Lauri B. Seymour, MD
Internal Medicine Physician · Fountain Valley, CA
Lauri B. Seymour, MD is an internal medicine physician with a practice address in Fountain Valley, California, and NPI 1114954187, issued on Jun 27, 2006. Check the license (California C50970, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lauri B. Seymour
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C50970 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9900 Talbert Ave, Fountain Valley, CA 92708
- Phone
- (714) 965-2500
- Enumerated
- Jun 27, 2006
- Record last updated
- Mar 4, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (714) 965-2581
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 9900 Talbert Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lauri B. Seymour in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C50970Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average internal medicine physician in 2024
522 Medicare Part D claims for 70 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Rosuvastatin Calcium32 claims
- Losartan Potassium22 claims
- Azithromycin21 claims
- Levothyroxine Sodium18 claims
- Zolpidem Tartrate18 claims
- Amlodipine Besylate15 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Lauri B. Seymour among 17,696 internal medicine physician records in California
Lauri B. Seymour, MD 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 updated2010 · 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).
83 internal medicine physician records list a practice address in Fountain Valley
They are 83 of the 2,190 NPPES records with a practice address in Fountain Valley, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Fountain Valley → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Joel Bartlett, MDFountain Valley, CA 927081073518791
- Ihong Chen, MDFountain Valley, CA 927081104822535
- Naomi Cheung, MDFountain Valley, CA 927081073503314
- Alan Dang, M.D.Fountain Valley, CA 927081043217359
- Alton ForanFountain Valley, CA 927081619968799
- George Hong, MDFountain Valley, CA 927081154328532
- Brandon Khaw, MDFountain Valley, CA 927081568453637
- Lalita Komanapalli, MDFountain Valley, CA 927081578560884
Common questions
What is Lauri B. Seymour, MD's NPI number?
Lauri B. Seymour, MD's National Provider Identifier (NPI) is 1114954187, issued on Jun 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lauri B. Seymour, MD located?
The NPPES record lists a practice address at 9900 Talbert Ave, Fountain Valley, CA, 92708. Phone: (714) 965-2500. Providers update this record themselves, so call before visiting.
How can I verify Lauri B. Seymour, MD's license?
NPPES lists California license number C50970, 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 Lauri B. Seymour, MD prescribe under Medicare Part D?
In 2024, Lauri B. Seymour, MD had 522 Medicare Part D claims for 70 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Lauri B. Seymour, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.