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Dr. Jonathan Posin, MD
NPI1396780425PAC ID8224018049
- Medicare services, 2024
- 6,736
- Medicare patients, 2024
- 5,268
- Publications
- 7
- MIPS score, 2024
- 97
- Hospital affiliations
- 5
- Practice address
- 2540 East St, Concord, CA 94520
- Practice phone
- Call (925) 682-8200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Posin's professional email, personal email and mobile number
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Dr. Jonathan Posin is a diagnostic radiologist in Concord, California
Dr. Posin practices at Concord Medical Center in Concord, California, part of John Muir Health.
Dr. Posin's NPI, 1396780425, was assigned on June 20, 2006. Dr. Posin graduated from Tufts University School Of Medicine in 1979. Dr. Posin holds California license G47350.
NPI and contact details
- NPI
- 1396780425NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224018049
- NPI enumeration date
- June 20, 2006
- NPI status
- Active
- Practice phone
- (925) 682-8200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jonathan Posin practices at Concord Medical Center in Concord, California
Dr. Posin's primary practice is Concord Medical Center, at 2540 East St, Concord, CA 94520 in Contra Costa County. The practice phone is (925) 682-8200.
- Concord Medical Center2540 East St, Concord, CA 94520 · Contra Costa CountyPhone(925) 682-8200
Source: Dmand AI Affiliation Data
Dr. Jonathan Posin is affiliated with 11 sites of care and 7 medical groups
Dr. Posin's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dr. Posin is also affiliated with Zuckerberg San Francisco General Hospital and Trauma Center. The medical group on file is John Muir Health. Dmand AI also links Dr. Posin to 3 more hospitals, 6 group practices and clinics and 6 medical groups, each named with a free account.
Zuckerberg San Francisco General Hospital and Trauma CenterJohn Muir Health3 hospitalsNames with a free account6 group practices and clinicsNames with a free account6 medical groupsNames with a free account
See all 18 affiliations for Dr. PosinSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jonathan Posin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Posin practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Concord Medical Center | Available with a free account |
| +10 more sites and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Jonathan Posin is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Posin's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Posin is board certified in diagnostic radiology by the American Board of Radiology. Dr. Posin is licensed in California.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
Diagnostic radiologists near Dr. Posin
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
4,096diagnostic radiologists in California25diagnostic radiologists in Concord3diagnostic radiologists at Concord Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jonathan Posin billed Medicare for 6,736 services in 2024
CMS data shows 6,736 Medicare services from Dr. Posin across 64 procedure codes in 2024, for 5,268 Medicare patients. Medicare paid $139,418 for them.
Medicare services, 20246,736
Medicare patients5,268
Paid by Medicare$139,418
Procedure codes64
Dr. Posin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 7,4352024: 6,11418%
- Tests and treatments
- 2023: 4232024: 3849%
- Other services
- 2023: 1732024: 22731%
- Surgery
- 2023: 122024: 118%
Where Dr. Posin's Medicare services took place, 2024
- In an office1,01315%
- In a facility5,72385%
Dr. Posin compared with the California median for diagnostic radiologists, 2024
- Dr. Posin
- California median
- Medicare services
- 6,736vs 2,2813.0 times
- Medicare patients
- 5,268vs 1,3463.9 times
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. Posin'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. Posin?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Posin and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonathan Posin treated 5,268 Medicare patients in 2024, average age 76
CMS counts 5,268 Medicare patients who saw Dr. Posin in 2024. The largest group is 65 to 74, with 2,191 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 17% are also on Medicaid. Their average risk score is 1.43, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Posin's median patient age at 61, with 69% women.
Medicare patients, 20245,268
Average age76
Average risk score1.43
Also on Medicaid17%
Dr. Posin's Medicare patients by age, 2024
Dr. Posin's Medicare patients by sex, 2024
- Women3,58868%
- Men1,68032%
Chronic conditions among Dr. Posin's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis47%
- Osteoporosis29%
- Chronic kidney disease28%
- Diabetes25%
- Ischemic heart disease25%
- Mood disorders25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Posin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women69%
- Men28%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonathan Posin 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. Posin for performance year 2024, reported as part of a group.
Dr. Posin'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.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Jonathan Posin has 7 publications on record
Dmand AI links 7 papers to Dr. Posin. The most frequent topics are Magnetic Resonance Spectroscopy, Brain Diseases and Brain Neoplasms. Dr. Posin has published most often in Radiology. Dr. Posin's most frequent co-authors are Catherine Marie Mills, MD, David Allen Feinberg, MD and Michael N. Brant-Zawadzki, MD.
Papers7
Topics Dr. Posin writes about most
- Magnetic Resonance Spectroscopy
- Brain Diseases
- Brain Neoplasms
- Hydrogen
- Tomography, X-Ray Computed
Dr. Posin's most frequent co-authors
- Catherine Marie Mills, MD4 shared papers
- David Allen Feinberg, MD3 shared papers
- Michael N. Brant-Zawadzki, MD1 shared paper
Recent publications by Dr. Posin
Biopsy, NeedleEmbolism, AirHyperbaric Oxygenation
Brain DiseasesBrain EdemaBrain Neoplasms
Radiology
Brain NeoplasmsHydrogenMagnetic Resonance Spectroscopy
BrainBrain DiseasesHydrogen
See who Dr. Posin researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Posin 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. Jonathan Posin received $215 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Posin from 1 drug or device company in 2019. Consulting fees make up the largest share, 100% of the total. Varian Medical Systems, Inc. paid the most, $215.
Companies that paid Dr. Posin the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jonathan Posin graduated from Tufts University School Of Medicine
Dr. Posin graduated from Tufts University School Of Medicine in 1979.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. Jonathan Posin accepts plans from 6 insurance carriers
Dr. Posin is in network with 6 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- HCSC
Plan types Dr. Posin accepts, by number of carriers
- PPO3
- Medicare2
- POS2
- EPO1
- HMO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Jonathan Posin'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 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 | 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. Jonathan Posin
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. Jonathan Posin's NPI number?
Dr. Jonathan Posin's NPI number is 1396780425. It was assigned on June 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan Posin?
Dr. Jonathan Posin is a diagnostic radiologist in Concord, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Jonathan Posin practice?
Dr. Posin practices at 2540 East St, Concord, CA 94520. Dr. Posin's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dmand AI also links Dr. Posin to 3 hospitals, 6 group practices and clinics and 6 medical groups.
What is Dr. Jonathan Posin's office phone number?
The practice phone on file for Dr. Posin is (925) 682-8200.
What is Dr. Jonathan Posin's medical license number?
Dr. Posin holds California license G47350.
Which hospitals is Dr. Jonathan Posin affiliated with?
Dr. Posin practices at Concord Medical Center in Concord, California. Dr. Posin is also affiliated with Zuckerberg San Francisco General Hospital and Trauma Center. Dmand AI links Dr. Posin to 3 more hospitals.
What medical group is Dr. Jonathan Posin part of?
Dr. Posin is linked to John Muir Health. Dmand AI links Dr. Posin to 6 more medical groups.
Does Dr. Jonathan Posin accept Medicare?
Yes. CMS data shows Dr. Posin billed Medicare for 6,736 services in 2024.
What is Dr. Jonathan Posin's MIPS score?
Dr. Posin'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. Jonathan Posin see?
CMS counts 5,268 Medicare patients who saw Dr. Posin in 2024, with an average age of 76.
Show 8 more questionsShow fewer questions
Is Dr. Jonathan Posin board certified?
Yes. Dr. Posin is board certified in diagnostic radiology by the American Board of Radiology.
What services does Dr. Jonathan Posin bill to Medicare?
In 2024, Dr. Posin's most billed Medicare services were diagnostic imaging (71045), radiation oncology (77080) and diagnostic imaging (71046).
Where did Dr. Jonathan Posin go to medical school?
Dr. Posin graduated from Tufts University School Of Medicine in 1979.
Has Dr. Jonathan Posin received payments from drug or device companies?
CMS Open Payments shows $215 in general payments to Dr. Posin from 1 company from 2019 to 2019. The largest total came from Varian Medical Systems, Inc.
How long has Dr. Jonathan Posin been practicing?
Dr. Posin graduated from medical school in 1979, 47 years ago.
Does Dr. Jonathan Posin do research?
Dmand AI links 7 publications to Dr. Posin.
Who does Dr. Jonathan Posin publish with?
Dr. Posin's most frequent co-authors are Catherine Marie Mills, MD (4 shared papers), David Allen Feinberg, MD (3 shared papers) and Michael N. Brant-Zawadzki, MD (1 shared paper).
What insurance does Dr. Jonathan Posin accept?
Dr. Posin is in network with 6 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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