Dr. Keith Michael Rezin, MD
- Medicare services, 2024
- 2,699
- Medicare patients, 2024
- 442
- Part D claims, 2024
- 110
- Hospital affiliations
- 1
- Industry payments
- $1,625
- Practice address
- 1051 W Us-6, Morris, IL 60450
- Practice phone
- Call (815) 318-5666
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Deerpath Orthopedic Surgical Center, LLC
Morris, Illinois
Find Dr. Rezin's professional email, personal email and mobile number
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Dr. Keith Michael Rezin is an orthopedic surgeon in Morris, Illinois
Dr. Rezin practices at Deerpath Orthopedic Surgical Center, LLC in Morris, Illinois.
Dr. Rezin's NPI, 1407867393, was assigned on August 10, 2006. Dr. Rezin graduated from Rush Medical College of Rush University in 1986. Dr. Rezin holds Illinois license 036076751.
- NPI
- 1407867393NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204824485
- NPI enumeration date
- August 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (815) 318-5666
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Keith Michael Rezin practices at Deerpath Orthopedic Surgical Center, LLC in Morris, Illinois
Dr. Rezin's primary practice is Deerpath Orthopedic Surgical Center, LLC, at 1051 W Us-6, Morris, IL 60450 in Grundy County. The practice phone is (815) 318-5666.
- Deerpath Orthopedic Surgical Center, LLC1051 W Us-6, Morris, IL 60450 · Grundy CountyPhone(815) 318-5666
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Keith Michael Rezin is affiliated with 4 sites of care and 2 medical groups
Dr. Rezin's primary practice is Deerpath Orthopedic Surgical Center, LLC in Morris, Illinois. Dr. Rezin is also affiliated with Morris Hospital & Healthcare Centers. The medical group on file is Morris Hospital & Healthcare Centers. Dmand AI also links Dr. Rezin to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Keith Michael Rezin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rezin practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Deerpath Orthopedic Surgical Center, LLC | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Keith Michael Rezin is one of 849 orthopedic surgeons in Illinois
Orthopaedic surgery is Dr. Rezin's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Rezin is licensed in Illinois.
Specialties and state licenses
- Orthopaedic surgery, IllinoisPrimary
Orthopedic surgeons near Dr. Rezin
Counts of orthopedic 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. Keith Michael Rezin billed Medicare for 2,699 services in 2024
CMS data shows 2,699 Medicare services from Dr. Rezin across 18 procedure codes in 2024, for 442 Medicare patients. Medicare paid $133,018 for them.
Dr. Rezin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 8092024: 1,38171%
- Office and hospital visits
- 2023: 4172024: 50220%
- Surgery
- 2023: 3462024: 42222%
- Imaging
- 2023: 3092024: 39428%
Where Dr. Rezin's Medicare services took place, 2024
- In an office2,61797%
- In a facility823%
Dr. Rezin compared with the Illinois median for orthopedic surgeons, 2024
- Dr. Rezin
- Illinois median
- Medicare services
- 2,699vs 1,2502.2 times
- Medicare patients
- 442vs 29649% above
- Part D claims
- 84vs 12030% below
Medians across 741 orthopedic surgeons in Illinois with Dmand AI profiles that report each measure.
Dr. Rezin'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. Rezin and other orthopedic surgeons in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Keith Michael Rezin treated 442 Medicare patients in 2024, average age 74
CMS counts 442 Medicare patients who saw Dr. Rezin in 2024. The largest group is 65 to 74, with 205 patients. 75% of them have arthritis, and 75% have high blood pressure. 12% are also on Medicaid. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Rezin's median patient age at 70, with 53% women.
Dr. Rezin's Medicare patients by age, 2024
Dr. Rezin's Medicare patients by sex, 2024
- Women26560%
- Men17740%
Chronic conditions among Dr. Rezin's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease32%
- Diabetes29%
- Anxiety25%
- Chronic kidney disease21%
- COPD19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rezin's 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
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Keith Michael Rezin wrote 110 Medicare Part D claims in 2024
In 2024, Dr. Rezin wrote 110 Medicare Part D claims for 74 patients. 99% of them were for generic drugs. CMS names the drug for 84 of them, across 3 drugs with 11 or more claims each, at $268 in total drug cost. In 2023, CMS named 194 claims across 6 drugs.
Dr. Rezin's Part D claims by kind of drug, 2024
- Generic109 claims99%
- Brand-name and other1 claims1%
Dr. Rezin'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. Rezin's Part D claims, 2024
- Opioids36%40 of 110 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: 1942024: 8457%
Drugs named by CMS: 3 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. Keith Michael Rezin ranks in the 73rd percentile for knee replacement in Medicare
Dr. Rezin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 40 procedures of knee replacement by Dr. Rezin, more than 73% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Rezin ranks in Medicare procedure volume
- Knee replacement
- 73rd percentile40 procedures
- Hip replacement
- 62nd percentile17 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Lower limb (leg) arthroscopy (minimally invasive joint repair): 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. Keith Michael Rezin received $1,625 in industry payments from 2016 to 2025
CMS Open Payments shows 73 general payments to Dr. Rezin from 27 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Flexion Therapeutics, Inc. paid the most, $241.
General payments to Dr. Rezin by program year, 2016 to 2025
Companies that paid Dr. Rezin the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Keith Michael Rezin graduated from Rush Medical College of Rush University
Dr. Rezin graduated from Rush Medical College of Rush University in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Keith Michael Rezin'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 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. Keith Michael Rezin
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. Keith Michael Rezin's NPI number?
Dr. Keith Michael Rezin's NPI number is 1407867393. It was assigned on August 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Keith Michael Rezin?
Dr. Keith Michael Rezin is an orthopedic surgeon in Morris, Illinois. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Keith Michael Rezin practice?
Dr. Rezin practices at 1051 W Us-6, Morris, IL 60450. Dr. Rezin's primary practice is Deerpath Orthopedic Surgical Center, LLC in Morris, Illinois. Dmand AI also links Dr. Rezin to 2 group practices and clinics and 1 medical group.
What is Dr. Keith Michael Rezin's office phone number?
The practice phone on file for Dr. Rezin is (815) 318-5666.
What is Dr. Keith Michael Rezin's medical license number?
Dr. Rezin holds Illinois license 036076751.
Which hospitals is Dr. Keith Michael Rezin affiliated with?
Dr. Rezin is affiliated with Morris Hospital & Healthcare Centers.
What medical group is Dr. Keith Michael Rezin part of?
Dr. Rezin is linked to Morris Hospital & Healthcare Centers. Dmand AI links Dr. Rezin to 1 more medical group.
Does Dr. Keith Michael Rezin accept Medicare?
Yes. CMS data shows Dr. Rezin billed Medicare for 2,699 services in 2024, and Dr. Rezin accepts Medicare assignment.
How many Medicare patients does Dr. Keith Michael Rezin see?
CMS counts 442 Medicare patients who saw Dr. Rezin in 2024, with an average age of 74.
What services does Dr. Keith Michael Rezin bill to Medicare?
In 2024, Dr. Rezin's most billed Medicare services were injected or infused drug (J3301), surgery: bones and joints (20610) and office visit, established patient (99213).
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Where did Dr. Keith Michael Rezin go to medical school?
Dr. Rezin graduated from Rush Medical College of Rush University in 1986.
What drugs does Dr. Keith Michael Rezin prescribe most?
In 2024 Medicare Part D data, Dr. Rezin's most prescribed drugs by claims were Meloxicam, Tramadol HCl and Hydrocodone-Acetaminophen.
Has Dr. Keith Michael Rezin received payments from drug or device companies?
CMS Open Payments shows $1,625 in general payments to Dr. Rezin from 27 companies from 2016 to 2025. The largest total came from Flexion Therapeutics, Inc.
How long has Dr. Keith Michael Rezin been practicing?
Dr. Rezin graduated from medical school in 1986, 40 years ago.
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