Dr. Sin S. Ku, MD
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 297
- Hospital affiliations
- 1
- Industry payments
- $13
- Medical group
- 1
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ku'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.
Dr. Sin S. Ku is a family medicine physician in Fontana, California
Dr. Ku practices at Fontana Medical Center in Fontana, California, part of Kaiser Permanente.
Dr. Ku's NPI, 1912074857, was assigned on November 29, 2006. Dr. Ku graduated from Loma Linda University School Of Medicine in 1995. Dr. Ku holds California license A64824.
- NPI
- 1912074857NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3476618141
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sin S. Ku practices at Fontana Medical Center in Fontana, California
Dr. Ku's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Source: Dmand AI Affiliation Data
Dr. Sin S. Ku is affiliated with 1 site of care and 1 medical group
Dr. Ku's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sin S. Ku's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ku practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sin S. Ku is one of 15,680 family medicine physicians in California
Family medicine is Dr. Ku's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Ku is board certified in family medicine by the American Board of Family Medicine. Dr. Ku is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Family medicine physicians near Dr. Ku
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
Dr. Sin S. Ku treated 11 Medicare patients in 2024, average age 59
CMS counts 11 Medicare patients who saw Dr. Ku in 2024. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ku's median patient age at 40, with 71% women.
Dr. Ku's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women71%
- Men29%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sin S. Ku wrote 297 Medicare Part D claims in 2024
In 2024, Dr. Ku wrote 297 Medicare Part D claims for 234 patients. 87% of them were for generic drugs. CMS names the drug for 172 of them, across 6 drugs with 11 or more claims each, at $1,652 in total drug cost. In 2023, CMS named 115 claims across 6 drugs.
Dr. Ku's Part D claims by kind of drug, 2024
- Generic258 claims87%
- Brand-name and other39 claims13%
Dr. Ku'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 Dr. Ku's Part D claims, 2024
- Antibiotics54%160 of 297 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: 1152024: 17250%
Drugs named by CMS: 6 in 2024, 6 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
How Dr. Sin S. Ku takes part in Medicare
Dr. Ku accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Sin S. Ku received $13 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Ku from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Mylan Inc. paid the most, $13.
Companies that paid Dr. Ku the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sin S. Ku graduated from Loma Linda University School Of Medicine
Dr. Ku graduated from Loma Linda University School Of Medicine in 1995.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Sin S. Ku accepts plans from 2 insurance carriers
Dr. Ku 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 Dr. Ku accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Sin S. Ku'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 Dr. Sin S. Ku
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Sin S. Ku's NPI number?
Dr. Sin S. Ku's NPI number is 1912074857. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Sin S. Ku?
Dr. Sin S. Ku is a family medicine physician in Fontana, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Sin S. Ku practice?
Dr. Ku practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Ku's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente.
What is Dr. Sin S. Ku's office phone number?
The practice phone on file for Dr. Ku is (909) 427-5000.
What is Dr. Sin S. Ku's medical license number?
Dr. Ku holds California license A64824.
Which hospitals is Dr. Sin S. Ku affiliated with?
Dr. Ku practices at Fontana Medical Center in Fontana, California.
What medical group is Dr. Sin S. Ku part of?
Dr. Ku is linked to Southern California Permanente Medical Group.
Does Dr. Sin S. Ku accept Medicare?
Yes. CMS lists Dr. Ku as accepting Medicare assignment.
How many Medicare patients does Dr. Sin S. Ku see?
CMS counts 11 Medicare patients who saw Dr. Ku in 2024, with an average age of 59.
Is Dr. Sin S. Ku board certified?
Yes. Dr. Ku is board certified in family medicine by the American Board of Family Medicine.
Show 5 more questionsShow fewer questions
Where did Dr. Sin S. Ku go to medical school?
Dr. Ku graduated from Loma Linda University School Of Medicine in 1995.
What drugs does Dr. Sin S. Ku prescribe most?
In 2024 Medicare Part D data, Dr. Ku's most prescribed drugs by claims were Doxycycline Monohydrate, Cephalexin and Prednisone.
Has Dr. Sin S. Ku received payments from drug or device companies?
CMS Open Payments shows $13 in general payments to Dr. Ku from 1 company from 2017 to 2017. The largest total came from Mylan Inc.
How long has Dr. Sin S. Ku been practicing?
Dr. Ku graduated from medical school in 1995, 31 years ago.
What insurance does Dr. Sin S. Ku accept?
Dr. Ku 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.
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