Masood Rustemi
- Medicare services, 2020
- 45
- Part D claims, 2024
- 43
- Industry payments
- $178
- Affiliated sites
- 3
- Medical groups
- 4
- Practice address
- 9965 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
Kaiser Permanente - Fontana Medical Center
Fontana, California
Find Masood Rustemi's professional email, personal email and mobile number
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Masood Rustemi is an internist in Fontana, California
Masood Rustemi practices at Kaiser Permanente - Fontana Medical Center in Fontana, California.
Masood Rustemi's NPI, 1407219389, was assigned on March 30, 2016. Masood Rustemi holds New York license 301005.
- NPI
- 1407219389NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850630682
- NPI enumeration date
- March 30, 2016
- 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
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Masood Rustemi practices at Kaiser Permanente - Fontana Medical Center in Fontana, California
Masood Rustemi's primary practice is Kaiser Permanente - Fontana Medical Center, at 9965 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Kaiser Permanente - Fontana Medical Center9965 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Masood Rustemi is affiliated with 4 sites of care and 4 medical groups
Masood Rustemi's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Masood Rustemi to 3 more group practices and clinics and 3 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Masood Rustemi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Masood Rustemi practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente - Fontana Medical Center | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Masood Rustemi is one of 16,751 internists in California
Internal medicine is Masood Rustemi's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Masood Rustemi is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Masood Rustemi
Counts of internists 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
Masood Rustemi billed Medicare for 45 services in 2020
CMS data shows 45 Medicare services from Masood Rustemi across 1 procedure code in 2020. Medicare paid $2,991 for them. Every service was in a facility, such as a hospital, rather than an office.
Masood Rustemi's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 1492020: 4570%
Masood Rustemi compared with the California median for internists, 2020
- Masood Rustemi
- California median
- Medicare services
- 45vs 36188% below
- Part D claims
- 27vs 42194% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Masood Rustemi's most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Masood Rustemi and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Masood Rustemi's patients have a median age of 37
Across all payers, Dmand AI patient panel data puts Masood Rustemi's median patient age at 37, with 68% women.
Masood Rustemi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women68%
- Men31%
Source: Dmand AI Patient Panel Data
Masood Rustemi wrote 43 Medicare Part D claims in 2024
In 2024, Masood Rustemi wrote 43 Medicare Part D claims for 42 patients. 77% of them were for generic drugs. CMS names the drug for 27 of them, across 2 drugs with 11 or more claims each, at $317 in total drug cost. In 2021, CMS named 153 claims across 9 drugs.
Masood Rustemi's Part D claims by kind of drug, 2024
- Generic33 claims77%
- Brand-name and other10 claims23%
Masood Rustemi's most prescribed drugs by claims, 2022
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 Masood Rustemi's Part D claims, 2024
- Antibiotics35%15 of 43 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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 1532022: 2782%
Drugs named by CMS: 2 in 2022, 9 in 2021.
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 Masood Rustemi takes part in Medicare
Masood Rustemi 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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Masood Rustemi received $178 in industry payments in 2019
CMS Open Payments shows 2 general payments to Masood Rustemi from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) paid the most, $178.
Companies that paid Masood Rustemi the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Masood Rustemi'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) |
| 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) |
| 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 Masood Rustemi
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Masood Rustemi's NPI number?
Masood Rustemi's NPI number is 1407219389. It was assigned on March 30, 2016, and it is active in the NPI Registry.
What does Masood Rustemi specialize in?
Masood Rustemi is an internist in Fontana, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Masood Rustemi practice?
Masood Rustemi practices at 9965 Sierra Ave, Fontana, CA 92335. Masood Rustemi's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. Dmand AI also links Masood Rustemi to 3 group practices and clinics and 3 medical groups.
What is Masood Rustemi's office phone number?
The practice phone on file for Masood Rustemi is (909) 427-5000.
What is Masood Rustemi's medical license number?
Masood Rustemi holds New York license 301005.
What medical group is Masood Rustemi part of?
Masood Rustemi is linked to Southern California Permanente Medical Group. Dmand AI links Masood Rustemi to 3 more medical groups.
Does Masood Rustemi accept Medicare?
Yes. CMS data shows Masood Rustemi billed Medicare for 45 services in 2020, and Masood Rustemi accepts Medicare assignment.
What services does Masood Rustemi bill to Medicare?
In 2020, Masood Rustemi's most billed Medicare services were hospital inpatient care (99232).
What drugs does Masood Rustemi prescribe most?
In 2022 Medicare Part D data, Masood Rustemi's most prescribed drugs by claims were Atorvastatin Calcium and Simvastatin.
Has Masood Rustemi received payments from drug or device companies?
CMS Open Payments shows $178 in general payments to Masood Rustemi from 1 company from 2019 to 2019. The largest total came from ZOLL Services LLC (A/K/A ZOLL LifeCor Corp).
How long has Masood Rustemi been practicing?
Masood Rustemi's NPI was assigned in 2016.
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