Bariatric SurgeryBody Mass IndexGlucagon-Like Peptide-1 Receptor Agonists
Dr. Mark M. Tomera, MD
NPI1043311665PAC ID0244246650
- Medicare services, 2021
- 12
- Medicare patients, 2024
- 19
- Part D claims, 2024
- 48
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 3 Erie Ct, Oak Park, IL 60302
- Practice phone
- Call (615) 665-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
West Suburban Medical Center (CLOSED)
Oak Park, Illinois
Find Dr. Tomera'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. Mark M. Tomera is a general surgeon in Oak Park, Illinois
Dr. Tomera practices at West Suburban Medical Center (CLOSED) in Oak Park, Illinois.
Dr. Tomera's NPI, 1043311665, was assigned on September 26, 2006. Dr. Tomera graduated from Loyola University of Chicago, Stritch School of Medicine in 1979. Dr. Tomera holds Illinois license 036065652.
NPI and contact details
- NPI
- 1043311665NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244246650
- NPI enumeration date
- September 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (615) 665-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark M. Tomera practices at West Suburban Medical Center (CLOSED) in Oak Park, Illinois
Dr. Tomera's primary practice is West Suburban Medical Center (CLOSED), at 3 Erie Ct, Oak Park, IL 60302 in Cook County. The practice phone is (615) 665-6000.
- West Suburban Medical Center (CLOSED)3 Erie Ct, Oak Park, IL 60302 · Cook CountyPhone(615) 665-6000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark M. Tomera is affiliated with 4 sites of care
Dr. Tomera's primary practice is West Suburban Medical Center (CLOSED) in Oak Park, Illinois. Dr. Tomera is also affiliated with West Suburban Medical Center. Dmand AI also links Dr. Tomera to 1 more hospital and 1 physician office, each named with a free account.
West Suburban Medical Center (CLOSED)Primary
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. Mark M. Tomera's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tomera practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| West Suburban Medical Center (CLOSED) | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Tomera practices
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. Mark M. Tomera is one of 1,217 general surgeons in Illinois
Surgery is Dr. Tomera's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Tomera is licensed in Illinois.
Specialties and state licenses
- Surgery, IllinoisPrimary
General surgeons near Dr. Tomera
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. Mark M. Tomera billed Medicare for 12 services in 2021
CMS data shows 12 Medicare services from Dr. Tomera across 1 procedure code in 2021, for 19 Medicare patients. Medicare paid $1,052 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202112
Medicare patients19
Paid by Medicare$1,052
Procedure codes1
Dr. Tomera's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 202021: 1240%
- Surgery
- 2020: 162021: 0100%
Dr. Tomera compared with the Illinois median for general surgeons, 2021
- Dr. Tomera
- Illinois median
- Medicare services
- 12vs 19494% below
- Medicare patients
- 19vs 14487% below
- Part D claims
- 13vs 2854% below
Medians across 1,031 general surgeons in Illinois with Dmand AI profiles that report each measure.
Dr. Tomera's most billed Medicare procedure codes, 2021
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. Tomera?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tomera and other general surgeons in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark M. Tomera treated 19 Medicare patients in 2024, average age 73
CMS counts 19 Medicare patients who saw Dr. Tomera in 2024. 75% of them have high blood pressure, and 63% have copd. Their average risk score is 5.05, 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. Tomera's median patient age at 61, with 40% women.
Medicare patients, 202419
Average age73
Average risk score5.05
Chronic conditions among Dr. Tomera's Medicare patients, 2024
- High blood pressure75%
- COPD63%
- High cholesterol63%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tomera's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women40%
- Men60%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark M. Tomera wrote 48 Medicare Part D claims in 2024
In 2024, Dr. Tomera wrote 48 Medicare Part D claims. 79% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $186 in total drug cost. In 2021, CMS named 14 claims across 1 drug.
Part D claims, 202448
Drugs named by CMS1
Total drug cost$186
Dr. Tomera's Part D claims by kind of drug, 2024
- Generic38 claims79%
- Brand-name and other10 claims21%
Dr. Tomera'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.
Part D claims for drugs CMS names, 2021 to 2024
- 2021
- 2024
- Claims for drugs CMS names
- 2021: 142024: 137%
Drugs named by CMS: 1 in 2024, 1 in 2021.
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. Mark M. Tomera ranks in the 63rd percentile for removal of tissue in Medicare
Dr. Tomera accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 12 procedures of removal of tissue by Dr. Tomera, more than 63% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Tomera ranks in Medicare procedure volume
- Removal of tissue
- 63rd percentile12 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)
Upper gastrointestinal (GI) endoscopy for acid reflux: 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
Find general surgeons like Dr. Tomera by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Mark M. Tomera has 1 publication on record
Dmand AI links 1 paper to Dr. Tomera in 2024.
Papers1
Recent publications by Dr. Tomera
See who Dr. Tomera researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tomera works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark M. Tomera received $20 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Tomera from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. EUSA Pharma (US) LLC paid the most, $20.
Companies that paid Dr. Tomera the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark M. Tomera graduated from Loyola University of Chicago, Stritch School of Medicine
Dr. Tomera graduated from Loyola University of Chicago, Stritch School of Medicine in 1979.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark M. Tomera'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Mark M. Tomera
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. Mark M. Tomera's NPI number?
Dr. Mark M. Tomera's NPI number is 1043311665. It was assigned on September 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark M. Tomera?
Dr. Mark M. Tomera is a general surgeon in Oak Park, Illinois. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Mark M. Tomera practice?
Dr. Tomera practices at 3 Erie Ct, Oak Park, IL 60302. Dr. Tomera's primary practice is West Suburban Medical Center (CLOSED) in Oak Park, Illinois. Dmand AI also links Dr. Tomera to 1 hospital and 1 physician office.
What is Dr. Mark M. Tomera's office phone number?
The practice phone on file for Dr. Tomera is (615) 665-6000.
What is Dr. Mark M. Tomera's medical license number?
Dr. Tomera holds Illinois license 036065652.
Which hospitals is Dr. Mark M. Tomera affiliated with?
Dr. Tomera is affiliated with West Suburban Medical Center. Dmand AI links Dr. Tomera to 1 more hospital.
Does Dr. Mark M. Tomera accept Medicare?
Yes. CMS data shows Dr. Tomera billed Medicare for 12 services in 2021, and Dr. Tomera accepts Medicare assignment.
How many Medicare patients does Dr. Mark M. Tomera see?
CMS counts 19 Medicare patients who saw Dr. Tomera in 2024, with an average age of 73.
What services does Dr. Mark M. Tomera bill to Medicare?
In 2021, Dr. Tomera's most billed Medicare services were hospital inpatient care (99233).
Where did Dr. Mark M. Tomera go to medical school?
Dr. Tomera graduated from Loyola University of Chicago, Stritch School of Medicine in 1979.
Show 4 more questionsShow fewer questions
What drugs does Dr. Mark M. Tomera prescribe most?
In 2024 Medicare Part D data, Dr. Tomera's most prescribed drugs by claims were Metoprolol Succinate.
Has Dr. Mark M. Tomera received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to Dr. Tomera from 1 company from 2019 to 2019. The largest total came from EUSA Pharma (US) LLC.
How long has Dr. Mark M. Tomera been practicing?
Dr. Tomera graduated from medical school in 1979, 47 years ago.
Does Dr. Mark M. Tomera do research?
Dmand AI links 1 publication to Dr. Tomera.
Selling to surgery practices?
See general surgeons in Illinois 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