Merritt L. Hougen, M.D.
Internal Medicine Physician · La Jolla, CA
Merritt L. Hougen, M.D. is an internal medicine physician with a practice address in La Jolla, California, and NPI 1851368252, issued on Mar 3, 2006. Check the license (California G31625, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Merritt L. Hougen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G31625 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10666 N Torrey Pines RD, La Jolla, CA 92037
- Phone
- (858) 554-7810
- Enumerated
- Mar 3, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (858) 784-5933
- Medicaid ID
- 00G316250 CA
- Entity
- Type 1 · individual
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Merritt L. Hougen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G31625Check 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
14 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.
Merritt L. Hougen among 17,696 internal medicine physician records in California
Merritt L. Hougen, 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 updated2026 · 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).
158 internal medicine physician records list a practice address in La Jolla
They are 158 of the 3,648 NPPES records with a practice address in La Jolla, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in La Jolla → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Annamaria Calabro, M.D.La Jolla, CA 920371508843244
- Bruce Covner, M.D.La Jolla, CA 920371720072192
- Neil Farber, MDLa Jolla, CA 920371043295363
- Shipra Khushu, M.D.La Jolla, CA 920371235118936
Common questions
What is Merritt L. Hougen, M.D.'s NPI number?
Merritt L. Hougen, M.D.'s National Provider Identifier (NPI) is 1851368252, issued on Mar 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Merritt L. Hougen, M.D. located?
The NPPES record lists a practice address at 10666 N Torrey Pines RD, La Jolla, CA, 92037. Phone: (858) 554-7810. Providers update this record themselves, so call before visiting.
How can I verify Merritt L. Hougen, M.D.'s license?
NPPES lists California license number G31625, 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 Merritt L. Hougen, M.D. prescribe under Medicare Part D?
In 2024, Merritt L. Hougen, M.D. had 14 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.