Larissa Chartrand, M.D.
Internal Medicine Physician · Fairfield, CA
Larissa Chartrand, M.D. is an internal medicine physician with a practice address in Fairfield, California, and NPI 1851715627, issued on Feb 13, 2014. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Larissa Chartrand
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- ME 120869 FL
Self-reported in NPPES; status is on the state search - Practice location
- 4520 Business Center Drive, Fairfield, CA 94534
- Phone
- (707) 646-5500
- Enumerated
- Feb 13, 2014
- Record last updated
- Jul 7, 2025
- Medicare enrollment
- Enrolled (PECOS I20201125001433); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4520 Business Center Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ehsan Ghods, D.O.Family Medicine Physician1386663508
- Amber Stirlen, PSY.D.Clinical Psychologist1366777005
Verify Larissa Chartrand in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
About as many Medicare Part D claims as the average internal medicine physician in 2024
3,177 Medicare Part D claims for 261 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 82 claims were for opioids.
Most prescribed
- Atorvastatin Calcium218 claims
- Amlodipine Besylate133 claims
- Lisinopril131 claims
- Levothyroxine Sodium125 claims
- Metformin Hcl107 claims
- Omeprazole104 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.
Industry payments in 2024: $98.27
1 payment: food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through 2 group practices
- Northbay Health Medical FoundationVacaville, CA
- Northbay Physicians Surgery Center, LLCVacaville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Larissa Chartrand among 17,696 internal medicine physician records in California
Larissa Chartrand, 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 2014, is newer than 74% of them.
- NPI issued2014 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2014 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
54 internal medicine physician records list a practice address in Fairfield
They are 54 of the 3,595 NPPES records with a practice address in Fairfield, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Fairfield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Amanda Adkins, M.D.Fairfield, CA 945341568635704
- Josefina Arenas, M.DFairfield, CA 945341518926484
- Clarisse Cadang, M.D.Fairfield, CA 945341588083075
- Gurpreet Dhugga, MDFairfield, CA 945341356429161
- Richard Fleming, M.D.Fairfield, CA 945341831277722
- Andrew Glickstein, M.D.Fairfield, CA 945341891231825
- Ella Gupta, D.OFairfield, CA 945341811157126
- Thuy-Tien Le, MD, MPHFairfield, CA 945341821418302
Common questions
What is Larissa Chartrand, M.D.'s NPI number?
Larissa Chartrand, M.D.'s National Provider Identifier (NPI) is 1851715627, issued on Feb 13, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Larissa Chartrand, M.D. located?
The NPPES record lists a practice address at 4520 Business Center Drive, Fairfield, CA, 94534. Phone: (707) 646-5500. Providers update this record themselves, so call before visiting.
How can I verify Larissa Chartrand, M.D.'s license?
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 Larissa Chartrand, M.D. prescribe under Medicare Part D?
In 2024, Larissa Chartrand, M.D. had 3,177 Medicare Part D claims for 261 beneficiaries; 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.