Dr. Michael Grassi, MD
- Medicare services, 2019
- 219
- Part D claims, 2024
- 15
- Industry payments
- $61
- Medical groups
- 4
- State licenses
- 2
- Practice address
- 3300 Oakdale Ave N, Robbinsdale, MN 55422-2926
- Practice phone
- Call (763) 581-6560
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Medical group
Find Dr. Grassi'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. Michael Grassi is an internist in Robbinsdale, Minnesota
Dr. Grassi practices with Mercyhealth Physicians, a medical group.
Dr. Grassi's NPI, 1952340143, was assigned on June 5, 2006. Dr. Grassi holds Minnesota license 62868.
- NPI
- 1952340143NPI Registry (opens in a new tab)
- NPI enumeration date
- June 5, 2006
- NPI status
- Active
- Practice phone
- (763) 581-6560
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Michael Grassi's practice address is in Robbinsdale, Minnesota
Dr. Grassi's practice address in the NPI Registry is 3300 Oakdale Ave N, Robbinsdale, MN 55422-2926. The practice phone is (763) 581-6560.
- NPI Registry address3300 Oakdale Ave N, Robbinsdale, MN 55422-2926Phone(763) 581-6560
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michael Grassi is affiliated with 4 medical groups
Dr. Grassi is part of Mercyhealth Physicians, a medical group in Rockford, Illinois. The medical group on file is Sound Physicians. Dmand AI also links Dr. Grassi to 2 more medical groups, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Michael Grassi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grassi practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercyhealth Physicians | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mercyhealth Physicians and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Michael Grassi is one of 2,322 internists in Minnesota
Internal medicine is Dr. Grassi's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Grassi's licenses on file in 2 states: Minnesota and Illinois.
Specialties and state licenses
- Internal medicine, MinnesotaPrimary
- Illinois license
Internists near Dr. Grassi
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. Michael Grassi billed Medicare for 219 services in 2019
CMS data shows 219 Medicare services from Dr. Grassi across 5 procedure codes in 2019. Medicare paid $15,908 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Grassi's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 4852019: 21955%
Dr. Grassi compared with the Minnesota median for internists, 2019
- Dr. Grassi
- Minnesota median
- Medicare services
- 219vs 33635% below
- Part D claims
- 14vs 14490% below
Medians across 2,238 internists in Minnesota with Dmand AI profiles that report each measure.
Dr. Grassi's most billed Medicare procedure codes, 2019
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. Grassi and other internists in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Grassi's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. Grassi's median patient age at 60, with 56% women.
Dr. Grassi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women56%
- Men43%
Source: Dmand AI Patient Panel Data
Dr. Michael Grassi wrote 15 Medicare Part D claims in 2024
In 2024, Dr. Grassi wrote 15 Medicare Part D claims. Every claim was for a generic drug. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $168 in total drug cost. In 2018, CMS named 66 claims across 4 drugs.
Dr. Grassi's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 662019: 1479%
Drugs named by CMS: 1 in 2019, 4 in 2018.
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
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Dr. Michael Grassi received $61 in industry payments from 2017 to 2019
CMS Open Payments shows 4 general payments to Dr. Grassi from 3 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) paid the most, $25.
General payments to Dr. Grassi by program year, 2017 to 2019
Companies that paid Dr. Grassi the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Michael Grassi'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 | 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 Data |
| 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) |
| 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. Michael Grassi
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. Michael Grassi's NPI number?
Dr. Michael Grassi's NPI number is 1952340143. It was assigned on June 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Grassi?
Dr. Michael Grassi is an internist in Robbinsdale, Minnesota. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michael Grassi practice?
Dr. Grassi practices at 3300 Oakdale Ave N, Robbinsdale, MN 55422-2926. Dr. Grassi's primary practice is Mercyhealth Physicians, a medical group. Dmand AI also links Dr. Grassi to 2 medical groups.
What is Dr. Michael Grassi's office phone number?
The practice phone on file for Dr. Grassi is (763) 581-6560.
What is Dr. Michael Grassi's medical license number?
Dr. Grassi holds Minnesota license 62868, one of the licenses on file in 2 states.
Which states has Dr. Michael Grassi been licensed in?
Dmand AI has state licenses on file for Dr. Grassi in Minnesota and Illinois.
What medical group is Dr. Michael Grassi part of?
Dr. Grassi is part of Mercyhealth Physicians in Rockford, Illinois. Dr. Grassi is also linked to Sound Physicians. Dmand AI links Dr. Grassi to 4 medical groups in all.
Does Dr. Michael Grassi accept Medicare?
Yes. CMS data shows Dr. Grassi billed Medicare for 219 services in 2019.
What services does Dr. Michael Grassi bill to Medicare?
In 2019, Dr. Grassi's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
What drugs does Dr. Michael Grassi prescribe most?
In 2019 Medicare Part D data, Dr. Grassi's most prescribed drugs by claims were Levothyroxine Sodium.
Has Dr. Michael Grassi received payments from drug or device companies?
CMS Open Payments shows $61 in general payments to Dr. Grassi from 3 companies from 2017 to 2019. The largest total came from ZOLL Services LLC (A/K/A ZOLL LifeCor Corp).
How long has Dr. Michael Grassi been practicing?
Dr. Grassi's NPI was assigned in 2006.
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