William Robert Corn, MD
Neurological Surgery Physician · San Francisco, CA
William Robert Corn, MD is a neurological surgery physician with a practice address in San Francisco, California, and NPI 1962457903, issued on May 24, 2006. Check the license (California G68193, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Robert Corn
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- G68193 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1001 Potrero Ave, San Francisco, CA 94110
- Phone
- (415) 206-4353
- Enumerated
- May 24, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (415) 476-5582
- Medicaid ID
- 00G681930 CA
- Medicare enrollment
- Enrolled (PECOS I20080806000539); accepts Medicare assignment
- Medical or professional school
- Eastern Virginia Medical School, 1988
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 929 in California → Look up another NPI →
Also registered at 1001 Potrero Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Abbs, M.D.Internal Medicine Physician1295269983
- Atokena AbeStudent in an Organized Health Care Education/Training Program1043130149
- Mary Ann AbilleRegistered Nurse1699155804
- Nasrin Aboudamous, FNPFamily Nurse Practitioner1699579912
- Elizabeth AdvientoRegistered Nurse1124968987
- Rocio Agraz-Lara, RN, PHNRegistered Nurse1003075995
Verify William Robert Corn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G68193Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average neurological surgery physician in 2024
17 Medicare Part D claims, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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): 91.9 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: $13.50
1 payment: food and beverage; the largest payer was Abbvie Inc. The 5,377 providers of this specialty with any payment received $14,925.58 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 2 group practices
- City And County OF San FranciscoSan Francisco, CA
- University OF California Sfgh Medical GroupSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Robert Corn among 929 neurological surgery physician records in California
William Robert Corn, MD is one of 929 neurological surgery physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 62% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1988 · median 2005 among the 612 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in California
There are 929 neurological surgery physician records in California.
All 929 in California → Every provider in San Francisco → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Ernest BarthelemySan Francisco, CA 941101467871442
- Grant Gauger, MDSan Francisco, CA 941101417901463
- Michael Huang, M.D.San Francisco, CA 941101760633770
- Mathieu Laroche, M.D., FRCSCSan Francisco, CA 941101801108980
- Geoffrey Manley, MD PHDSan Francisco, CA 941101588619241
- Guy Rosenthal, MDSan Francisco, CA 941101871547331
- Shirley Stiver, MD PHDSan Francisco, CA 941101508810904
- Lewis Leng, M.D.San Francisco, CA 941091508018508
Common questions
What is William Robert Corn, MD's NPI number?
William Robert Corn, MD's National Provider Identifier (NPI) is 1962457903, issued on May 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Robert Corn, MD located?
The NPPES record lists a practice address at 1001 Potrero Ave, San Francisco, CA, 94110. Phone: (415) 206-4353. Providers update this record themselves, so call before visiting.
How can I verify William Robert Corn, MD's license?
NPPES lists California license number G68193, 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 William Robert Corn, MD prescribe under Medicare Part D?
In 2024, William Robert Corn, MD had 17 Medicare Part D claims; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.
What is William Robert Corn, MD's MIPS final score?
The 2023 MIPS final score is 91.9 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.