JAMA Netw Open
Africa, EasternAfrica, SouthernEthnicity
Dr. Mark Baker, MD
NPI1023469640PAC ID8921392713
- Medicare services, 2024
- 808
- Medicare patients, 2024
- 733
- Part D claims, 2024
- 239
- Publications
- 3
- Hospital affiliations
- 2
- Practice address
- 1005 Broadway St, Quincy, IL 62301
- Practice phone
- Call (217) 223-1200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Mark Baker is an emergency medicine physician in Quincy, Illinois
Dr. Baker practices at Blessing Hospital in Quincy, Illinois, part of Blessing Health System.
Dr. Baker's NPI, 1023469640, was assigned on June 24, 2016. Dr. Baker graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2016. Dr. Baker holds Illinois license 036148580.
NPI and contact details
- NPI
- 1023469640NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921392713
- NPI enumeration date
- June 24, 2016
- NPI status
- Active
- Practice phone
- (217) 223-1200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Mark Baker practices at Blessing Hospital in Quincy, Illinois
Dr. Baker's primary practice is Blessing Hospital, at 1005 Broadway St, Quincy, IL 62301 in Adams County. The practice phone is (217) 223-1200.
- Blessing Hospital1005 Broadway St, Quincy, IL 62301 · Adams CountyPhone(217) 223-1200
Source: Dmand AI Affiliation Data
Dr. Mark Baker is affiliated with 2 sites of care and 2 medical groups
Dr. Baker's primary practice is Blessing Hospital in Quincy, Illinois, part of Blessing Health System. Dr. Baker is also affiliated with Illini Community Hospital. The medical group on file is Blessing Hospital. Dmand AI also links Dr. Baker to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Baker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Baker practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Blessing Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Baker is one of 2,385 emergency medicine physicians in Illinois
Emergency medicine is Dr. Baker's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Baker is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Baker's licenses on file in 2 states: Illinois and Iowa.
Specialties and state licenses
- Emergency medicine, IllinoisPrimary
- Iowa license
Emergency medicine physicians near Dr. Baker
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
2,385emergency medicine physicians in Illinois11emergency medicine physicians in Quincy11emergency medicine physicians at Blessing Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark Baker billed Medicare for 808 services in 2024
CMS data shows 808 Medicare services from Dr. Baker across 5 procedure codes in 2024, for 733 Medicare patients. Medicare paid $93,867 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024808
Medicare patients733
Paid by Medicare$93,867
Procedure codes5
Dr. Baker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7212024: 80812%
Dr. Baker compared with the Illinois median for emergency medicine physicians, 2024
- Dr. Baker
- Illinois median
- Medicare services
- 808vs 2742.9 times
- Medicare patients
- 733vs 2732.7 times
- Part D claims
- 118vs 452.6 times
Medians across 2,281 emergency medicine physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Baker'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. Baker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Baker and other emergency medicine physicians in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Baker treated 733 Medicare patients in 2024, average age 75
CMS counts 733 Medicare patients who saw Dr. Baker in 2024. The largest group is 75 to 84, with 248 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 1.77, 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. Baker's median patient age at 69, with 55% women.
Medicare patients, 2024733
Average age75
Average risk score1.77
Also on Medicaid24%
Dr. Baker's Medicare patients by age, 2024
Dr. Baker's Medicare patients by sex, 2024
- Women43159%
- Men30241%
Chronic conditions among Dr. Baker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Chronic kidney disease44%
- Ischemic heart disease43%
- Anxiety41%
- Diabetes40%
- Mood disorders38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Baker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Baker wrote 239 Medicare Part D claims in 2024
In 2024, Dr. Baker wrote 239 Medicare Part D claims for 181 patients. 92% of them were for generic drugs. CMS names the drug for 118 of them, across 5 drugs with 11 or more claims each, at $1,067 in total drug cost. In 2023, CMS named 103 claims across 5 drugs.
Part D claims, 2024239
Drugs named by CMS5
Total drug cost$1,067
Part D patients181
Dr. Baker's Part D claims by kind of drug, 2024
- Generic219 claims92%
- Brand-name20 claims8%
Dr. Baker'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. Baker's Part D claims, 2024
- Opioids6%15 of 239 claims
- Antibiotics37%89 of 239 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: 1032024: 11815%
Drugs named by CMS: 5 in 2024, 5 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
For MedTech and pharma teams
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Dr. Mark Baker has 3 publications on record
Dmand AI links 3 papers to Dr. Baker, published from 2021 to 2024. The most frequent topics are Africa, Southern.
Papers3
Years published2021 to 2024
Topics Dr. Baker writes about most
- Africa, Southern
Recent publications by Dr. Baker
Am J Hum Genet
Africa, SouthernBlack PeopleGenetics, Population
See who Dr. Baker researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Baker works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark Baker received $6 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Baker from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) paid the most, $6.
Companies that paid Dr. Baker 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 Baker graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Baker graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2016.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Baker'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)Medicare Part D Prescribers - by Provider (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 Baker
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 Baker's NPI number?
Dr. Mark Baker's NPI number is 1023469640. It was assigned on June 24, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Baker?
Dr. Mark Baker is an emergency medicine physician in Quincy, Illinois. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mark Baker practice?
Dr. Baker practices at 1005 Broadway St, Quincy, IL 62301. Dr. Baker's primary practice is Blessing Hospital in Quincy, Illinois, part of Blessing Health System. Dmand AI also links Dr. Baker to 1 medical group.
What is Dr. Mark Baker's office phone number?
The practice phone on file for Dr. Baker is (217) 223-1200.
What is Dr. Mark Baker's medical license number?
Dr. Baker holds Illinois license 036148580, one of the licenses on file in 2 states.
Which states has Dr. Mark Baker been licensed in?
Dmand AI has state licenses on file for Dr. Baker in Illinois and Iowa.
Which hospitals is Dr. Mark Baker affiliated with?
Dr. Baker practices at Blessing Hospital in Quincy, Illinois. Dr. Baker is also affiliated with Illini Community Hospital.
What medical group is Dr. Mark Baker part of?
Dr. Baker is linked to Blessing Hospital. Dmand AI links Dr. Baker to 1 more medical group.
Does Dr. Mark Baker accept Medicare?
Yes. CMS data shows Dr. Baker billed Medicare for 808 services in 2024.
How many Medicare patients does Dr. Mark Baker see?
CMS counts 733 Medicare patients who saw Dr. Baker in 2024, with an average age of 75.
Show 7 more questionsShow fewer questions
Is Dr. Mark Baker board certified?
Yes. Dr. Baker is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Mark Baker bill to Medicare?
In 2024, Dr. Baker's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and critical care (99291).
Where did Dr. Mark Baker go to medical school?
Dr. Baker graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2016.
What drugs does Dr. Mark Baker prescribe most?
In 2024 Medicare Part D data, Dr. Baker's most prescribed drugs by claims were Cephalexin, Ondansetron ODT and Prednisone.
Has Dr. Mark Baker received payments from drug or device companies?
CMS Open Payments shows $6 in general payments to Dr. Baker from 1 company from 2019 to 2019. The largest total came from ZOLL Services LLC (A/K/A ZOLL LifeCor Corp).
How long has Dr. Mark Baker been practicing?
Dr. Baker graduated from medical school in 2016, 10 years ago.
Does Dr. Mark Baker do research?
Dmand AI links 3 publications to Dr. Baker, published from 2021 to 2024.
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