Elaine Toy, M.D.
Internal Medicine Physician · San Francisco, CA
Elaine Toy, M.D. is an internal medicine physician with a practice address in San Francisco, California, and NPI 1861477010, issued on Dec 9, 2005. Check the license (California A89718, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Elaine Toy
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A89718 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1447 30TH Ave, San Francisco, CA 94122
- Phone
- (415) 640-7537
- Enumerated
- Dec 9, 2005
- Record last updated
- Mar 10, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 619596-01 HI
- Medicare enrollment
- Enrolled (PECOS I20070614000750); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Elaine Toy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A89718Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
240 Medicare Part D claims for 84 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 33 claims were for opioids.
Most prescribed
- Oxycodone Hcl18 claims
- Gabapentin13 claims
- Eliquis11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 97.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $18.95
1 payment: food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through one group practice
- Pacific Inpatient Medical GroupSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Elaine Toy among 17,696 internal medicine physician records in California
Elaine Toy, 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 fileYes · 63% of these records are
- Graduated2003 · median 2004 among the 11,065 with a school on file
- Record last updated2009 · 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).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Francisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Anna Chodos, M.D., M.P.H.San Francisco, CA 941221831425107
- Edward Chow, M.D.San Francisco, CA 941221881608826
- Darby Clayson, MDSan Francisco, CA 941221619968021
- Kenneth Covinsky, M.D.San Francisco, CA 941221386742641
- Jessica Glassman, MDSan Francisco, CA 941221184798795
- Kirsten Marcus, M.D.San Francisco, CA 941221992995435
- Christopher Ng, MDSan Francisco, CA 941221063429900
- Pyone Wai Wai Soe, M.D.San Francisco, CA 941221124379656
Common questions
What is Elaine Toy, M.D.'s NPI number?
Elaine Toy, M.D.'s National Provider Identifier (NPI) is 1861477010, issued on Dec 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Elaine Toy, M.D. located?
The NPPES record lists a practice address at 1447 30TH Ave, San Francisco, CA, 94122. Phone: (415) 640-7537. Providers update this record themselves, so call before visiting.
How can I verify Elaine Toy, M.D.'s license?
NPPES lists California license number A89718, 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 Elaine Toy, M.D. prescribe under Medicare Part D?
In 2024, Elaine Toy, M.D. had 240 Medicare Part D claims for 84 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Elaine Toy, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.