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Dr. Marc Allan Adajar, MD
NPI1508947383
- Medicare services, 2024
- 18
- Medicare patients, 2024
- 24
- Part D claims, 2020
- 21
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 3100 Superior Ave, Sheboygan, WI 53081
- Practice phone
- Call (920) 459-8300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Adajar'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. Marc Allan Adajar is a general surgeon in Sheboygan, Wisconsin
Dr. Adajar practices at HSHS St. Nicholas Hospital in Sheboygan, Wisconsin, part of Hospital Sisters of St. Francis.
Dr. Adajar's NPI, 1508947383, was assigned on October 18, 2006. Dr. Adajar graduated from University of Santo Tomas in 2000. Dr. Adajar holds Illinois license 36114923.
NPI and contact details
- NPI
- 1508947383NPI Registry (opens in a new tab)
- NPI enumeration date
- October 18, 2006
- NPI status
- Active
- Practice phone
- (920) 459-8300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Marc Allan Adajar practices at HSHS St. Nicholas Hospital in Sheboygan, Wisconsin
Dr. Adajar's primary practice is HSHS St. Nicholas Hospital, at 3100 Superior Ave, Sheboygan, WI 53081 in Sheboygan County. The practice phone is (920) 459-8300.
- HSHS St. Nicholas Hospital3100 Superior Ave, Sheboygan, WI 53081 · Sheboygan CountyPhone(920) 459-8300
Source: Dmand AI Affiliation Data
Dr. Marc Allan Adajar is affiliated with 3 sites of care and 3 medical groups
Dr. Adajar's primary practice is HSHS St. Nicholas Hospital in Sheboygan, Wisconsin, part of Hospital Sisters of St. Francis. The medical group on file is Dreyer Medical Clinic (Advocate Medical Group). Dmand AI also links Dr. Adajar to 2 more group practices and clinics and 2 medical groups, each named with a free account.
Dreyer Medical Clinic (Advocate Medical Group)2 group practices and clinicsNames with a free account2 medical groupsNames with a free account
See all 6 affiliations for Dr. AdajarSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marc Allan Adajar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Adajar practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HSHS St. Nicholas Hospital | 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. Marc Allan Adajar is one of 565 general surgeons in Wisconsin
Surgery is Dr. Adajar's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Adajar is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Adajar's licenses on file in 2 states: Illinois and Indiana.
Specialties and state licenses
- Surgery, IllinoisPrimary
- Indiana license
General surgeons near Dr. Adajar
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
565general surgeons in Wisconsin
9general surgeons in Sheboygan
4general surgeons at HSHS St. Nicholas HospitalSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Marc Allan Adajar billed Medicare for 18 services in 2024
CMS data shows 18 Medicare services from Dr. Adajar across 1 procedure code in 2024, for 24 Medicare patients. Medicare paid $859 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202418
Medicare patients24
Paid by Medicare$859
Procedure codes1
Dr. Adajar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 472024: 1862%
Dr. Adajar compared with the Wisconsin median for general surgeons, 2024
- Dr. Adajar
- Wisconsin median
- Medicare services
- 18vs 9982% below
- Medicare patients
- 24vs 10076% below
- Part D claims
- 21vs 3743% below
Medians across 557 general surgeons in Wisconsin with Dmand AI profiles that report each measure.
Dr. Adajar'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. Adajar?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Adajar and other general surgeons in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marc Allan Adajar treated 24 Medicare patients in 2024, average age 73
CMS counts 24 Medicare patients who saw Dr. Adajar in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 3.16, 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. Adajar's median patient age at 30, with 50% women.
Medicare patients, 202424
Average age73
Average risk score3.16
Chronic conditions among Dr. Adajar's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes63%
- Mood disorders58%
- Arthritis54%
- Depression54%
- Chronic kidney disease50%
- Heart failure50%
Share of Medicare patients with each condition. A patient can have several.
Dr. Adajar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 30
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marc Allan Adajar wrote 21 Medicare Part D claims in 2020
In 2020, Dr. Adajar wrote 21 Medicare Part D claims. They cover 1 drug, with $158 in total drug cost. In 2019, CMS named 22 claims across 1 drug.
Part D claims, 202021
Drugs named by CMS1
Total drug cost$158
Dr. Adajar's most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 222020: 215%
Drugs named by CMS: 1 in 2020, 1 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Marc Allan Adajar has 2 publications on record
Dmand AI links 2 papers to Dr. Adajar.
Papers2
Recent publications by Dr. Adajar
Anti-Bacterial AgentsDebridementFasciitis, Necrotizing
See who Dr. Adajar researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Adajar 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. Marc Allan Adajar received $9,465 in industry payments from 2016 to 2025
CMS Open Payments shows 60 general payments to Dr. Adajar from 28 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 42% of the total. Baxter Healthcare paid the most, $3,712. It also lists 2 research payments totaling $1,613 in 2016.
General payments to Dr. Adajar by program year, 2016 to 2025
General payments to Dr. Adajar by kind, 2016 to 2025
$9.5Kin total
- Food and beverage$3,99042%
- Consulting fees$3,66039%
- Travel and lodging$92510%
- Speaker and faculty fees$8909%
Companies that paid Dr. Adajar 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. Marc Allan Adajar has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Adajar, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Adajar
- 2013
- CMS Stage 1 EHR
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. Marc Allan Adajar graduated from University of Santo Tomas
Dr. Adajar graduated from University of Santo Tomas in 2000. Dr. Adajar is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Marc Allan Adajar accepts plans from 14 insurance carriers
Dr. Adajar is in network with 14 carriers, including Elevance, HCSC and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Elevance
- HCSC
- Blue Cross Blue Shield of Michigan
- Cigna
- United Healthcare
- Humana
- Blue Cross Blue Shield of Massachusetts
- Molina
- +6 more carriersWith a free account
Plan types Dr. Adajar accepts, by number of carriers
- Medicare10
- PPO9
- HMO8
- POS6
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Marc Allan Adajar'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) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Marc Allan Adajar
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. Marc Allan Adajar's NPI number?
Dr. Marc Allan Adajar's NPI number is 1508947383. It was assigned on October 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marc Allan Adajar?
Dr. Marc Allan Adajar is a general surgeon in Sheboygan, Wisconsin. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Marc Allan Adajar practice?
Dr. Adajar practices at 3100 Superior Ave, Sheboygan, WI 53081. Dr. Adajar's primary practice is HSHS St. Nicholas Hospital in Sheboygan, Wisconsin, part of Hospital Sisters of St. Francis. Dmand AI also links Dr. Adajar to 2 group practices and clinics and 2 medical groups.
What is Dr. Marc Allan Adajar's office phone number?
The practice phone on file for Dr. Adajar is (920) 459-8300.
What is Dr. Marc Allan Adajar's medical license number?
Dr. Adajar holds Illinois license 36114923, one of the licenses on file in 2 states.
Which states has Dr. Marc Allan Adajar been licensed in?
Dmand AI has state licenses on file for Dr. Adajar in Illinois (2005 to 2026) and Indiana (2024 to 2025).
Which hospitals is Dr. Marc Allan Adajar affiliated with?
Dr. Adajar practices at HSHS St. Nicholas Hospital in Sheboygan, Wisconsin.
What medical group is Dr. Marc Allan Adajar part of?
Dr. Adajar is linked to Dreyer Medical Clinic (Advocate Medical Group). Dmand AI links Dr. Adajar to 2 more medical groups.
Does Dr. Marc Allan Adajar accept Medicare?
Yes. CMS data shows Dr. Adajar billed Medicare for 18 services in 2024.
How many Medicare patients does Dr. Marc Allan Adajar see?
CMS counts 24 Medicare patients who saw Dr. Adajar in 2024, with an average age of 73.
Show 8 more questionsShow fewer questions
Is Dr. Marc Allan Adajar board certified?
Yes. Dr. Adajar is board certified in surgery by the American Board of Surgery.
What services does Dr. Marc Allan Adajar bill to Medicare?
In 2024, Dr. Adajar's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Marc Allan Adajar go to medical school?
Dr. Adajar graduated from University of Santo Tomas in 2000.
What drugs does Dr. Marc Allan Adajar prescribe most?
In 2020 Medicare Part D data, Dr. Adajar's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Marc Allan Adajar received payments from drug or device companies?
CMS Open Payments shows $9,465 in general payments to Dr. Adajar from 28 companies from 2016 to 2025. The largest total came from Baxter Healthcare.
How long has Dr. Marc Allan Adajar been practicing?
Dr. Adajar graduated from medical school in 2000, 26 years ago.
Does Dr. Marc Allan Adajar do research?
Dmand AI links 2 publications to Dr. Adajar.
What insurance does Dr. Marc Allan Adajar accept?
Dr. Adajar is in network with 14 carriers, including Elevance, HCSC and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
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