J Am Coll Radiol
Access to InformationCommunicationMagnetic Resonance Imaging
Dr. Alexander Valentine Rybkin, MD
NPI1336137025PAC ID2062485485
- Medicare services, 2024
- 1,828
- Medicare patients, 2024
- 1,475
- Publications
- 5
- MIPS score, 2024
- 97
- Hospital affiliations
- 4
- Practice address
- 16465 Sierra Lakes Pkwy, Fontana, CA 92336
- Practice phone
- Call (909) 823-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Namita Mohideen MD Inc
Fontana, California
Find Dr. Rybkin's professional email, personal email and mobile number
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Dr. Alexander Valentine Rybkin is a diagnostic radiologist in Fontana, California
Dr. Rybkin practices at Namita Mohideen MD Inc in Fontana, California.
Dr. Rybkin's NPI, 1336137025, was assigned on October 7, 2005. Dr. Rybkin graduated from David Geffen School of Medicine at UCLA in 1999. Dr. Rybkin holds California license A75048.
NPI and contact details
- NPI
- 1336137025NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062485485
- NPI enumeration date
- October 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 823-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexander Valentine Rybkin practices at Namita Mohideen MD Inc in Fontana, California
Dr. Rybkin's primary practice is Namita Mohideen MD Inc, at 16465 Sierra Lakes Pkwy, Fontana, CA 92336 in San Bernardino County. The practice phone is (909) 823-8000.
- Namita Mohideen MD Inc16465 Sierra Lakes Pkwy, Fontana, CA 92336 · San Bernardino CountyPhone(909) 823-8000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Alexander Valentine Rybkin is affiliated with 5 sites of care and 4 medical groups
Dr. Rybkin's primary practice is Namita Mohideen MD Inc in Fontana, California. Dr. Rybkin is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. Rybkin to 3 more hospitals and 3 medical groups, each named with a free account.
Namita Mohideen MD IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alexander Valentine Rybkin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rybkin practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Namita Mohideen MD Inc | 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. Alexander Valentine Rybkin is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Rybkin's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Rybkin is board certified in diagnostic radiology by the American Board of Radiology. Dr. Rybkin is licensed in California.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
Diagnostic radiologists near Dr. Rybkin
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. Alexander Valentine Rybkin billed Medicare for 1,828 services in 2024
CMS data shows 1,828 Medicare services from Dr. Rybkin across 20 procedure codes in 2024, for 1,475 Medicare patients. Medicare paid $109,358 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 20241,828
Medicare patients1,475
Paid by Medicare$109,358
Procedure codes20
Dr. Rybkin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,8762024: 1,8054%
- Tests and treatments
- 2023: 722024: 2368%
Dr. Rybkin compared with the California median for diagnostic radiologists, 2024
- Dr. Rybkin
- California median
- Medicare services
- 1,828vs 2,28120% below
- Medicare patients
- 1,475vs 1,34610% above
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. Rybkin'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Rybkin and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexander Valentine Rybkin treated 1,475 Medicare patients in 2024, average age 72
CMS counts 1,475 Medicare patients who saw Dr. Rybkin in 2024. The largest group is 65 to 74, with 711 patients. 73% of them have high blood pressure, and 58% have high cholesterol. 91% are also on Medicaid. Their average risk score is 2.04, 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. Rybkin's median patient age at 66, with 42% women.
Medicare patients, 20241,475
Average age72
Average risk score2.04
Also on Medicaid91%
Dr. Rybkin's Medicare patients by age, 2024
Dr. Rybkin's Medicare patients by sex, 2024
- Women68046%
- Men79554%
Chronic conditions among Dr. Rybkin's Medicare patients, 2024
- High blood pressure73%
- High cholesterol58%
- Diabetes43%
- Mood disorders30%
- Arthritis29%
- Chronic kidney disease29%
- Depression27%
- Anxiety22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rybkin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women42%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexander Valentine Rybkin scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Rybkin for performance year 2024, reported as part of a group. Dr. Rybkin accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Rybkin's MIPS scores, performance year 2024
- 97of 100Final score
- 89.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Alexander Valentine Rybkin has 5 publications on record
Dmand AI links 5 papers to Dr. Rybkin, published from 2014 to 2015. The most frequent topics are Magnetic Resonance Imaging and Tomography, X-Ray Computed. Dr. Rybkin's most frequent co-authors are Rizwan Aslam, MD, Miguel C. Cabarrus, MD and Alexander W. Keedy, MD.
Papers5
Years published2014 to 2015
Topics Dr. Rybkin writes about most
- Magnetic Resonance Imaging
- Tomography, X-Ray Computed
Dr. Rybkin's most frequent co-authors
- Rizwan Aslam, MD1 shared paper
- Miguel C. Cabarrus, MD1 shared paper
- Alexander W. Keedy, MD1 shared paper
Recent publications by Dr. Rybkin
Radiol Clin North Am
Abdomen, AcuteAppendicitisAppendix
J Comput Assist Tomogr
Area Under CurveContrast MediaHypertension, Portal
Hospitals, GeneralLocal Area NetworksRadiology Information Systems
See who Dr. Rybkin researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Rybkin works with, so you can find a warm path to the right diagnostic radiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Alexander Valentine Rybkin received $14 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Rybkin from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Siemens Medical Solutions USA, Inc. paid the most, $14.
Companies that paid Dr. Rybkin the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alexander Valentine Rybkin graduated from David Geffen School of Medicine at UCLA
Dr. Rybkin graduated from David Geffen School of Medicine at UCLA in 1999.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. Alexander Valentine Rybkin accepts plans from 1 insurance carrier
Dr. Rybkin is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Alexander Valentine Rybkin'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 DataDmand AI Org Hierarchy 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)Clinician Public Reporting: Overall MIPS Performance (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 |
| 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. Alexander Valentine Rybkin
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. Alexander Valentine Rybkin's NPI number?
Dr. Alexander Valentine Rybkin's NPI number is 1336137025. It was assigned on October 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander Valentine Rybkin?
Dr. Alexander Valentine Rybkin is a diagnostic radiologist in Fontana, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Alexander Valentine Rybkin practice?
Dr. Rybkin practices at 16465 Sierra Lakes Pkwy, Fontana, CA 92336. Dr. Rybkin's primary practice is Namita Mohideen MD Inc in Fontana, California. Dmand AI also links Dr. Rybkin to 3 hospitals and 3 medical groups.
What is Dr. Alexander Valentine Rybkin's office phone number?
The practice phone on file for Dr. Rybkin is (909) 823-8000.
What is Dr. Alexander Valentine Rybkin's medical license number?
Dr. Rybkin holds California license A75048.
Which hospitals is Dr. Alexander Valentine Rybkin affiliated with?
Dr. Rybkin is affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. Dmand AI links Dr. Rybkin to 3 more hospitals.
What medical group is Dr. Alexander Valentine Rybkin part of?
Dr. Rybkin is linked to UCSF Pediatrics. Dmand AI links Dr. Rybkin to 3 more medical groups.
Does Dr. Alexander Valentine Rybkin accept Medicare?
Yes. CMS data shows Dr. Rybkin billed Medicare for 1,828 services in 2024, and Dr. Rybkin accepts Medicare assignment.
What is Dr. Alexander Valentine Rybkin's MIPS score?
Dr. Rybkin's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Dr. Alexander Valentine Rybkin see?
CMS counts 1,475 Medicare patients who saw Dr. Rybkin in 2024, with an average age of 72.
Show 8 more questionsShow fewer questions
Is Dr. Alexander Valentine Rybkin board certified?
Yes. Dr. Rybkin is board certified in diagnostic radiology by the American Board of Radiology.
What services does Dr. Alexander Valentine Rybkin bill to Medicare?
In 2024, Dr. Rybkin's most billed Medicare services were diagnostic imaging (74177), diagnostic imaging (74183) and diagnostic imaging (74174).
Where did Dr. Alexander Valentine Rybkin go to medical school?
Dr. Rybkin graduated from David Geffen School of Medicine at UCLA in 1999.
Has Dr. Alexander Valentine Rybkin received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Dr. Rybkin from 1 company from 2016 to 2016. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. Alexander Valentine Rybkin been practicing?
Dr. Rybkin graduated from medical school in 1999, 27 years ago.
Does Dr. Alexander Valentine Rybkin do research?
Dmand AI links 5 publications to Dr. Rybkin, published from 2014 to 2015.
Who does Dr. Alexander Valentine Rybkin publish with?
Dr. Rybkin's most frequent co-authors are Rizwan Aslam, MD (1 shared paper), Miguel C. Cabarrus, MD (1 shared paper) and Alexander W. Keedy, MD (1 shared paper).
What insurance does Dr. Alexander Valentine Rybkin accept?
Dr. Rybkin is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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