Vanessa Denise Tatum, M.D.
Internal Medicine Physician · Garden Grove, CA
Vanessa Denise Tatum, M.D. is an internal medicine physician with a practice address in Garden Grove, California, and NPI 1558443648, issued on Oct 19, 2006. Check the license (California G49258, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Vanessa Denise Tatum
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G49258 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10281 Chapman Ave, Garden Grove, CA 92840
- Phone
- (714) 530-4489
- Enumerated
- Oct 19, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (714) 530-9917
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Vanessa Denise Tatum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G49258Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
30 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Vanessa Denise Tatum among 17,696 internal medicine physician records in California
Vanessa Denise Tatum, 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).
39 internal medicine physician records list a practice address in Garden Grove
They are 39 of the 4,572 NPPES records with a practice address in Garden Grove, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Garden Grove → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Negin Behazin, MDGarden Grove, CA 928401497076301
- Bryan Choi, MDGarden Grove, CA 928401255525499
- Danh Dan, M.D.Garden Grove, CA 928401790917631
- Edward Ko, M.D.Garden Grove, CA 928401396911798
- Adriana Longo, M.D.Garden Grove, CA 928401124004999
- Benjamin Navarro, M.D.Garden Grove, CA 928401033208608
- Tan Nguyen, M.D.Garden Grove, CA 928401609839299
- Tam Nguyen, M.D.Garden Grove, CA 928401720153182
Common questions
What is Vanessa Denise Tatum, M.D.'s NPI number?
Vanessa Denise Tatum, M.D.'s National Provider Identifier (NPI) is 1558443648, issued on Oct 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Vanessa Denise Tatum, M.D. located?
The NPPES record lists a practice address at 10281 Chapman Ave, Garden Grove, CA, 92840. Phone: (714) 530-4489. Providers update this record themselves, so call before visiting.
How can I verify Vanessa Denise Tatum, M.D.'s license?
NPPES lists California license number G49258, 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 Vanessa Denise Tatum, M.D. prescribe under Medicare Part D?
In 2024, Vanessa Denise Tatum, M.D. had 30 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.