Dr. Gary R. Katz, DO
- Medicare services, 2024
- 186
- Medicare patients, 2024
- 153
- Part D claims, 2024
- 283
- Hospital affiliations
- 4
- Industry payments
- $5,127
- Practice address
- 11800 12 Mile Rd, Warren, MI 48093
- Practice phone
- Call (248) 851-1430
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Michigan Healthcare Professionals
Warren, Michigan
Find Dr. Katz'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. Gary R. Katz is a general surgeon in Warren, Michigan
Dr. Katz practices at Michigan Healthcare Professionals in Warren, Michigan.
Dr. Katz's NPI, 1255329355, was assigned on October 12, 2005. Dr. Katz graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1991. Dr. Katz holds Michigan license 5101011790.
- NPI
- 1255329355NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244121036
- NPI enumeration date
- October 12, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (248) 851-1430
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gary R. Katz practices at Michigan Healthcare Professionals in Warren, Michigan
Dr. Katz's primary practice is Michigan Healthcare Professionals, at 11800 12 Mile Rd, Warren, MI 48093 in Macomb County. The practice phone is (248) 851-1430.
- Michigan Healthcare Professionals11800 12 Mile Rd, Warren, MI 48093 · Macomb CountyPhone(248) 851-1430
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gary R. Katz is affiliated with 9 sites of care and 5 medical groups
Dr. Katz's primary practice is Michigan Healthcare Professionals in Warren, Michigan. Dr. Katz is also affiliated with Henry Ford Warren Hospital. The medical group on file is Michigan Healthcare Professionals, P.C. Dmand AI also links Dr. Katz to 3 more hospitals, 4 group practices and clinics and 4 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gary R. Katz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Katz practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Michigan Healthcare Professionals | Available with a free account |
| +8 more sites and 4 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gary R. Katz is one of 1,095 general surgeons in Michigan
Surgery is Dr. Katz's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Katz is licensed in Michigan.
Specialties and state licenses
- Surgery, MichiganPrimary
General surgeons near Dr. Katz
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. Gary R. Katz billed Medicare for 186 services in 2024
CMS data shows 186 Medicare services from Dr. Katz across 6 procedure codes in 2024, for 153 Medicare patients. Medicare paid $15,389 for them.
Dr. Katz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2362024: 16829%
- Surgery
- 2023: 272024: 1833%
Where Dr. Katz's Medicare services took place, 2024
- In an office5630%
- In a facility13070%
Dr. Katz compared with the Michigan median for general surgeons, 2024
- Dr. Katz
- Michigan median
- Medicare services
- 186vs 12648% above
- Medicare patients
- 153vs 10743% above
- Part D claims
- 234vs 307.8 times
Medians across 1,046 general surgeons in Michigan with Dmand AI profiles that report each measure.
Dr. Katz'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.
Need commercial claims for Dr. Katz?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Katz and other general surgeons in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gary R. Katz treated 153 Medicare patients in 2024, average age 68
CMS counts 153 Medicare patients who saw Dr. Katz in 2024. The largest group is 65 to 74, with 54 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 52% are also on Medicaid. Their average risk score is 2.52, 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. Katz's median patient age at 57, with 68% women.
Dr. Katz's Medicare patients by age, 2024
Dr. Katz's Medicare patients by sex, 2024
- Women10065%
- Men5335%
Chronic conditions among Dr. Katz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis61%
- Diabetes52%
- Heart failure41%
- Anxiety39%
- Chronic kidney disease39%
- Ischemic heart disease37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Katz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women68%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gary R. Katz wrote 283 Medicare Part D claims in 2024
In 2024, Dr. Katz wrote 283 Medicare Part D claims for 75 patients. 95% of them were for generic drugs. CMS names the drug for 234 of them, across 7 drugs with 11 or more claims each, at $4,688 in total drug cost. In 2023, CMS named 206 claims across 7 drugs.
Dr. Katz's Part D claims by kind of drug, 2024
- Generic270 claims95%
- Brand-name13 claims5%
Dr. Katz'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. Katz's Part D claims, 2024
- Antibiotics5%15 of 283 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: 2062024: 23414%
Drugs named by CMS: 7 in 2024, 7 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. Gary R. Katz ranks in the 57th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Katz accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 34 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Katz, more than 57% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Katz ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 57th percentile34 procedures
- Colonoscopy
- 41st percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Spinal fusion: 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Gary R. Katz received $5,127 in industry payments from 2016 to 2025
CMS Open Payments shows 42 general payments to Dr. Katz from 19 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 67% of the total. Centinel Spine, LLC paid the most, $1,410.
General payments to Dr. Katz by program year, 2016 to 2025
General payments to Dr. Katz by kind, 2016 to 2025
- Travel and lodging$3,41567%
- Food and beverage$1,69233%
- Education$200%
Companies that paid Dr. Katz 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. Gary R. Katz graduated from Des Moines University of Osteopathic Medicine and Health Sciences
Dr. Katz graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gary R. Katz'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 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. Gary R. Katz
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. Gary R. Katz's NPI number?
Dr. Gary R. Katz's NPI number is 1255329355. It was assigned on October 12, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary R. Katz?
Dr. Gary R. Katz is a general surgeon in Warren, Michigan. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Gary R. Katz practice?
Dr. Katz practices at 11800 12 Mile Rd, Warren, MI 48093. Dr. Katz's primary practice is Michigan Healthcare Professionals in Warren, Michigan. Dmand AI also links Dr. Katz to 3 hospitals, 4 group practices and clinics and 4 medical groups.
What is Dr. Gary R. Katz's office phone number?
The practice phone on file for Dr. Katz is (248) 851-1430.
What is Dr. Gary R. Katz's medical license number?
Dr. Katz holds Michigan license 5101011790.
Which hospitals is Dr. Gary R. Katz affiliated with?
Dr. Katz is affiliated with Henry Ford Warren Hospital. Dmand AI links Dr. Katz to 3 more hospitals.
What medical group is Dr. Gary R. Katz part of?
Dr. Katz is linked to Michigan Healthcare Professionals, P.C. Dmand AI links Dr. Katz to 4 more medical groups.
Does Dr. Gary R. Katz accept Medicare?
Yes. CMS data shows Dr. Katz billed Medicare for 186 services in 2024, and Dr. Katz accepts Medicare assignment.
How many Medicare patients does Dr. Gary R. Katz see?
CMS counts 153 Medicare patients who saw Dr. Katz in 2024, with an average age of 68.
What services does Dr. Gary R. Katz bill to Medicare?
In 2024, Dr. Katz's most billed Medicare services were office visit, established patient (99213), hospital inpatient care (99223) and hospital inpatient care (99232).
Show 4 more questionsShow fewer questions
Where did Dr. Gary R. Katz go to medical school?
Dr. Katz graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1991.
What drugs does Dr. Gary R. Katz prescribe most?
In 2024 Medicare Part D data, Dr. Katz's most prescribed drugs by claims were Omeprazole, Nystatin and Nystop.
Has Dr. Gary R. Katz received payments from drug or device companies?
CMS Open Payments shows $5,127 in general payments to Dr. Katz from 19 companies from 2016 to 2025. The largest total came from Centinel Spine, LLC.
How long has Dr. Gary R. Katz been practicing?
Dr. Katz graduated from medical school in 1991, 35 years ago.
Selling to surgery practices?
See general surgeons in Michigan by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card