Michael Spencer Leong, MD
Pain Medicine (Anesthesiology) Physician · Stanford, CA
Michael Spencer Leong, MD is a pain medicine (anesthesiology) physician with a practice address in Stanford, California, and NPI 1316073109, issued on Feb 26, 2007. Check the license (California A53960, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Spencer Leong
- Credential
- MD
- Primary taxonomy
- Pain Medicine (Anesthesiology) Physician 207LP2900X
- License number
- A53960 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 720-4000
- Enumerated
- Feb 26, 2007
- Record last updated
- Apr 11, 2024
- Medicare enrollment
- Enrolled (PECOS I20070612000850); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pain medicine (anesthesiology) physician records → All 536 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Spencer Leong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A53960Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average pain medicine (anesthesiology) physician in 2024
166 Medicare Part D claims for 54 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin56 claims
- Pregabalin32 claims
- Baclofen17 claims
- Duloxetine Hcl17 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): 76.5 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: $2,075.05
19 payments; by number, the most common kind was food and beverage; the largest payer was Mml US, Inc. The 2,789 providers of this specialty with any payment received $3,225.41 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.
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Michael Spencer Leong among 536 pain medicine (anesthesiology) physician records in California
Michael Spencer Leong, MD is one of 536 pain medicine (anesthesiology) physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1993 · median 2004 among the 367 with a school on file
- Record last updated2024 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pain Medicine (Anesthesiology) Physician providers in California
There are 536 pain medicine (anesthesiology) physician records in California.
All 536 in California → Every provider in Stanford → Pain Medicine (Anesthesiology) Physician nationwide →
The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes
- Jane Ahn, M.D.Stanford, CA 943051043338296
- William Brose, MDStanford, CA 943051164452744
- Ian Carroll, MDStanford, CA 943051922148931
- Stephen Coleman, MDStanford, CA 943051679517635
- Jennifer Hah, MDStanford, CA 943051366639445
- Michele Jehenson, DDSStanford, CA 943051649445826
- Jiang-Ti Kong, MDStanford, CA 943051871780098
- Elliot Krane, M.D.Stanford, CA 943051992860621
Common questions
What is Michael Spencer Leong, MD's NPI number?
Michael Spencer Leong, MD's National Provider Identifier (NPI) is 1316073109, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael Spencer Leong, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 720-4000. Providers update this record themselves, so call before visiting.
How can I verify Michael Spencer Leong, MD's license?
NPPES lists California license number A53960, 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 Michael Spencer Leong, MD prescribe under Medicare Part D?
In 2024, Michael Spencer Leong, MD had 166 Medicare Part D claims for 54 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. Part D covers Medicare prescriptions only.
What is Michael Spencer Leong, MD's MIPS final score?
The 2023 MIPS final score is 76.5 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.