Harlan Matles, M.D.
Internal Medicine Physician · Menlo Park, CA
Harlan Matles, M.D. is an internal medicine physician with a practice address in Menlo Park, California, and NPI 1164423604, issued on Aug 9, 2005. Check the license (California A73278, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Harlan Matles
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A73278 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1706 EL Camino Real, Menlo Park, CA 94027
- Phone
- (650) 391-0500
- Enumerated
- Aug 9, 2005
- Record last updated
- Apr 22, 2024
- Fax
- (650) 391-0503
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1706 EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Harlan Matles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A73278Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average internal medicine physician in 2024
978 Medicare Part D claims for 77 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium52 claims
- Levothyroxine Sodium39 claims
- Atorvastatin Calcium37 claims
- Pantoprazole Sodium34 claims
- Amlodipine Besylate26 claims
- Ezetimibe26 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.
Harlan Matles among 17,696 internal medicine physician records in California
Harlan Matles, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2024 · 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).
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 17,696 in California → Every provider in Menlo Park → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Isha AbdullahAtherton, CA 940271922231737
- Fatima Tehranchi, M.DAtherton, CA 940271366457293
- Jacqueline To, M.D.Menlo Park, CA 940271215461645
- Sylvia Friedberg, M.D.Portola Valley, CA 940281396886925
- Kathryn Hallsten, M.D.Portola Valley, CA 940281184750861
- Rebecca LongPortola Valley, CA 940281639007172
- Emma Morton-Bours, M.D.Portola Valley, CA 940281316003528
- Gerard Sarnat, M.D.Portola Valley, CA 940281750658415
Common questions
What is Harlan Matles, M.D.'s NPI number?
Harlan Matles, M.D.'s National Provider Identifier (NPI) is 1164423604, issued on Aug 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Harlan Matles, M.D. located?
The NPPES record lists a practice address at 1706 EL Camino Real, Menlo Park, CA, 94027. Phone: (650) 391-0500. Providers update this record themselves, so call before visiting.
How can I verify Harlan Matles, M.D.'s license?
NPPES lists California license number A73278, 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 Harlan Matles, M.D. prescribe under Medicare Part D?
In 2024, Harlan Matles, M.D. had 978 Medicare Part D claims for 77 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.