Dr. Ann A. Koss, DO
- Medicare services, 2024
- 1,702
- Medicare patients, 2024
- 1,048
- MIPS score, 2024
- 90
- Hospital affiliations
- 5
- Industry payments
- $13
- Practice address
- One N Atkinson Drive, Ludington, MI 49431
- Practice phone
- Call (231) 843-2591
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Koss' 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. Ann A. Koss is a diagnostic radiologist in Ludington, Michigan
Dr. Koss practices at Corewell Health Ludington Hospital in Ludington, Michigan, part of Corewell Health.
Dr. Koss' NPI, 1467488759, was assigned on June 25, 2006. Dr. Koss graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1990. Dr. Koss holds Michigan license AK011095.
- NPI
- 1467488759NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345289849
- NPI enumeration date
- June 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (231) 843-2591
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ann A. Koss practices at 2 locations in Ludington, Michigan
Dr. Koss' primary practice is Corewell Health Ludington Hospital, at One N Atkinson Drive, Ludington, MI 49431 in Mason County. The practice phone is (231) 843-2591. Dr. Koss also practices at Spectrum Health Ludington Hospital, 1 Atkinson Dr, Ludington, MI 49431.
- Corewell Health Ludington HospitalPrimaryOne N Atkinson Drive, Ludington, MI 49431 · Mason CountyPhone(231) 843-2591
- Spectrum Health Ludington Hospital1 Atkinson Dr, Ludington, MI 49431 · Mason CountyPhone(231) 843-2591
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Ann A. Koss is affiliated with 5 sites of care and 1 medical group
Dr. Koss' primary practice is Corewell Health Ludington Hospital in Ludington, Michigan, part of Corewell Health. Dr. Koss is also affiliated with Corewell Health Grand Rapids Hospitals - Butterworth. The medical group on file is Advanced Radiology Services. Dmand AI also links Dr. Koss to 3 more hospitals, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ann A. Koss' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Koss practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Ludington Hospital | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ann A. Koss is one of 1,181 diagnostic radiologists in Michigan
Diagnostic radiology is Dr. Koss' primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Koss is licensed in Michigan.
Specialties and state licenses
- Diagnostic radiology, MichiganPrimary
Diagnostic radiologists near Dr. Koss
Counts of diagnostic radiologists 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. Ann A. Koss billed Medicare for 1,702 services in 2024
CMS data shows 1,702 Medicare services from Dr. Koss across 27 procedure codes in 2024, for 1,048 Medicare patients. Medicare paid $41,405 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Koss' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,5642024: 1,6435%
- Other services
- 2023: 412024: 422%
- Tests and treatments
- 2023: 272024: 1737%
- Surgery
- 2023: 112024: 0100%
Dr. Koss compared with the Michigan median for diagnostic radiologists, 2024
- Dr. Koss
- Michigan median
- Medicare services
- 1,702vs 1,658Close to median
- Medicare patients
- 1,048vs 1,30119% below
Medians across 1,132 diagnostic radiologists in Michigan with Dmand AI profiles that report each measure.
Dr. Koss' 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Koss and other diagnostic radiologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ann A. Koss treated 1,048 Medicare patients in 2024, average age 73
CMS counts 1,048 Medicare patients who saw Dr. Koss in 2024. The largest group is 65 to 74, with 507 patients. 74% of them have high cholesterol, and 68% have high blood pressure. 14% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Koss' median patient age at 64, with 81% women.
Dr. Koss' Medicare patients by age, 2024
Dr. Koss' Medicare patients by sex, 2024
- Women84180%
- Men20720%
Chronic conditions among Dr. Koss' Medicare patients, 2024
- High cholesterol74%
- High blood pressure68%
- Arthritis51%
- Mood disorders30%
- Anxiety27%
- Depression27%
- Diabetes22%
- Ischemic heart disease19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Koss' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women81%
- Men19%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ann A. Koss scored 90 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. Koss for performance year 2024, reported as part of a group. Dr. Koss accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Koss' MIPS scores, performance year 2024
- 90of 100Final score
- 91.3of 100Quality
- 40of 100Improvement Activities
- 79of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Ann A. Koss received $13 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Koss from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Guerbet LLC paid the most, $13.
Companies that paid Dr. Koss the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ann A. Koss graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville
Dr. Koss graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ann A. Koss'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 Affiliation DataDmand AI Practice 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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. Ann A. Koss
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. Ann A. Koss' NPI number?
Dr. Ann A. Koss' NPI number is 1467488759. It was assigned on June 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ann A. Koss?
Dr. Ann A. Koss is a diagnostic radiologist in Ludington, Michigan. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Ann A. Koss practice?
Dr. Koss practices at One N Atkinson Drive, Ludington, MI 49431. Dr. Koss also practices at 1 Atkinson Dr, Ludington, MI 49431. Dr. Koss' primary practice is Corewell Health Ludington Hospital in Ludington, Michigan, part of Corewell Health. Dmand AI also links Dr. Koss to 3 hospitals.
What is Dr. Ann A. Koss' office phone number?
The practice phone on file for Dr. Koss is (231) 843-2591.
What is Dr. Ann A. Koss' medical license number?
Dr. Koss holds Michigan license AK011095.
Which hospitals is Dr. Ann A. Koss affiliated with?
Dr. Koss practices at Corewell Health Ludington Hospital in Ludington, Michigan. Dr. Koss is also affiliated with Corewell Health Grand Rapids Hospitals - Butterworth. Dmand AI links Dr. Koss to 3 more hospitals.
What medical group is Dr. Ann A. Koss part of?
Dr. Koss is linked to Advanced Radiology Services.
Does Dr. Ann A. Koss accept Medicare?
Yes. CMS data shows Dr. Koss billed Medicare for 1,702 services in 2024, and Dr. Koss accepts Medicare assignment.
What is Dr. Ann A. Koss' MIPS score?
Dr. Koss' MIPS final score for performance year 2024 is 90 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ann A. Koss see?
CMS counts 1,048 Medicare patients who saw Dr. Koss in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Dr. Ann A. Koss bill to Medicare?
In 2024, Dr. Koss' most billed Medicare services were radiation oncology (77063), radiation oncology (77067) and radiation oncology (77085).
Where did Dr. Ann A. Koss go to medical school?
Dr. Koss graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1990.
Has Dr. Ann A. Koss received payments from drug or device companies?
CMS Open Payments shows $13 in general payments to Dr. Koss from 1 company from 2016 to 2016. The largest total came from Guerbet LLC.
How long has Dr. Ann A. Koss been practicing?
Dr. Koss graduated from medical school in 1990, 36 years ago.
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