William Fisher, M.D.
Critical Care Medicine (Internal Medicine) Physician · San Diego, CA
William Fisher, M.D. is a critical care medicine (internal medicine) physician with a practice address in San Diego, California, and NPI 1245674001, issued on Apr 24, 2013. Check the license (California A137269, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Fisher
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- A137269 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8008 Frost St Ste 401, San Diego, CA 92123
- Phone
- (858) 650-5037
- Enumerated
- Apr 24, 2013
- Record last updated
- Sep 14, 2023
- Medicare enrollment
- Enrolled (PECOS I20180221002780); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 2013
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 8008 Frost St Ste 401
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gaurav Khanna, MDPulmonary Disease Physician1235319500
- Soud Sediqe, M.D.Pulmonary Disease Physician1366820540
Verify William Fisher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A137269Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
13 Medicare Part D claims, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D.
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): 73.6 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: $550.00
1 payment: compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program; the largest payer was Becton, Dickinson and Company. The 2,708 providers of this specialty with any payment received $2,958.68 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 4 group practices
- Chest Medicine And Critical Care Medical Group IncSan Diego, CA
- Emergency And Acute Care Medical CorporationSan Diego, CA
- San Francisco Critical Care Med Group IncSan Francisco, CA
- Sutter Bay Medical FoundationSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Fisher among 723 critical care medicine (internal medicine) physician records in California
William Fisher, M.D. is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 75% of them.
- NPI issued2013 · 75% of these records are older, 22% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2013 · median 2005 among the 559 with a school on file
- Record last updated2023 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in San Diego → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Juan Deza, M.D.San Diego, CA 921231407846157
- Frank GrassiSan Diego, CA 921231659342624
- Thomas Lawrie, M.D.San Diego, CA 921231124020755
- David Shaw, MDSan Diego, CA 921231205829728
- Praveen Akuthota, M.D.San Diego, CA 921211396704698
- Daniel Crouch, MDSan Diego, CA 921211710182423
- Naveen Gupta, MDSan Diego, CA 921211013015569
- Omar Mesarwi, MDSan Diego, CA 921211245430032
Common questions
What is William Fisher, M.D.'s NPI number?
William Fisher, M.D.'s National Provider Identifier (NPI) is 1245674001, issued on Apr 24, 2013. An NPI identifies a provider in billing; it is not a license.
Where is William Fisher, M.D. located?
The NPPES record lists a practice address at 8008 Frost St Ste 401, San Diego, CA, 92123. Phone: (858) 650-5037. Providers update this record themselves, so call before visiting.
How can I verify William Fisher, M.D.'s license?
NPPES lists California license number A137269, 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 Fisher, M.D. prescribe under Medicare Part D?
In 2024, William Fisher, M.D. had 13 Medicare Part D claims; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.
What is William Fisher, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.6 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.