Simon Chan, M.D.
Internal Medicine Physician · Grass Valley, CA
Simon Chan, M.D. is an internal medicine physician with a practice address in Grass Valley, California, and NPI 1063431179, issued on Jul 19, 2006. Check the license (California A70465, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Simon Chan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A70465 CA
Self-reported in NPPES; status is on the state search - Practice location
- 150 Catherine LN, Grass Valley, CA 95945
- Phone
- (530) 477-9100
- Enumerated
- Jul 19, 2006
- Entity
- Type 1 · individual
Also registered at 150 Catherine LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Simon Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A70465Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
83% fewer Medicare Part D claims than the average internal medicine physician in 2024
478 Medicare Part D claims for 171 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Lansoprazole40 claims
- Sucralfate40 claims
- Amlodipine Besylate35 claims
- Metoprolol Succinate28 claims
- Atorvastatin Calcium23 claims
- Amoxicillin-Clavulanate Potass18 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.
Industry payments in 2024: $21.63
1 payment, mostly food and beverage; the largest payer was Kedrion Biopharma, Inc.. The 65,274 providers of this specialty with any payment received $2,536.66 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 or facility affiliation
- Shasta Regional Medical Group IncRedding, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
23 internal medicine physician records list a Grass Valley practice address
They are 23 of the 1,540 NPPES records with a Grass Valley practice address, and 20,403 internal medicine physician records in California.
All 23 in Grass Valley → All 20,403 in California → Every provider in Grass Valley →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Simon Chan, M.D.'s NPI number?
Simon Chan, M.D.'s National Provider Identifier (NPI) is 1063431179, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Simon Chan, M.D. located?
The NPPES record lists a practice address at 150 Catherine LN, Grass Valley, CA, 95945. Phone: (530) 477-9100. Providers update this record themselves, so call before visiting.
How can I verify Simon Chan, M.D.'s license?
NPPES lists California license number A70465, 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 Simon Chan, M.D. prescribe under Medicare Part D?
In 2024, Simon Chan, M.D. had 478 Medicare Part D claims for 171 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.