Dr. Karna D. Sherwood, MD
- Medicare services, 2024
- 921
- Medicare patients, 2024
- 513
- Part D claims, 2024
- 4,982
- Publications
- 1
- Hospital affiliations
- 3
- Practice address
- 2 St Anthonys Way, Alton, IL 62002
- Practice phone
- Call (309) 683-5050
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
OSF Multi-Specialty Group
Alton, Illinois
Find Dr. Sherwood'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. Karna D. Sherwood is a neurologist in Alton, Illinois
Dr. Sherwood practices at OSF Multi-Specialty Group in Alton, Illinois.
Dr. Sherwood's NPI, 1619105293, was assigned on June 23, 2009. Dr. Sherwood holds Illinois license 036133471.
- NPI
- 1619105293NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638303472
- NPI enumeration date
- June 23, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (309) 683-5050
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karna D. Sherwood practices at OSF Multi-Specialty Group in Alton, Illinois
Dr. Sherwood's primary practice is OSF Multi-Specialty Group, at 2 St Anthonys Way, Alton, IL 62002 in Madison County. The practice phone is (309) 683-5050.
- OSF Multi-Specialty Group2 St Anthonys Way, Alton, IL 62002 · Madison CountyPhone(309) 683-5050
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Karna D. Sherwood is affiliated with 6 sites of care and 1 medical group
Dr. Sherwood's primary practice is OSF Multi-Specialty Group in Alton, Illinois. Dr. Sherwood is also affiliated with Alton Memorial Hospital. The medical group on file is OSF Multi-Specialty Group. Dmand AI also links Dr. Sherwood to 2 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Karna D. Sherwood's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sherwood practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OSF Multi-Specialty Group | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karna D. Sherwood is one of 822 neurologists in Illinois
Neurology is Dr. Sherwood's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Sherwood is licensed in Illinois.
Specialties and state licenses
- Neurology, IllinoisPrimary
Neurologists near Dr. Sherwood
Counts of neurologists 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. Karna D. Sherwood billed Medicare for 921 services in 2024
CMS data shows 921 Medicare services from Dr. Sherwood across 15 procedure codes in 2024, for 513 Medicare patients. Medicare paid $68,774 for them.
Dr. Sherwood's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7202024: 6835%
- Tests and treatments
- 2023: 1732024: 1815%
- Other services
- 2023: 02024: 57
Where Dr. Sherwood's Medicare services took place, 2024
- In an office63969%
- In a facility28231%
Dr. Sherwood compared with the Illinois median for neurologists, 2024
- Dr. Sherwood
- Illinois median
- Medicare services
- 921vs 4012.3 times
- Medicare patients
- 513vs 2252.3 times
- Part D claims
- 4,670vs 31814.7 times
Medians across 747 neurologists in Illinois with Dmand AI profiles that report each measure.
Dr. Sherwood'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. Sherwood?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sherwood and other neurologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karna D. Sherwood treated 513 Medicare patients in 2024, average age 72
CMS counts 513 Medicare patients who saw Dr. Sherwood in 2024. The largest group is 65 to 74, with 173 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 1.53, 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. Sherwood's median patient age at 67, with 59% women.
Dr. Sherwood's Medicare patients by age, 2024
Dr. Sherwood's Medicare patients by sex, 2024
- Women28756%
- Men22644%
Chronic conditions among Dr. Sherwood's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Mood disorders39%
- Diabetes36%
- Anxiety34%
- Depression34%
- Ischemic heart disease31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sherwood's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karna D. Sherwood wrote 4,982 Medicare Part D claims in 2024
In 2024, Dr. Sherwood wrote 4,982 Medicare Part D claims for 695 patients. 90% of them were for generic drugs. CMS names the drug for 4,670 of them, across 75 drugs with 11 or more claims each, at $1,034,935 in total drug cost. In 2023, CMS named 4,267 claims across 64 drugs.
Dr. Sherwood's Part D claims by kind of drug, 2024
- Generic4,487 claims90%
- Brand-name435 claims9%
- Other60 claims1%
Dr. Sherwood'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. Sherwood's Part D claims, 2024
- Opioids1%70 of 4,982 claims
- Antipsychotics, patients 65 and over3%127 of 4,982 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: 4,2672024: 4,6709%
Drugs named by CMS: 75 in 2024, 64 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. Karna D. Sherwood offers telehealth to Medicare patients
Dr. Sherwood accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Sherwood as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Karna D. Sherwood has 1 publication on record
Dmand AI links 1 paper to Dr. Sherwood in 2020. Dr. Sherwood's most frequent co-authors are Sujoy Gayen, Michael L. Rosenberg, MD and Vahid Tohidi.
Dr. Sherwood's most frequent co-authors
Recent publications by Dr. Sherwood
See who Dr. Sherwood researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Sherwood works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Karna D. Sherwood received $2,447 in industry payments from 2016 to 2025
CMS Open Payments shows 78 general payments to Dr. Sherwood from 11 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 60% of the total. LivaNova USA, Inc. paid the most, $980.
General payments to Dr. Sherwood by program year, 2016 to 2025
General payments to Dr. Sherwood by kind, 2016 to 2025
- Food and beverage$1,46560%
- Travel and lodging$82334%
- Education$1586%
Companies that paid Dr. Sherwood 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. Karna D. Sherwood'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 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) |
| 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) |
| 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. Karna D. Sherwood
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. Karna D. Sherwood's NPI number?
Dr. Karna D. Sherwood's NPI number is 1619105293. It was assigned on June 23, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Karna D. Sherwood?
Dr. Karna D. Sherwood is a neurologist in Alton, Illinois. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Karna D. Sherwood practice?
Dr. Sherwood practices at 2 St Anthonys Way, Alton, IL 62002. Dr. Sherwood's primary practice is OSF Multi-Specialty Group in Alton, Illinois. Dmand AI also links Dr. Sherwood to 2 hospitals, 1 group practice or clinic and 1 home health agency.
What is Dr. Karna D. Sherwood's office phone number?
The practice phone on file for Dr. Sherwood is (309) 683-5050.
What is Dr. Karna D. Sherwood's medical license number?
Dr. Sherwood holds Illinois license 036133471.
Which hospitals is Dr. Karna D. Sherwood affiliated with?
Dr. Sherwood is affiliated with Alton Memorial Hospital. Dmand AI links Dr. Sherwood to 2 more hospitals.
What medical group is Dr. Karna D. Sherwood part of?
Dr. Sherwood is linked to OSF Multi-Specialty Group.
Does Dr. Karna D. Sherwood accept Medicare?
Yes. CMS data shows Dr. Sherwood billed Medicare for 921 services in 2024, and Dr. Sherwood accepts Medicare assignment.
Does Dr. Karna D. Sherwood offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Sherwood as offering telehealth services.
How many Medicare patients does Dr. Karna D. Sherwood see?
CMS counts 513 Medicare patients who saw Dr. Sherwood in 2024, with an average age of 72.
Show 6 more questionsShow fewer questions
What services does Dr. Karna D. Sherwood bill to Medicare?
In 2024, Dr. Sherwood's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and hospital inpatient care (99222).
What drugs does Dr. Karna D. Sherwood prescribe most?
In 2024 Medicare Part D data, Dr. Sherwood's most prescribed drugs by claims were Donepezil HCl, Carbidopa-Levodopa and Gabapentin.
Has Dr. Karna D. Sherwood received payments from drug or device companies?
CMS Open Payments shows $2,447 in general payments to Dr. Sherwood from 11 companies from 2016 to 2025. The largest total came from LivaNova USA, Inc.
How long has Dr. Karna D. Sherwood been practicing?
Dr. Sherwood graduated from medical school in 2009, 17 years ago.
Does Dr. Karna D. Sherwood do research?
Dmand AI links 1 publication to Dr. Sherwood.
Who does Dr. Karna D. Sherwood publish with?
Dr. Sherwood's most frequent co-authors are Sujoy Gayen (1 shared paper), Michael L. Rosenberg, MD (1 shared paper) and Vahid Tohidi (1 shared paper).
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