Dr. Jonathan David Grein, MD
- Publications
- 2
- MIPS score, 2024
- 93
- Industry payments
- $5,607
- Medical group
- 1
- Insurance carriers
- 13
- Practice address
- 8700 Beverly Blvd, West Hollywood, CA 90048
- Practice phone
- Call (323) 866-8600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cedars-Sinai Medical Center
West Hollywood, California
Find Dr. Grein'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. Jonathan David Grein is an internist in West Hollywood, California
Dr. Grein practices at Cedars-Sinai Medical Center in West Hollywood, California.
Dr. Grein's NPI, 1295956092, was assigned on May 1, 2007. Dr. Grein graduated from David Geffen School of Medicine at UCLA in 2004. Dr. Grein's California license number on file is A94549.
- NPI
- 1295956092NPI Registry (opens in a new tab)
- NPI enumeration date
- May 1, 2007
- NPI status
- Active
- Practice phone
- (323) 866-8600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Jonathan David Grein practices at Cedars-Sinai Medical Center in West Hollywood, California
Dr. Grein's primary practice is Cedars-Sinai Medical Center, at 8700 Beverly Blvd, West Hollywood, CA 90048 in Los Angeles County. The practice phone is (323) 866-8600.
- Cedars-Sinai Medical Center8700 Beverly Blvd, West Hollywood, CA 90048 · Los Angeles CountyPhone(323) 866-8600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jonathan David Grein is affiliated with 1 site of care and 1 medical group
Dr. Grein's primary practice is Cedars-Sinai Medical Center in West Hollywood, California. The medical group on file is Cedars-Sinai Medical Center.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jonathan David Grein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grein practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cedars-Sinai Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jonathan David Grein is one of 16,751 internists in California
Internal medicine is Dr. Grein's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Grein is board certified in infectious disease by the American Board of Internal Medicine. Dr. Grein has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Grein
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
Dr. Jonathan David Grein's patients have a median age of 56
Across all payers, Dmand AI patient panel data puts Dr. Grein's median patient age at 56, with 34% women.
Dr. Grein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women34%
- Men66%
Source: Dmand AI Patient Panel Data
Dr. Jonathan David Grein scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Grein for performance year 2024, reported as part of a group.
Dr. Grein's MIPS scores, performance year 2024
- 93of 100Final score
- 77.8of 100Quality
- 98of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 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
Dr. Jonathan David Grein has 2 publications on record
Dmand AI links 2 papers to Dr. Grein in 2013. Dr. Grein's most frequent co-authors are Colleen Suzanne Kraft, MD, Christopher J. Kratochvil, MD and Paul Silka, MD.
Dr. Grein's most frequent co-authors
- Colleen Suzanne Kraft, MD1 shared paper
- Christopher J. Kratochvil, MD1 shared paper
- Paul Silka, MD1 shared paper
Recent publications by Dr. Grein
See who Dr. Grein researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Grein works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Jonathan David Grein received $5,607 in industry payments from 2016 to 2020
CMS Open Payments shows 4 general payments to Dr. Grein from 3 drug and device companies from 2016 to 2020. Consulting fees make up the largest share, 97% of the total. Gilead Sciences, Inc. paid the most, $5,420.
General payments to Dr. Grein by program year, 2016 to 2020
General payments to Dr. Grein by kind, 2016 to 2020
- Consulting fees$5,42097%
- Food and beverage$1873%
Companies that paid Dr. Grein the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jonathan David Grein graduated from David Geffen School of Medicine at UCLA
Dr. Grein graduated from David Geffen School of Medicine at UCLA in 2004.
- Medical school
- Board certified in infectious disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Jonathan David Grein accepts plans from 13 insurance carriers
Dr. Grein is in network with 13 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Grein accepts, by number of carriers
- PPO9
- HMO6
- Medicare6
- EPO3
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Jonathan David Grein'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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 David Grein
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 David Grein's NPI number?
Dr. Jonathan David Grein's NPI number is 1295956092. It was assigned on May 1, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan David Grein?
Dr. Jonathan David Grein is an internist in West Hollywood, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jonathan David Grein practice?
Dr. Grein practices at 8700 Beverly Blvd, West Hollywood, CA 90048. Dr. Grein's primary practice is Cedars-Sinai Medical Center in West Hollywood, California.
What is Dr. Jonathan David Grein's office phone number?
The practice phone on file for Dr. Grein is (323) 866-8600.
What is Dr. Jonathan David Grein's medical license number?
Dr. Grein's California license number on file is A94549.
What medical group is Dr. Jonathan David Grein part of?
Dr. Grein is linked to Cedars-Sinai Medical Center.
What is Dr. Jonathan David Grein's MIPS score?
Dr. Grein's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
Is Dr. Jonathan David Grein board certified?
Yes. Dr. Grein is board certified in infectious disease by the American Board of Internal Medicine.
Where did Dr. Jonathan David Grein go to medical school?
Dr. Grein graduated from David Geffen School of Medicine at UCLA in 2004.
Has Dr. Jonathan David Grein received payments from drug or device companies?
CMS Open Payments shows $5,607 in general payments to Dr. Grein from 3 companies from 2016 to 2020. The largest total came from Gilead Sciences, Inc.
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How long has Dr. Jonathan David Grein been practicing?
Dr. Grein graduated from medical school in 2004, 22 years ago.
Does Dr. Jonathan David Grein do research?
Dmand AI links 2 publications to Dr. Grein.
Who does Dr. Jonathan David Grein publish with?
Dr. Grein's most frequent co-authors are Colleen Suzanne Kraft, MD (1 shared paper), Christopher J. Kratochvil, MD (1 shared paper) and Paul Silka, MD (1 shared paper).
What insurance does Dr. Jonathan David Grein accept?
Dr. Grein is in network with 13 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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