Adam Simons, M.D.
Hospitalist Physician · San Francisco, CA
Adam Simons, M.D. is a hospitalist physician with a practice address in San Francisco, California, and NPI 1588892210, issued on Jul 1, 2009. Check the license (California 127652, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Adam Simons
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 127652 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2351 Clay St, San Francisco, CA 94115
- Phone
- (415) 600-3458
- Enumerated
- Jul 1, 2009
- Record last updated
- Sep 4, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (415) 600-3451
- Medicare enrollment
- Enrolled (PECOS I20140108000952); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 2351 Clay St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Au, M.D.Student in an Organized Health Care Education/Training Program1902148091
- Geoffrey Bailey-Gates, M.D.Student in an Organized Health Care Education/Training Program1306137708
- Christopher Brown, MDPulmonary Disease Physician1104900901
- Tze-Ming Chen, M.D.Pulmonary Disease Physician1215092705
- Ivan Cheng, MDCritical Care Medicine (Internal Medicine) Physician1639253438
- Lisa Chui, M.D.Student in an Organized Health Care Education/Training Program1689992927
Verify Adam Simons in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 127652Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average hospitalist physician in 2024
405 Medicare Part D claims for 137 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 45 claims were for opioids.
Most prescribed
- Ciprofloxacin Hcl21 claims
- Pantoprazole Sodium21 claims
- Furosemide19 claims
- Amiodarone Hcl17 claims
- Eliquis17 claims
- Hydrocodone-Acetaminophen15 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.
Bills Medicare through one group practice
- 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).
Adam Simons among 3,099 hospitalist physician records in California
Adam Simons, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 39% of them.
- NPI issued2009 · 39% of these records are older, 56% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2009 · median 2010 among the 2,505 with a school on file
- Record last updated2014 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in San Francisco → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Jonathan Alexander, MDSan Francisco, CA 941151811075450
- Elizabeth Andrews, MDSan Francisco, CA 941151023196631
- Deborah Chiarucci, MDSan Francisco, CA 941151043398647
- Joel Cho, MDSan Francisco, CA 941151568541696
- Reynaldo Cordero, MDSan Francisco, CA 941151538247192
- Pam Grewall, M.D.San Francisco, CA 941151578580445
- Brian Hoberman, MDSan Francisco, CA 941151952489551
- Jinwoo Kim, MDSan Francisco, CA 941151336227974
Common questions
What is Adam Simons, M.D.'s NPI number?
Adam Simons, M.D.'s National Provider Identifier (NPI) is 1588892210, issued on Jul 1, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Adam Simons, M.D. located?
The NPPES record lists a practice address at 2351 Clay St, San Francisco, CA, 94115. Phone: (415) 600-3458. Providers update this record themselves, so call before visiting.
How can I verify Adam Simons, M.D.'s license?
NPPES lists California license number 127652, 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 Adam Simons, M.D. prescribe under Medicare Part D?
In 2024, Adam Simons, M.D. had 405 Medicare Part D claims for 137 beneficiaries; the average among hospitalist physician prescribers was 521. 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.