Dr. Paul J. Gruszka, MD
- Medicare services, 2024
- 17,778
- Medicare patients, 2024
- 423
- Part D claims, 2024
- 358
- MIPS score, 2024
- 82
- Hospital affiliations
- 2
- Practice address
- 601 Gateway Blvd, Chesterton, IN 46304
- Practice phone
- Call (219) 921-1444
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lakeshore Bone & Joint Institute
Chesterton, Indiana
Find Dr. Gruszka'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. Paul J. Gruszka is an orthopedic surgeon in Chesterton, Indiana
Dr. Gruszka practices at Lakeshore Bone & Joint Institute in Chesterton, Indiana.
Dr. Gruszka's NPI, 1295733889, was assigned on July 8, 2005. Dr. Gruszka graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1986. Dr. Gruszka holds Indiana license 01039250A.
- NPI
- 1295733889NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092792440
- NPI enumeration date
- July 8, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (219) 921-1444
- 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. Paul J. Gruszka practices at Lakeshore Bone & Joint Institute in Chesterton, Indiana
Dr. Gruszka's primary practice is Lakeshore Bone & Joint Institute, at 601 Gateway Blvd, Chesterton, IN 46304 in Porter County. The practice phone is (219) 921-1444.
- Lakeshore Bone & Joint Institute601 Gateway Blvd, Chesterton, IN 46304 · Porter CountyPhone(219) 921-1444
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Paul J. Gruszka is affiliated with 5 sites of care and 2 medical groups
Dr. Gruszka's primary practice is Lakeshore Bone & Joint Institute in Chesterton, Indiana. Dr. Gruszka is also affiliated with Northwest Health - Porter. The medical group on file is Lakeshore Bone & Joint Institute. Dmand AI also links Dr. Gruszka to 1 more hospital, 2 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. Paul J. Gruszka's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gruszka practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lakeshore Bone & Joint Institute | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Paul J. Gruszka is one of 429 orthopedic surgeons in Indiana
Orthopaedic surgery is Dr. Gruszka's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Gruszka is licensed in Indiana.
Specialties and state licenses
- Orthopaedic surgery, IndianaPrimary
Orthopedic surgeons near Dr. Gruszka
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. Paul J. Gruszka billed Medicare for 17,778 services in 2024
CMS data shows 17,778 Medicare services from Dr. Gruszka across 16 procedure codes in 2024, for 423 Medicare patients. Medicare paid $193,601 for them.
Dr. Gruszka's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 9332024: 15,5611568%
- Office and hospital visits
- 2023: 8582024: 8372%
- Imaging
- 2023: 6402024: 71011%
- Surgery
- 2023: 6392024: 6705%
Where Dr. Gruszka's Medicare services took place, 2024
- In an office17,729100%
- In a facility490%
Dr. Gruszka compared with the Indiana median for orthopedic surgeons, 2024
- Dr. Gruszka
- Indiana median
- Medicare services
- 17,778vs 1,34213.2 times
- Medicare patients
- 423vs 26261% above
- Part D claims
- 309vs 16686% above
Medians across 423 orthopedic surgeons in Indiana with Dmand AI profiles that report each measure.
Dr. Gruszka'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. Gruszka and other orthopedic surgeons in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Paul J. Gruszka treated 423 Medicare patients in 2024, average age 75
CMS counts 423 Medicare patients who saw Dr. Gruszka in 2024. The largest group is 65 to 74, with 179 patients. 75% of them have arthritis, and 75% have high blood pressure. 9% are also on Medicaid. Their average risk score is 1.22, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gruszka's median patient age at 67, with 55% women.
Dr. Gruszka's Medicare patients by age, 2024
Dr. Gruszka's Medicare patients by sex, 2024
- Women26863%
- Men15537%
Chronic conditions among Dr. Gruszka's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease30%
- Diabetes28%
- Mood disorders28%
- Anxiety26%
- Chronic kidney disease26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gruszka's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women55%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Paul J. Gruszka wrote 358 Medicare Part D claims in 2024
In 2024, Dr. Gruszka wrote 358 Medicare Part D claims for 142 patients. 99% of them were for generic drugs. CMS names the drug for 309 of them, across 6 drugs with 11 or more claims each, at $2,528 in total drug cost. In 2023, CMS named 243 claims across 6 drugs.
Dr. Gruszka's Part D claims by kind of drug, 2024
- Generic355 claims99%
- Brand-name and other3 claims1%
Dr. Gruszka'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. Gruszka's Part D claims, 2024
- Opioids46%165 of 358 claims
- Antibiotics9%32 of 358 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: 2432024: 30927%
Drugs named by CMS: 6 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. Paul J. Gruszka scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Gruszka for performance year 2024, reported as part of a group. Dr. Gruszka accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Gruszka's MIPS scores, performance year 2024
- 82of 100Final score
- 81of 100Quality
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Knee replacement: 1 to 10 procedures (CMS shows small counts as a range)
Lower limb (leg) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
Upper limb (arm) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Paul J. Gruszka received $2,532 in industry payments from 2016 to 2025
CMS Open Payments shows 74 general payments to Dr. Gruszka from 15 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 41% of the total. Sanofi and Genzyme US Companies paid the most, $980.
General payments to Dr. Gruszka by program year, 2016 to 2025
General payments to Dr. Gruszka by kind, 2016 to 2025
- Food and beverage$1,03041%
- Speaker and faculty fees$98039%
- Education$52121%
Companies that paid Dr. Gruszka 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. Paul J. Gruszka graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Gruszka graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Paul J. Gruszka'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)Clinician Public Reporting: Overall MIPS Performance (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. Paul J. Gruszka
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. Paul J. Gruszka's NPI number?
Dr. Paul J. Gruszka's NPI number is 1295733889. It was assigned on July 8, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Paul J. Gruszka?
Dr. Paul J. Gruszka is an orthopedic surgeon in Chesterton, Indiana. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Paul J. Gruszka practice?
Dr. Gruszka practices at 601 Gateway Blvd, Chesterton, IN 46304. Dr. Gruszka's primary practice is Lakeshore Bone & Joint Institute in Chesterton, Indiana. Dmand AI also links Dr. Gruszka to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Paul J. Gruszka's office phone number?
The practice phone on file for Dr. Gruszka is (219) 921-1444.
What is Dr. Paul J. Gruszka's medical license number?
Dr. Gruszka holds Indiana license 01039250A.
Which hospitals is Dr. Paul J. Gruszka affiliated with?
Dr. Gruszka is affiliated with Northwest Health - Porter. Dmand AI links Dr. Gruszka to 1 more hospital.
What medical group is Dr. Paul J. Gruszka part of?
Dr. Gruszka is linked to Lakeshore Bone & Joint Institute. Dmand AI links Dr. Gruszka to 1 more medical group.
Does Dr. Paul J. Gruszka accept Medicare?
Yes. CMS data shows Dr. Gruszka billed Medicare for 17,778 services in 2024, and Dr. Gruszka accepts Medicare assignment.
What is Dr. Paul J. Gruszka's MIPS score?
Dr. Gruszka's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
How many Medicare patients does Dr. Paul J. Gruszka see?
CMS counts 423 Medicare patients who saw Dr. Gruszka in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Paul J. Gruszka bill to Medicare?
In 2024, Dr. Gruszka's most billed Medicare services were injected or infused drug (J1010), office visit, established patient (99214) and surgery: bones and joints (20611).
Where did Dr. Paul J. Gruszka go to medical school?
Dr. Gruszka graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1986.
What drugs does Dr. Paul J. Gruszka prescribe most?
In 2024 Medicare Part D data, Dr. Gruszka's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Meloxicam and Tramadol HCl.
Has Dr. Paul J. Gruszka received payments from drug or device companies?
CMS Open Payments shows $2,532 in general payments to Dr. Gruszka from 15 companies from 2016 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Paul J. Gruszka been practicing?
Dr. Gruszka graduated from medical school in 1986, 40 years ago.
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