Dr. Issac X. Grinberg, MD
- Medicare services, 2024
- 3,840
- Medicare patients, 2024
- 2,015
- Part D claims, 2024
- 4,192
- MIPS score, 2024
- 75
- Hospital affiliations
- 3
- Practice address
- 47601 Grand River Ave, Novi, MI 48374
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St John Hospital and Medical Center - Assarian Cancer Center - HOPD
Acute Care Hospital outpatient department · Novi, Michigan
Find Dr. Grinberg'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. Issac X. Grinberg is a cardiologist in Novi, Michigan
Dr. Grinberg practices at St John Hospital and Medical Center - Assarian Cancer Center - HOPD in Novi, Michigan.
Dr. Grinberg's NPI, 1790768257, was assigned on November 29, 2005. Dr. Grinberg holds Michigan license 4301050938.
- NPI
- 1790768257NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406849983
- NPI enumeration date
- November 29, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Issac X. Grinberg practices at St John Hospital and Medical Center - Assarian Cancer Center - HOPD in Novi, Michigan
Dr. Grinberg's primary practice is St John Hospital and Medical Center - Assarian Cancer Center - HOPD, at 47601 Grand River Ave, Novi, MI 48374.
- St John Hospital and Medical Center - Assarian Cancer Center - HOPD47601 Grand River Ave, Novi, MI 48374
Source: Dmand AI Affiliation Data
Dr. Issac X. Grinberg is affiliated with 7 sites of care and 2 medical groups
Dr. Grinberg's primary practice is St John Hospital and Medical Center - Assarian Cancer Center - HOPD in Novi, Michigan. Dr. Grinberg is also affiliated with Henry Ford Hospital. The medical group on file is Henry Ford Health Providence Hospital. Dmand AI also links Dr. Grinberg to 2 more hospitals, 2 group practices and clinics, 1 clinical lab and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Issac X. Grinberg's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grinberg practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St John Hospital and Medical Center - Assarian Cancer Center - HOPD | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Issac X. Grinberg is one of 768 cardiologists in Michigan
Cardiovascular disease is Dr. Grinberg's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Grinberg is licensed in Michigan.
Specialties and state licenses
- Cardiovascular disease, MichiganPrimary
Cardiologists near Dr. Grinberg
Counts of cardiologists 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. Issac X. Grinberg billed Medicare for 3,840 services in 2024
CMS data shows 3,840 Medicare services from Dr. Grinberg across 18 procedure codes in 2024, for 2,015 Medicare patients. Medicare paid $130,610 for them.
Dr. Grinberg's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 3,1132024: 3,1481%
- Office and hospital visits
- 2023: 7512024: 66811%
- Other services
- 2023: 02024: 24
Where Dr. Grinberg's Medicare services took place, 2024
- In an office39110%
- In a facility3,44990%
Dr. Grinberg compared with the Michigan median for cardiologists, 2024
- Dr. Grinberg
- Michigan median
- Medicare services
- 3,840vs 1,4352.7 times
- Medicare patients
- 2,015vs 6443.1 times
- Part D claims
- 4,004vs 1,5622.6 times
Medians across 749 cardiologists in Michigan with Dmand AI profiles that report each measure.
Dr. Grinberg'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. Grinberg and other cardiologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Issac X. Grinberg treated 2,015 Medicare patients in 2024, average age 76
CMS counts 2,015 Medicare patients who saw Dr. Grinberg in 2024. The largest group is 65 to 74, with 831 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.78, 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. Grinberg's median patient age at 73, with 50% women.
Dr. Grinberg's Medicare patients by age, 2024
Dr. Grinberg's Medicare patients by sex, 2024
- Women1,11855%
- Men89745%
Chronic conditions among Dr. Grinberg's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Ischemic heart disease50%
- Diabetes41%
- Chronic kidney disease37%
- Heart failure37%
- Atrial fibrillation33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grinberg's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Issac X. Grinberg wrote 4,192 Medicare Part D claims in 2024
In 2024, Dr. Grinberg wrote 4,192 Medicare Part D claims for 724 patients. 88% of them were for generic drugs. CMS names the drug for 4,004 of them, across 40 drugs with 11 or more claims each, at $669,420 in total drug cost. In 2023, CMS named 3,568 claims across 39 drugs.
Dr. Grinberg's Part D claims by kind of drug, 2024
- Generic3,693 claims88%
- Brand-name499 claims12%
Dr. Grinberg's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,5682024: 4,00412%
Drugs named by CMS: 40 in 2024, 39 in 2023.
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
Dr. Issac X. Grinberg scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Grinberg for performance year 2024, reported individually. Dr. Grinberg accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Grinberg's MIPS scores, performance year 2024
- 75of 100Final score
- 88.1of 100Quality
- 0of 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. Issac X. Grinberg received $25,041 in industry payments from 2016 to 2025
CMS Open Payments shows 525 general payments to Dr. Grinberg from 45 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 71% of the total. Medtronic Vascular, Inc. paid the most, $8,365.
General payments to Dr. Grinberg by program year, 2016 to 2025
General payments to Dr. Grinberg by kind, 2016 to 2025
- Food and beverage$17,69071%
- Travel and lodging$7,22829%
- Consulting fees$1130%
- Education$100%
Companies that paid Dr. Grinberg the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Issac X. Grinberg'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) |
| Part D prescribing | Medicare 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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Issac X. Grinberg
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. Issac X. Grinberg's NPI number?
Dr. Issac X. Grinberg's NPI number is 1790768257. It was assigned on November 29, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Issac X. Grinberg?
Dr. Issac X. Grinberg is a cardiologist in Novi, Michigan. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Issac X. Grinberg practice?
Dr. Grinberg practices at 47601 Grand River Ave, Novi, MI 48374. Dr. Grinberg's primary practice is St John Hospital and Medical Center - Assarian Cancer Center - HOPD in Novi, Michigan. Dmand AI also links Dr. Grinberg to 2 hospitals, 2 group practices and clinics, 1 clinical lab and 1 medical group.
What is Dr. Issac X. Grinberg's medical license number?
Dr. Grinberg holds Michigan license 4301050938.
Which hospitals is Dr. Issac X. Grinberg affiliated with?
Dr. Grinberg is affiliated with Henry Ford Hospital. Dmand AI links Dr. Grinberg to 2 more hospitals.
What medical group is Dr. Issac X. Grinberg part of?
Dr. Grinberg is linked to Henry Ford Health Providence Hospital. Dmand AI links Dr. Grinberg to 1 more medical group.
Does Dr. Issac X. Grinberg accept Medicare?
Yes. CMS data shows Dr. Grinberg billed Medicare for 3,840 services in 2024, and Dr. Grinberg accepts Medicare assignment.
What is Dr. Issac X. Grinberg's MIPS score?
Dr. Grinberg's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. Issac X. Grinberg see?
CMS counts 2,015 Medicare patients who saw Dr. Grinberg in 2024, with an average age of 76.
What services does Dr. Issac X. Grinberg bill to Medicare?
In 2024, Dr. Grinberg's most billed Medicare services were heart test or procedure (93306), heart test or procedure (93010) and heart test or procedure (93325).
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What drugs does Dr. Issac X. Grinberg prescribe most?
In 2024 Medicare Part D data, Dr. Grinberg's most prescribed drugs by claims were Metoprolol Succinate, Atorvastatin Calcium and Olmesartan Medoxomil.
Has Dr. Issac X. Grinberg received payments from drug or device companies?
CMS Open Payments shows $25,041 in general payments to Dr. Grinberg from 45 companies from 2016 to 2025. The largest total came from Medtronic Vascular, Inc.
How long has Dr. Issac X. Grinberg been practicing?
Dr. Grinberg graduated from medical school in 1987, 39 years ago.
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