Lorna Marie Thornton, MD
Internal Medicine Physician · Menlo Park, CA
Lorna Marie Thornton, MD is an internal medicine physician with a practice address in Menlo Park, California, and NPI 1104909027, issued on Oct 23, 2006. Check the license (California A75201, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lorna Marie Thornton
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A75201 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1300 Crane St, Menlo Park, CA 94025
- Phone
- (650) 498-6500
- Enumerated
- Oct 23, 2006
- Record last updated
- Apr 23, 2024
- Medicare enrollment
- Enrolled (PECOS I20080425000249); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1300 Crane St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lorna Marie Thornton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A75201Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,866 Medicare Part D claims for 240 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Atorvastatin Calcium175 claims
- Levothyroxine Sodium125 claims
- Amlodipine Besylate121 claims
- Gabapentin66 claims
- Lisinopril65 claims
- Hydrochlorothiazide62 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.
Bills Medicare through one group practice
- University Healthcare AllianceMenlo Park, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
47 internal medicine physician records list a practice address in Menlo Park
They are 47 of the 1,265 NPPES records with a practice address in Menlo Park, and 17,696 internal medicine physician records in California.
All 47 in Menlo Park → All 17,696 in California → Every provider in Menlo Park →
Other internal medicine physician records in California
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- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Lorna Marie Thornton, MD's NPI number?
Lorna Marie Thornton, MD's National Provider Identifier (NPI) is 1104909027, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lorna Marie Thornton, MD located?
The NPPES record lists a practice address at 1300 Crane St, Menlo Park, CA, 94025. Phone: (650) 498-6500. Providers update this record themselves, so call before visiting.
How can I verify Lorna Marie Thornton, MD's license?
NPPES lists California license number A75201, 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 Lorna Marie Thornton, MD prescribe under Medicare Part D?
In 2024, Lorna Marie Thornton, MD had 1,866 Medicare Part D claims for 240 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.