David Michael Larson, M.D.
Adult Medicine Physician · Encinitas, CA
David Michael Larson, M.D. is an adult medicine physician with a practice address in Encinitas, California, and NPI 1609164391, issued on Jul 14, 2011. Check the license (California A122666, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Michael Larson
- Credential
- M.D.
- Primary taxonomy
- Adult Medicine Physician 207QA0505X
- License number
- A122666 CA
Self-reported in NPPES; status is on the state search - Practice location
- 345 Saxony RD Ste 206, Encinitas, CA 92024
- Phone
- (858) 367-3401
- Enumerated
- Jul 14, 2011
- Record last updated
- Sep 1, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (760) 456-4703
- Entity
- Type 1 · individual
8 nearest adult medicine physician records → All 386 in California → Look up another NPI →
Verify David Michael Larson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A122666Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average adult medicine physician in 2024
667 Medicare Part D claims for 24 beneficiaries, against an average of 3,002 among the 1,307 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Ozempic43 claims
- Levothyroxine Sodium41 claims
- Rosuvastatin Calcium41 claims
- Gabapentin39 claims
- Liothyronine Sodium38 claims
- Clonazepam25 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: $39.07
2 payments; by number, the most common kind was food and beverage; the largest payer was Idorsia Pharmaceuticals US Inc. The 664 providers of this specialty with any payment received $1,405.95 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.
David Michael Larson among 386 adult medicine physician records in California
David Michael Larson, M.D. is one of 386 adult medicine physician records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 62% of them.
- NPI issued2011 · 62% of these records are older, 36% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 48% of these records are
- Record last updated2019 · 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 207QA0505X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Medicine Physician providers in California
There are 386 adult medicine physician records in California.
All 386 in California → Every provider in Encinitas → Adult Medicine Physician nationwide →
The 8 adult medicine physician records with the nearest ZIP codes
- Ramin Farsad, M.D.Encinitas, CA 920241427146935
- Edward Ferrer, MDEncinitas, CA 920241861707994
- James Aldrich, MDLa Jolla, CA 920371730290016
- Jacobo Flores, M.DOceanside, CA 920541164469201
- Hedieh Badkoobehi, M.D.Poway, CA 920641689708695
- Michael Cutler, M.D.Poway, CA 920641871620518
- Lynette Easler-Silva, NURSE PRACTITIONERSan Marcos, CA 920781194600171
- Araceli TapiaSan Marcos, CA 920781821916917
Common questions
What is David Michael Larson, M.D.'s NPI number?
David Michael Larson, M.D.'s National Provider Identifier (NPI) is 1609164391, issued on Jul 14, 2011. An NPI identifies a provider in billing; it is not a license.
Where is David Michael Larson, M.D. located?
The NPPES record lists a practice address at 345 Saxony RD Ste 206, Encinitas, CA, 92024. Phone: (858) 367-3401. Providers update this record themselves, so call before visiting.
How can I verify David Michael Larson, M.D.'s license?
NPPES lists California license number A122666, 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 David Michael Larson, M.D. prescribe under Medicare Part D?
In 2024, David Michael Larson, M.D. had 667 Medicare Part D claims for 24 beneficiaries; the average among adult medicine physician prescribers was 3,002. 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.