Dr. Chris M. Gruber, MD
- Medicare services, 2024
- 234
- Medicare patients, 2024
- 220
- Part D claims, 2024
- 222
- MIPS score, 2024
- 87
- Hospital affiliations
- 3
- Practice address
- 1045 West Stephenson Street, Freeport, IL 61032
- Practice phone
- Call (815) 599-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gruber'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. Chris M. Gruber is an emergency medicine physician in Freeport, Illinois
Dr. Gruber practices at Mercyhealth Hospital-Freeport in Freeport, Illinois, part of Mercyhealth.
Dr. Gruber's NPI, 1093753287, was assigned on June 2, 2006. Dr. Gruber graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1988.
- NPI
- 1093753287NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062430994
- NPI enumeration date
- June 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (815) 599-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chris M. Gruber practices at Mercyhealth Hospital-Freeport in Freeport, Illinois
Dr. Gruber's primary practice is Mercyhealth Hospital-Freeport, at 1045 West Stephenson Street, Freeport, IL 61032 in Stephenson County. The practice phone is (815) 599-6000.
- Mercyhealth Hospital-Freeport1045 West Stephenson Street, Freeport, IL 61032 · Stephenson CountyPhone(815) 599-6000
Source: Dmand AI Affiliation Data
Dr. Chris M. Gruber is affiliated with 3 sites of care and 3 medical groups
Dr. Gruber's primary practice is Mercyhealth Hospital-Freeport in Freeport, Illinois, part of Mercyhealth. Dr. Gruber is also affiliated with Saint Joseph Hospital. The medical group on file is Mercyhealth Hospital-Freeport. Dmand AI also links Dr. Gruber to 1 more hospital and 2 medical groups, each named with a free account. Dr. Gruber's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chris M. Gruber's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gruber practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercyhealth Hospital-Freeport | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chris M. Gruber is one of 2,385 emergency medicine physicians in Illinois
Emergency medicine is Dr. Gruber's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Gruber has a license on file in Illinois.
Specialties and state licenses
- Emergency medicine, Illinois
Emergency medicine physicians near Dr. Gruber
Counts of emergency medicine physicians 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. Chris M. Gruber billed Medicare for 234 services in 2024
CMS data shows 234 Medicare services from Dr. Gruber across 4 procedure codes in 2024, for 220 Medicare patients. Medicare paid $26,344 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Gruber's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2462024: 2345%
Dr. Gruber compared with the Illinois median for emergency medicine physicians, 2024
- Dr. Gruber
- Illinois median
- Medicare services
- 234vs 27415% below
- Medicare patients
- 220vs 27319% below
- Part D claims
- 111vs 452.5 times
Medians across 2,281 emergency medicine physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Gruber'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. Gruber and other emergency medicine physicians in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chris M. Gruber treated 220 Medicare patients in 2024, average age 74
CMS counts 220 Medicare patients who saw Dr. Gruber in 2024. The largest group is 65 to 74, with 79 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 34% are also on Medicaid. Their average risk score is 1.86, 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. Gruber's median patient age at 73, with 54% women.
Dr. Gruber's Medicare patients by age, 2024
Dr. Gruber's Medicare patients by sex, 2024
- Women11653%
- Men10447%
Chronic conditions among Dr. Gruber's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Arthritis44%
- Diabetes42%
- Anxiety39%
- Heart failure37%
- Chronic kidney disease36%
- Ischemic heart disease35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gruber'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
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chris M. Gruber wrote 222 Medicare Part D claims in 2024
In 2024, Dr. Gruber wrote 222 Medicare Part D claims for 162 patients. 99% of them were for generic drugs. CMS names the drug for 111 of them, across 4 drugs with 11 or more claims each, at $480 in total drug cost. In 2023, CMS named 98 claims across 4 drugs.
Dr. Gruber's Part D claims by kind of drug, 2024
- Generic219 claims99%
- Brand-name and other3 claims1%
Dr. Gruber'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.
Drug classes CMS tracks in Dr. Gruber's Part D claims, 2024
- Opioids31%69 of 222 claims
- Antibiotics26%58 of 222 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: 982024: 11113%
Drugs named by CMS: 4 in 2024, 4 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. Chris M. Gruber scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Gruber for performance year 2024, reported as part of a group. Dr. Gruber accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Gruber's MIPS scores, performance year 2024
- 87of 100Final score
- 86.2of 100Quality
- 40of 100Improvement Activities
- 77of 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. Chris M. Gruber received $220 in industry payments from 2016 to 2021
CMS Open Payments shows 2 general payments to Dr. Gruber from 2 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $117.
General payments to Dr. Gruber by program year, 2016 to 2021
Companies that paid Dr. Gruber the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chris M. Gruber graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Gruber graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Chris M. Gruber'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)Clinician Public Reporting: Overall MIPS Performance (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. Chris M. Gruber
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. Chris M. Gruber's NPI number?
Dr. Chris M. Gruber's NPI number is 1093753287. It was assigned on June 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Chris M. Gruber?
Dr. Chris M. Gruber is an emergency medicine physician in Freeport, Illinois. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Chris M. Gruber practice?
Dr. Gruber practices at 1045 West Stephenson Street, Freeport, IL 61032. Dr. Gruber's primary practice is Mercyhealth Hospital-Freeport in Freeport, Illinois, part of Mercyhealth. Dmand AI also links Dr. Gruber to 1 hospital and 2 medical groups.
What is Dr. Chris M. Gruber's office phone number?
The practice phone on file for Dr. Gruber is (815) 599-6000.
Which hospitals is Dr. Chris M. Gruber affiliated with?
Dr. Gruber practices at Mercyhealth Hospital-Freeport in Freeport, Illinois. Dr. Gruber is also affiliated with Saint Joseph Hospital. Dmand AI links Dr. Gruber to 1 more hospital.
What medical group is Dr. Chris M. Gruber part of?
Dr. Gruber is linked to Mercyhealth Hospital-Freeport. Dmand AI links Dr. Gruber to 2 more medical groups.
Does Dr. Chris M. Gruber accept Medicare?
Yes. CMS data shows Dr. Gruber billed Medicare for 234 services in 2024, and Dr. Gruber accepts Medicare assignment.
What is Dr. Chris M. Gruber's MIPS score?
Dr. Gruber's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
How many Medicare patients does Dr. Chris M. Gruber see?
CMS counts 220 Medicare patients who saw Dr. Gruber in 2024, with an average age of 74.
What services does Dr. Chris M. Gruber bill to Medicare?
In 2024, Dr. Gruber's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and critical care (99291).
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Where did Dr. Chris M. Gruber go to medical school?
Dr. Gruber graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1988.
What drugs does Dr. Chris M. Gruber prescribe most?
In 2024 Medicare Part D data, Dr. Gruber's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Amoxicillin-Clavulanate Potass and Pantoprazole Sodium.
Has Dr. Chris M. Gruber received payments from drug or device companies?
CMS Open Payments shows $220 in general payments to Dr. Gruber from 2 companies from 2016 to 2021. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Chris M. Gruber been practicing?
Dr. Gruber graduated from medical school in 1988, 38 years ago.
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