Dr. Michael Emanuel Grillis, DO
- Medicare services, 2024
- 413
- Medicare patients, 2024
- 308
- Part D claims, 2024
- 182
- Hospital affiliations
- 3
- Industry payments
- $9,915
- Practice address
- 715 South Taft Avenue, Fremont, OH 43420
- Practice phone
- Call (419) 334-6617
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grillis' professional email, personal email and mobile number
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Dr. Michael Emanuel Grillis is a general surgeon in Fremont, Ohio
Dr. Grillis practices at ProMedica Memorial Hospital in Fremont, Ohio, part of ProMedica Health System.
Dr. Grillis' NPI, 1508974494, was assigned on August 29, 2006. Dr. Grillis graduated from West Virginia School of Osteopathic Medicine in 1977. Dr. Grillis holds Ohio license 34004664.
- NPI
- 1508974494NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123108396
- NPI enumeration date
- August 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (419) 334-6617
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Emanuel Grillis practices at ProMedica Memorial Hospital in Fremont, Ohio
Dr. Grillis' primary practice is ProMedica Memorial Hospital, at 715 South Taft Avenue, Fremont, OH 43420 in Sandusky County. The practice phone is (419) 334-6617.
- ProMedica Memorial Hospital715 South Taft Avenue, Fremont, OH 43420 · Sandusky CountyPhone(419) 334-6617
Source: Dmand AI Affiliation Data
Dr. Michael Emanuel Grillis is affiliated with 5 sites of care and 1 medical group
Dr. Grillis' primary practice is ProMedica Memorial Hospital in Fremont, Ohio, part of ProMedica Health System. Dr. Grillis is also affiliated with ProMedica Toledo Hospital. The medical group on file is ProMedica Physicians. Dmand AI also links Dr. Grillis to 1 more hospital, 1 breast imaging center and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael Emanuel Grillis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grillis practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ProMedica Memorial Hospital | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Emanuel Grillis is one of 1,056 general surgeons in Ohio
Surgery is Dr. Grillis' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Grillis is licensed in Ohio.
Specialties and state licenses
- Surgery, OhioPrimary
General surgeons near Dr. Grillis
Counts of general surgeons 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 Emanuel Grillis billed Medicare for 413 services in 2024
CMS data shows 413 Medicare services from Dr. Grillis across 12 procedure codes in 2024, for 308 Medicare patients. Medicare paid $50,324 for them.
Dr. Grillis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1852024: 22823%
- Office and hospital visits
- 2023: 2222024: 14634%
- Other services
- 2023: 672024: 3942%
Where Dr. Grillis' Medicare services took place, 2024
- In an office10826%
- In a facility30574%
Dr. Grillis compared with the Ohio median for general surgeons, 2024
- Dr. Grillis
- Ohio median
- Medicare services
- 413vs 1682.5 times
- Medicare patients
- 308vs 1272.4 times
- Part D claims
- 139vs 463.0 times
Medians across 1,031 general surgeons in Ohio with Dmand AI profiles that report each measure.
Dr. Grillis' 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. Grillis and other general surgeons in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Emanuel Grillis treated 308 Medicare patients in 2024, average age 72
CMS counts 308 Medicare patients who saw Dr. Grillis in 2024. The largest group is 65 to 74, with 186 patients. 72% of them have high blood pressure, and 71% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Grillis' median patient age at 70, with 49% women.
Dr. Grillis' Medicare patients by age, 2024
Dr. Grillis' Medicare patients by sex, 2024
- Women14146%
- Men16754%
Chronic conditions among Dr. Grillis' Medicare patients, 2024
- High blood pressure72%
- High cholesterol71%
- Arthritis45%
- Diabetes31%
- Anxiety22%
- Mood disorders22%
- Chronic kidney disease21%
- COPD20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grillis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael Emanuel Grillis wrote 182 Medicare Part D claims in 2024
In 2024, Dr. Grillis wrote 182 Medicare Part D claims for 110 patients. 96% of them were for generic drugs. CMS names the drug for 139 of them, across 5 drugs with 11 or more claims each, at $1,166 in total drug cost. In 2023, CMS named 146 claims across 6 drugs.
Dr. Grillis' Part D claims by kind of drug, 2024
- Generic175 claims96%
- Brand-name and other7 claims4%
Dr. Grillis' 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.
Drug classes CMS tracks in Dr. Grillis' Part D claims, 2024
- Opioids15%27 of 182 claims
- Antibiotics13%24 of 182 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1462024: 1395%
Drugs named by CMS: 5 in 2024, 6 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. Michael Emanuel Grillis ranks in the 65th percentile for colonoscopy in Medicare
Dr. Grillis accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 54 procedures of colonoscopy by Dr. Grillis, more than 65% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Grillis ranks in Medicare procedure volume
- Colonoscopy
- 65th percentile54 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 59th percentile39 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Michael Emanuel Grillis received $9,915 in industry payments from 2018 to 2025
CMS Open Payments shows 29 general payments to Dr. Grillis from 4 drug and device companies from 2018 to 2025. Education make up the largest share, 50% of the total. Intuitive Surgical, Inc. paid the most, $9,759.
General payments to Dr. Grillis by program year, 2018 to 2025
General payments to Dr. Grillis by kind, 2018 to 2025
- Education$5,00050%
- Travel and lodging$4,13042%
- Food and beverage$6817%
- Gifts$1041%
Companies that paid Dr. Grillis the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Emanuel Grillis graduated from West Virginia School of Osteopathic Medicine
Dr. Grillis graduated from West Virginia School of Osteopathic Medicine in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Emanuel Grillis'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) |
| 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Michael Emanuel Grillis
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 Emanuel Grillis' NPI number?
Dr. Michael Emanuel Grillis' NPI number is 1508974494. It was assigned on August 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Emanuel Grillis?
Dr. Michael Emanuel Grillis is a general surgeon in Fremont, Ohio. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Michael Emanuel Grillis practice?
Dr. Grillis practices at 715 South Taft Avenue, Fremont, OH 43420. Dr. Grillis' primary practice is ProMedica Memorial Hospital in Fremont, Ohio, part of ProMedica Health System. Dmand AI also links Dr. Grillis to 1 hospital, 1 breast imaging center and 1 group practice or clinic.
What is Dr. Michael Emanuel Grillis' office phone number?
The practice phone on file for Dr. Grillis is (419) 334-6617.
What is Dr. Michael Emanuel Grillis' medical license number?
Dr. Grillis holds Ohio license 34004664.
Which hospitals is Dr. Michael Emanuel Grillis affiliated with?
Dr. Grillis practices at ProMedica Memorial Hospital in Fremont, Ohio. Dr. Grillis is also affiliated with ProMedica Toledo Hospital. Dmand AI links Dr. Grillis to 1 more hospital.
What medical group is Dr. Michael Emanuel Grillis part of?
Dr. Grillis is linked to ProMedica Physicians.
Does Dr. Michael Emanuel Grillis accept Medicare?
Yes. CMS data shows Dr. Grillis billed Medicare for 413 services in 2024, and Dr. Grillis accepts Medicare assignment.
How many Medicare patients does Dr. Michael Emanuel Grillis see?
CMS counts 308 Medicare patients who saw Dr. Grillis in 2024, with an average age of 72.
What services does Dr. Michael Emanuel Grillis bill to Medicare?
In 2024, Dr. Grillis' most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (43239) and office visit, new patient (99204).
Show 4 more questionsShow fewer questions
Where did Dr. Michael Emanuel Grillis go to medical school?
Dr. Grillis graduated from West Virginia School of Osteopathic Medicine in 1977.
What drugs does Dr. Michael Emanuel Grillis prescribe most?
In 2024 Medicare Part D data, Dr. Grillis' most prescribed drugs by claims were Omeprazole, Oxycodone-Acetaminophen and Pantoprazole Sodium.
Has Dr. Michael Emanuel Grillis received payments from drug or device companies?
CMS Open Payments shows $9,915 in general payments to Dr. Grillis from 4 companies from 2018 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Michael Emanuel Grillis been practicing?
Dr. Grillis graduated from medical school in 1977, 49 years ago.
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