Masood Rustemi

  • Fontana, CA
  • Internist
NPI1407219389PAC ID1850630682
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
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Personal email
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Mobile number
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Social profiles

Primary practice

Kaiser Permanente - Fontana Medical Center

Fontana, California

See all 8 affiliations

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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 and contact details
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
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Mobile number
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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 Center
    9965 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.

See all 8 affiliations for Masood Rustemi

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.

EHR by site
SiteEHR vendor and product
Kaiser Permanente - Fontana Medical CenterAvailable with a free account
+3 more sites and 3 medical groupsAvailable 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 YorkPrimaryLicense 301005 · taxonomy 207R00000X

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.

Medicare services, 202045
Paid by Medicare$2,991
Procedure codes1

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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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.

Part D claims, 202443
Drugs named by CMS2
Total drug cost$317
Part D patients42

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.

See all prescribing by Masood Rustemi

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.

See all payments to Masood Rustemi

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Masood Rustemi's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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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