Genny M. Sim
- Part D claims, 2024
- 259
- Hospital affiliations
- 1
- Industry payments
- $247
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-3910
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fontana Medical Center
Fontana, California
Find Genny Sim's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Genny M. Sim is a family medicine physician in Fontana, California
Genny Sim practices at Fontana Medical Center in Fontana, California.
Genny Sim's NPI, 1588936256, was assigned on January 27, 2012. Genny Sim graduated from Loma Linda University School Of Medicine in 2011. Genny Sim holds California license 390200000.
- NPI
- 1588936256NPI Registry (opens in a new tab)
- NPI enumeration date
- January 27, 2012
- NPI status
- Active
- Practice phone
- (909) 427-3910
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Genny M. Sim practices at Fontana Medical Center in Fontana, California
Genny Sim's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-3910.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-3910
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Genny M. Sim is affiliated with 2 sites of care and 1 medical group
Genny Sim's primary practice is Fontana Medical Center in Fontana, California. Genny Sim is also affiliated with Arrowhead Regional Medical Center. The medical group on file is Southern California Permanente Medical Group.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Genny M. Sim's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Genny Sim practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Genny M. Sim is one of 15,680 family medicine physicians in California
Family medicine is Genny Sim's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Genny Sim is board certified in family medicine by the American Board of Family Medicine. Genny Sim is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Family medicine physicians near Genny Sim
Counts of family medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Genny M. Sim's patients have a median age of 38
Across all payers, Dmand AI patient panel data puts Genny Sim's median patient age at 38, with 75% women.
Genny Sim's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women75%
- Men25%
Source: Dmand AI Patient Panel Data
Genny M. Sim wrote 259 Medicare Part D claims in 2024
In 2024, Genny Sim wrote 259 Medicare Part D claims for 133 patients. 92% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $129 in total drug cost. In 2023, CMS named 23 claims across 2 drugs.
Genny Sim's Part D claims by kind of drug, 2024
- Generic238 claims92%
- Brand-name21 claims8%
Genny Sim's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Genny Sim's Part D claims, 2024
- Opioids6%15 of 259 claims
- Antibiotics15%40 of 259 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 232024: 1248%
Drugs named by CMS: 1 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Genny M. Sim received $247 in industry payments in 2017
CMS Open Payments shows 2 general payments to Genny Sim from 2 drug and device companies in 2017. Food and beverage make up the largest share, 100% of the total. Celgene Corporation paid the most, $124.
Companies that paid Genny Sim the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Genny M. Sim graduated from Loma Linda University School Of Medicine
Genny Sim graduated from Loma Linda University School Of Medicine in 2011.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Genny M. Sim accepts plans from 2 insurance carriers
Genny Sim is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Genny Sim accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Genny M. Sim's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Genny M. Sim
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Genny M. Sim's NPI number?
Genny M. Sim's NPI number is 1588936256. It was assigned on January 27, 2012, and it is active in the NPI Registry.
What does Genny M. Sim specialize in?
Genny M. Sim is a family medicine physician in Fontana, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Genny M. Sim practice?
Genny Sim practices at 9961 Sierra Ave, Fontana, CA 92335. Genny Sim's primary practice is Fontana Medical Center in Fontana, California.
What is Genny M. Sim's office phone number?
The practice phone on file for Genny Sim is (909) 427-3910.
What is Genny M. Sim's medical license number?
Genny Sim holds California license 390200000.
Which hospitals is Genny M. Sim affiliated with?
Genny Sim is affiliated with Arrowhead Regional Medical Center.
What medical group is Genny M. Sim part of?
Genny Sim is linked to Southern California Permanente Medical Group.
Is Genny M. Sim board certified?
Yes. Genny Sim is board certified in family medicine by the American Board of Family Medicine.
Where did Genny M. Sim go to medical school?
Genny Sim graduated from Loma Linda University School Of Medicine in 2011.
What drugs does Genny M. Sim prescribe most?
In 2024 Medicare Part D data, Genny Sim's most prescribed drugs by claims were Prednisone.
Show 3 more questionsShow fewer questions
Has Genny M. Sim received payments from drug or device companies?
CMS Open Payments shows $247 in general payments to Genny Sim from 2 companies from 2017 to 2017. The largest total came from Celgene Corporation.
How long has Genny M. Sim been practicing?
Genny Sim graduated from medical school in 2011, 15 years ago.
What insurance does Genny M. Sim accept?
Genny Sim is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to family medicine practices?
See family medicine physicians in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card