Dr. Linus H. Ema, DO
- Medicare services, 2024
- 707
- Medicare patients, 2024
- 121
- Part D claims, 2024
- 6,692
- Hospital affiliations
- 3
- Industry payments
- $822
- Practice address
- 2535 S. Martin Luther King Dr., Chicago, IL 60616
- Practice phone
- Call (312) 674-5094
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advocate Sykes Outpatient Center
Mammography / Breast Imaging Center · Chicago, Illinois
Find Dr. Ema'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. Linus H. Ema is an internist in Chicago, Illinois
Dr. Ema practices at Advocate Sykes Outpatient Center in Chicago, Illinois.
Dr. Ema's NPI, 1891728010, was assigned on July 9, 2006. Dr. Ema holds Illinois license 036-087190.
- NPI
- 1891728010NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921149170
- NPI enumeration date
- July 9, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (312) 674-5094
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Linus H. Ema practices at Advocate Sykes Outpatient Center in Chicago, Illinois
Dr. Ema's primary practice is Advocate Sykes Outpatient Center, at 2535 S. Martin Luther King Dr., Chicago, IL 60616. The practice phone is (312) 674-5094.
- Advocate Sykes Outpatient Center2535 S. Martin Luther King Dr., Chicago, IL 60616Phone(312) 674-5094
Source: Dmand AI Affiliation Data
Dr. Linus H. Ema is affiliated with 7 sites of care and 2 medical groups
Dr. Ema's primary practice is Advocate Sykes Outpatient Center in Chicago, Illinois. Dr. Ema is also affiliated with Advocate Illinois Masonic Medical Center. The medical group on file is Dreyer Medical Clinic (Advocate Medical Group). Dmand AI also links Dr. Ema to 2 more hospitals, 2 group practices and clinics, 1 home health agency and 1 medical group, each named with a free account. Dr. Ema's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Linus H. Ema's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ema practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Sykes Outpatient Center | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Linus H. Ema is one of 5,652 internists in Illinois
Internal medicine is Dr. Ema's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ema is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Ema
Counts of internists 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. Linus H. Ema billed Medicare for 707 services in 2024
CMS data shows 707 Medicare services from Dr. Ema across 11 procedure codes in 2024, for 121 Medicare patients. Medicare paid $39,355 for them. Every service was in an office.
Dr. Ema's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3112024: 2965%
- Surgery
- 2023: 1592024: 1654%
- Tests and treatments
- 2023: 952024: 14148%
- Other services
- 2023: 972024: 8215%
- Lab and pathology
- 2023: 172024: 2335%
Dr. Ema compared with the Illinois median for internists, 2024
- Dr. Ema
- Illinois median
- Medicare services
- 707vs 56625% above
- Medicare patients
- 121vs 20842% below
- Part D claims
- 6,103vs 28421.5 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Ema'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. Ema?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ema and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Linus H. Ema treated 121 Medicare patients in 2024, average age 76
CMS counts 121 Medicare patients who saw Dr. Ema in 2024. The largest group is 65 to 74, with 51 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.32, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ema's median patient age at 75, with 66% women.
Dr. Ema's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ema's Medicare patients by sex, 2024
- Women8369%
- Men3831%
Chronic conditions among Dr. Ema's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes45%
- Arthritis41%
- Chronic kidney disease41%
- Heart failure24%
- Atrial fibrillation17%
- Ischemic heart disease17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ema's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women66%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Linus H. Ema wrote 6,692 Medicare Part D claims in 2024
In 2024, Dr. Ema wrote 6,692 Medicare Part D claims for 360 patients. 88% of them were for generic drugs. CMS names the drug for 6,103 of them, across 111 drugs with 11 or more claims each, at $443,734 in total drug cost. In 2023, CMS named 5,912 claims across 108 drugs.
Dr. Ema's Part D claims by kind of drug, 2024
- Generic5,907 claims88%
- Brand-name685 claims10%
- Other100 claims1%
Dr. Ema'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. Ema's Part D claims, 2024
- Opioids2%145 of 6,692 claims
- Antibiotics2%137 of 6,692 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: 5,9122024: 6,1033%
Drugs named by CMS: 111 in 2024, 108 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. Linus H. Ema offers telehealth to Medicare patients
Dr. Ema accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ema as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Linus H. Ema received $822 in industry payments from 2016 to 2025
CMS Open Payments shows 49 general payments to Dr. Ema from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Novo Nordisk Inc paid the most, $212.
General payments to Dr. Ema by program year, 2016 to 2025
General payments to Dr. Ema by kind, 2016 to 2025
- Food and beverage$78495%
- Education$395%
Companies that paid Dr. Ema the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Linus H. Ema'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Linus H. Ema
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. Linus H. Ema's NPI number?
Dr. Linus H. Ema's NPI number is 1891728010. It was assigned on July 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Linus H. Ema?
Dr. Linus H. Ema is an internist in Chicago, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Linus H. Ema practice?
Dr. Ema practices at 2535 S. Martin Luther King Dr., Chicago, IL 60616. Dr. Ema's primary practice is Advocate Sykes Outpatient Center in Chicago, Illinois. Dmand AI also links Dr. Ema to 2 hospitals, 2 group practices and clinics, 1 home health agency and 1 medical group.
What is Dr. Linus H. Ema's office phone number?
The practice phone on file for Dr. Ema is (312) 674-5094.
What is Dr. Linus H. Ema's medical license number?
Dr. Ema holds Illinois license 036-087190.
Which hospitals is Dr. Linus H. Ema affiliated with?
Dr. Ema is affiliated with Advocate Illinois Masonic Medical Center. Dmand AI links Dr. Ema to 2 more hospitals.
What medical group is Dr. Linus H. Ema part of?
Dr. Ema is linked to Dreyer Medical Clinic (Advocate Medical Group). Dmand AI links Dr. Ema to 1 more medical group.
Does Dr. Linus H. Ema accept Medicare?
Yes. CMS data shows Dr. Ema billed Medicare for 707 services in 2024, and Dr. Ema accepts Medicare assignment.
Does Dr. Linus H. Ema offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ema as offering telehealth services.
How many Medicare patients does Dr. Linus H. Ema see?
CMS counts 121 Medicare patients who saw Dr. Ema in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Dr. Linus H. Ema bill to Medicare?
In 2024, Dr. Ema's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and heart test or procedure (93793).
What drugs does Dr. Linus H. Ema prescribe most?
In 2024 Medicare Part D data, Dr. Ema's most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Amlodipine Besylate.
Has Dr. Linus H. Ema received payments from drug or device companies?
CMS Open Payments shows $822 in general payments to Dr. Ema from 10 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Linus H. Ema been practicing?
Dr. Ema graduated from medical school in 1989, 37 years ago.
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