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Dr. Frederick J. Karubian, MD
NPI1275613655
- Medicare services, 2016
- 537
- Part D claims, 2024
- 25
- Publications
- 1
- Industry payments
- $150
- Affiliated sites
- 1
- Practice address
- 412 W Carroll Ave, Glendora, CA 91741
- Practice phone
- Call (626) 963-1413
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Zhiwen Lu MD Inc
Glendora, California
Find Dr. Karubian's professional email, personal email and mobile number
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Dr. Frederick J. Karubian is a nephrologist in Glendora, California
Dr. Karubian practices at Zhiwen Lu MD Inc in Glendora, California.
Dr. Karubian's NPI, 1275613655, was assigned on October 17, 2006. Dr. Karubian graduated from Universidad Autonoma de Guadalajara in 1983. Dr. Karubian's California license number on file is A42957.
NPI and contact details
- NPI
- 1275613655NPI Registry (opens in a new tab)
- NPI enumeration date
- October 17, 2006
- NPI status
- Active
- Practice phone
- (626) 963-1413
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Frederick J. Karubian practices at Zhiwen Lu MD Inc in Glendora, California
Dr. Karubian's primary practice is Zhiwen Lu MD Inc, at 412 W Carroll Ave, Glendora, CA 91741 in Los Angeles County. The practice phone is (626) 963-1413.
- Zhiwen Lu MD Inc412 W Carroll Ave, Glendora, CA 91741 · Los Angeles CountyPhone(626) 963-1413
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Frederick J. Karubian is affiliated with 2 sites of care
Dr. Karubian's primary practice is Zhiwen Lu MD Inc in Glendora, California. Dmand AI also links Dr. Karubian to 1 physician office, named with a free account.
Zhiwen Lu MD IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Frederick J. Karubian's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Karubian practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Zhiwen Lu MD Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Frederick J. Karubian is one of 1,401 nephrologists in California
Nephrology is Dr. Karubian's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Karubian has a license on file in California.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
Nephrologists near Dr. Karubian
Counts of nephrologists 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. Frederick J. Karubian billed Medicare for 537 services in 2016
CMS data shows 537 Medicare services from Dr. Karubian across 6 procedure codes in 2016. Medicare paid $31,428 for them.
Medicare services, 2016537
Paid by Medicare$31,428
Procedure codes6
Dr. Karubian's Medicare services by type, 2016
- Office and hospital visits488
- Surgery32
- Tests and treatments17
Where Dr. Karubian's Medicare services took place, 2016
- In an office16831%
- In a facility36969%
Dr. Karubian compared with the California median for nephrologists, 2016
- Dr. Karubian
- California median
- Medicare services
- 537vs 1,08450% below
- Part D claims
- 55vs 95594% below
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Karubian's most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Karubian?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Karubian and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Frederick J. Karubian's patients have a median age of 80
Across all payers, Dmand AI patient panel data puts Dr. Karubian's median patient age at 80, with 100% women.
Dr. Karubian's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 80
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Frederick J. Karubian wrote 25 Medicare Part D claims in 2024
In 2024, Dr. Karubian wrote 25 Medicare Part D claims. They cover 5 drugs, with $10,190 in total drug cost. In 2022, CMS named 55 claims across 5 drugs.
Part D claims, 202425
Drugs named by CMS5
Total drug cost$10,190
Dr. Karubian's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 552023: 55No change
Drugs named by CMS: 5 in 2023, 5 in 2022.
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
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Dr. Frederick J. Karubian has 1 publication on record
Dmand AI links 1 paper to Dr. Karubian.
Papers1
Recent publications by Dr. Karubian
See who Dr. Karubian researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Karubian works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Frederick J. Karubian received $150 in industry payments from 2016 to 2021
CMS Open Payments shows 7 general payments to Dr. Karubian from 6 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $46.
General payments to Dr. Karubian by program year, 2016 to 2021
Companies that paid Dr. Karubian the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Frederick J. Karubian graduated from Universidad Autonoma de Guadalajara
Dr. Karubian graduated from Universidad Autonoma de Guadalajara in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Frederick J. Karubian'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 Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Frederick J. Karubian
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. Frederick J. Karubian's NPI number?
Dr. Frederick J. Karubian's NPI number is 1275613655. It was assigned on October 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Frederick J. Karubian?
Dr. Frederick J. Karubian is a nephrologist in Glendora, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Frederick J. Karubian practice?
Dr. Karubian practices at 412 W Carroll Ave, Glendora, CA 91741. Dr. Karubian's primary practice is Zhiwen Lu MD Inc in Glendora, California. Dmand AI also links Dr. Karubian to 1 physician office.
What is Dr. Frederick J. Karubian's office phone number?
The practice phone on file for Dr. Karubian is (626) 963-1413.
What is Dr. Frederick J. Karubian's medical license number?
Dr. Karubian's California license number on file is A42957.
Does Dr. Frederick J. Karubian accept Medicare?
Yes. CMS data shows Dr. Karubian billed Medicare for 537 services in 2016.
What services does Dr. Frederick J. Karubian bill to Medicare?
In 2016, Dr. Karubian's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99213) and hospital inpatient care (99223).
Where did Dr. Frederick J. Karubian go to medical school?
Dr. Karubian graduated from Universidad Autonoma de Guadalajara in 1983.
What drugs does Dr. Frederick J. Karubian prescribe most?
In 2023 Medicare Part D data, Dr. Karubian's most prescribed drugs by claims were Advair Diskus, Azelastine HCl and Celecoxib.
Has Dr. Frederick J. Karubian received payments from drug or device companies?
CMS Open Payments shows $150 in general payments to Dr. Karubian from 6 companies from 2016 to 2021. The largest total came from Amgen Inc.
How long has Dr. Frederick J. Karubian been practicing?
Dr. Karubian graduated from medical school in 1983, 43 years ago.
Does Dr. Frederick J. Karubian do research?
Dmand AI links 1 publication to Dr. Karubian.
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