Genny Sim
Family Medicine Physician · Colton, CA
Genny Sim is a family medicine physician with a practice address in Colton, California, and NPI 1588936256, issued on Jan 27, 2012. Check the license (California 390200000, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Genny Sim
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 390200000 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 N Pepper Ave, Colton, CA 92324
- Phone
- (909) 580-1000
- Enumerated
- Jan 27, 2012
- Record last updated
- Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 400 N Pepper Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shangrila AbaricoRegistered Nurse1609659325
- Susana AbaroRegistered Nurse1114425162
- Patricia AbbaRegistered Nurse1013188838
- Mohammad Hossein Abbasi, MD, MPHStudent in an Organized Health Care Education/Training Program1609622166
- Ala AbedrabboCertified Registered Nurse Anesthetist1972333144
- Mary AboagyeLicensed Vocational Nurse1982875605
Verify Genny Sim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 390200000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family medicine physician in 2024
259 Medicare Part D claims for 133 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 15 claims were for opioids.
Most prescribed
- Prednisone12 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.
Genny Sim among 17,133 family medicine physician records in California
Genny Sim is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 66% of them.
- NPI issued2012 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
76 family medicine physician records list a practice address in Colton
They are 76 of the 2,459 NPPES records with a practice address in Colton, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Colton → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ruben Avagimov, MDColton, CA 923241558376947
- Luis Chaname, D.O.Colton, CA 923241992712830
- Rosa Cortes, M.D.Colton, CA 923241154338010
- Emily Ebert, M.D., M.P.H.Colton, CA 923241730194127
- James Evans, M.D.Colton, CA 923241104858059
- Pooja Gupta, DOColton, CA 923241497762355
- Edward Keiderling, MDColton, CA 923241457366841
- Kuang-Chih Lo, D.O.Colton, CA 923241689617904
Common questions
What is Genny Sim's NPI number?
Genny Sim's National Provider Identifier (NPI) is 1588936256, issued on Jan 27, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Genny Sim located?
The NPPES record lists a practice address at 400 N Pepper Ave, Colton, CA, 92324. Phone: (909) 580-1000. Providers update this record themselves, so call before visiting.
How can I verify Genny Sim's license?
NPPES lists California license number 390200000, 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 Genny Sim prescribe under Medicare Part D?
In 2024, Genny Sim had 259 Medicare Part D claims for 133 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.