practice address in Ventura, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Ventura → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Deborah Carlson, M.D.Ventura, CA 930031942231121
- James Estes, M.D.Ventura, CA 930031336176098
- Doina Galiatzatos, M.D.Ventura, CA 930031548206089
- Scott Goodfriend, M.D.Ventura, CA 930031982636965
- Arthur Inoshita, MDVentura, CA 930031932105277
- Albert Kam, M.D.Ventura, CA 930031114953593
- Karen Lockwood, MDVentura, CA 930031558330399
- James Mitchell, MDVentura, CA 930031598705485
Common questions
What is Gail Simpson, M.D.'s NPI number?
Gail Simpson, M.D.'s National Provider Identifier (NPI) is 1245260702, issued on Jul 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gail Simpson, M.D. located?
The NPPES record lists a practice address at 888 S Hill RD, Ventura, CA, 93003. Phone: (805) 477-6464. Providers update this record themselves, so call before visiting.
How can I verify Gail Simpson, M.D.'s license?
NPPES lists California license number G58912, 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 Gail Simpson, M.D. prescribe under Medicare Part D?
In 2024, Gail Simpson, M.D. had 13 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.