Jacqueline To, M.D.
Internal Medicine Physician · Menlo Park, CA
Jacqueline To, M.D. is an internal medicine physician with a practice address in Menlo Park, California, and NPI 1215461645, issued on Apr 12, 2017. Check the license (California A160368, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jacqueline To
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A160368 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1906 EL Camino Real Ste 202, Menlo Park, CA 94027
- Phone
- (650) 585-3272
- Enumerated
- Apr 12, 2017
- Record last updated
- Mar 9, 2026
- Medicare enrollment
- Enrolled (PECOS I20210217001481); may accept 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 →
Verify Jacqueline To in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A160368Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average internal medicine physician in 2024
3,132 Medicare Part D claims for 299 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Atorvastatin Calcium377 claims
- Amlodipine Besylate282 claims
- Losartan Potassium200 claims
- Levothyroxine Sodium175 claims
- Lisinopril127 claims
- Gabapentin81 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.
Jacqueline To among 17,696 internal medicine physician records in California
Jacqueline To, 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 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2004 among the 11,065 with a school on file
- 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).
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
- Harlan Matles, M.D.Menlo Park, CA 940271164423604
- Fatima Tehranchi, M.DAtherton, CA 940271366457293
- 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 Jacqueline To, M.D.'s NPI number?
Jacqueline To, M.D.'s National Provider Identifier (NPI) is 1215461645, issued on Apr 12, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jacqueline To, M.D. located?
The NPPES record lists a practice address at 1906 EL Camino Real Ste 202, Menlo Park, CA, 94027. Phone: (650) 585-3272. Providers update this record themselves, so call before visiting.
How can I verify Jacqueline To, M.D.'s license?
NPPES lists California license number A160368, 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 Jacqueline To, M.D. prescribe under Medicare Part D?
In 2024, Jacqueline To, M.D. had 3,132 Medicare Part D claims for 299 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.