Dr. Ammar Istwani, MD
- Medicare services, 2024
- 3,142
- Medicare patients, 2024
- 2,150
- Hospital affiliations
- 2
- Industry payments
- $163
- Medical groups
- 4
- Practice address
- 3000 Q St Fl 1 Fl 1, Sacramento, CA 95816-7058
- Practice phone
- Call (916) 560-0319
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mercy Medical Group, A Service Of Dignity Health Medical Foundation
Multi-specialty group site · Sacramento, California
Find Dr. Istwani'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. Ammar Istwani is a diagnostic radiologist in Sacramento, California
Dr. Istwani practices at Mercy Medical Group, A Service Of Dignity Health Medical Foundation in Sacramento, California.
Dr. Istwani's NPI, 1386683258, was assigned on June 6, 2006. Dr. Istwani graduated from Ohio State College of Medicine in 1992. Dr. Istwani holds California license G80027.
- NPI
- 1386683258NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072593268
- NPI enumeration date
- June 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (916) 560-0319
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ammar Istwani practices at Mercy Medical Group, A Service of Dignity Health Medical Foundation in Sacramento, California
Dr. Istwani's primary practice is Mercy Medical Group, A Service of Dignity Health Medical Foundation, at 3000 Q St Fl 1 Fl 1, Sacramento, CA 95816-7058. The practice phone is (916) 560-0319.
- Mercy Medical Group, A Service of Dignity Health Medical Foundation3000 Q St Fl 1 Fl 1, Sacramento, CA 95816-7058Phone(916) 560-0319
Source: Dmand AI Affiliation Data
Dr. Ammar Istwani is affiliated with 5 sites of care and 4 medical groups
Dr. Istwani's primary practice is Mercy Medical Group, A Service Of Dignity Health Medical Foundation in Sacramento, California. Dr. Istwani is also affiliated with Dignity Health - Dominican Hospital. The medical group on file is Mercy Medical Group. Dmand AI also links Dr. Istwani to 1 more hospital, 3 medical groups and 2 group practices and clinics, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ammar Istwani's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Istwani practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Medical Group, A Service Of Dignity Health Medical Foundation | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ammar Istwani is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Istwani's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Istwani is board certified in diagnostic radiology by the American Board of Radiology. Dmand AI has Dr. Istwani's licenses on file in 2 states: California and New Jersey.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
- New Jersey license
Diagnostic radiologists near Dr. Istwani
Counts of diagnostic radiologists 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. Ammar Istwani billed Medicare for 3,142 services in 2024
CMS data shows 3,142 Medicare services from Dr. Istwani across 46 procedure codes in 2024, for 2,150 Medicare patients. Medicare paid $65,933 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Istwani's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,3082024: 3,058134%
- Tests and treatments
- 2023: 02024: 84
Dr. Istwani compared with the California median for diagnostic radiologists, 2024
- Dr. Istwani
- California median
- Medicare services
- 3,142vs 2,28138% above
- Medicare patients
- 2,150vs 1,34660% above
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. Istwani's most billed Medicare procedure codes, 2024
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. Istwani?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Istwani and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ammar Istwani treated 2,150 Medicare patients in 2024, average age 75
CMS counts 2,150 Medicare patients who saw Dr. Istwani in 2024. The largest group is 75 to 84, with 779 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 34% are also on Medicaid. Their average risk score is 2.02, 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. Istwani's median patient age at 64, with 57% women.
Dr. Istwani's Medicare patients by age, 2024
Dr. Istwani's Medicare patients by sex, 2024
- Women1,15354%
- Men99746%
Chronic conditions among Dr. Istwani's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Arthritis55%
- Mood disorders37%
- Atrial fibrillation36%
- Chronic kidney disease36%
- Ischemic heart disease36%
- Heart failure35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Istwani's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Ammar Istwani takes part in Medicare
Dr. Istwani 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. Ammar Istwani received $163 in industry payments from 2016 to 2022
CMS Open Payments shows 6 general payments to Dr. Istwani from 5 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Medtronic Vascular, Inc. paid the most, $60.
General payments to Dr. Istwani by program year, 2016 to 2022
Companies that paid Dr. Istwani the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ammar Istwani graduated from Ohio State College of Medicine
Dr. Istwani graduated from Ohio State College of Medicine in 1992.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. Ammar Istwani accepts plans from 2 insurance carriers
Dr. Istwani is in network with 2 carriers, including LA Care and DE State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
- LA Care
- DE State Medicaid
Plan types Dr. Istwani accepts, by number of carriers
- Medicaid2
- HMO1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ammar Istwani'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 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 DataMedicare Physician & Other Practitioners - 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. Ammar Istwani
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. Ammar Istwani's NPI number?
Dr. Ammar Istwani's NPI number is 1386683258. It was assigned on June 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ammar Istwani?
Dr. Ammar Istwani is a diagnostic radiologist in Sacramento, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Ammar Istwani practice?
Dr. Istwani practices at 3000 Q St Fl 1 Fl 1, Sacramento, CA 95816-7058. Dr. Istwani's primary practice is Mercy Medical Group, A Service Of Dignity Health Medical Foundation in Sacramento, California. Dmand AI also links Dr. Istwani to 1 hospital, 3 medical groups and 2 group practices and clinics.
What is Dr. Ammar Istwani's office phone number?
The practice phone on file for Dr. Istwani is (916) 560-0319.
What is Dr. Ammar Istwani's medical license number?
Dr. Istwani holds California license G80027, one of the licenses on file in 2 states.
Which states has Dr. Ammar Istwani been licensed in?
Dmand AI has state licenses on file for Dr. Istwani in California (1994 to 2026) and New Jersey (since 1994).
Which hospitals is Dr. Ammar Istwani affiliated with?
Dr. Istwani is affiliated with Dignity Health - Dominican Hospital. Dmand AI links Dr. Istwani to 1 more hospital.
What medical group is Dr. Ammar Istwani part of?
Dr. Istwani is linked to Mercy Medical Group. Dmand AI links Dr. Istwani to 3 more medical groups.
Does Dr. Ammar Istwani accept Medicare?
Yes. CMS data shows Dr. Istwani billed Medicare for 3,142 services in 2024, and Dr. Istwani accepts Medicare assignment.
How many Medicare patients does Dr. Ammar Istwani see?
CMS counts 2,150 Medicare patients who saw Dr. Istwani in 2024, with an average age of 75.
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Is Dr. Ammar Istwani board certified?
Yes. Dr. Istwani is board certified in diagnostic radiology by the American Board of Radiology.
What services does Dr. Ammar Istwani bill to Medicare?
In 2024, Dr. Istwani's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (70450) and diagnostic imaging (74177).
Where did Dr. Ammar Istwani go to medical school?
Dr. Istwani graduated from Ohio State College of Medicine in 1992.
Has Dr. Ammar Istwani received payments from drug or device companies?
CMS Open Payments shows $163 in general payments to Dr. Istwani from 5 companies from 2016 to 2022. The largest total came from Medtronic Vascular, Inc.
How long has Dr. Ammar Istwani been practicing?
Dr. Istwani graduated from medical school in 1992, 34 years ago.
What insurance does Dr. Ammar Istwani accept?
Dr. Istwani is in network with 2 carriers, including LA Care and DE State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
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