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Dr. Tom Klein, MD
NPI1326094194PAC ID6103722137
- Medicare services, 2024
- 2,793
- Medicare patients, 2024
- 403
- Part D claims, 2024
- 54,342
- Publications
- 2
- MIPS score, 2024
- 24
- Practice address
- 1105 Milwaukee Ave, Riverwoods, IL 60015
- Practice phone
- Call (847) 325-5110
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Tamid Medical Group
Riverwoods, Illinois
Find Dr. Klein'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. Tom Klein is an internist in Riverwoods, Illinois
Dr. Klein practices at Tamid Medical Group in Riverwoods, Illinois.
Dr. Klein's NPI, 1326094194, was assigned on May 25, 2006. Dr. Klein holds Illinois license 036065537.
NPI and contact details
- NPI
- 1326094194NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103722137
- NPI enumeration date
- May 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 325-5110
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tom Klein practices at Tamid Medical Group in Riverwoods, Illinois
Dr. Klein's primary practice is Tamid Medical Group, at 1105 Milwaukee Ave, Riverwoods, IL 60015 in Lake County. The practice phone is (847) 325-5110.
- Tamid Medical Group1105 Milwaukee Ave, Riverwoods, IL 60015 · Lake CountyPhone(847) 325-5110
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Tom Klein is affiliated with 18 sites of care and 1 medical group
Dr. Klein's primary practice is Tamid Medical Group in Riverwoods, Illinois. Dr. Klein is also affiliated with Northwest Community Hospital. The medical group on file is Tamid Medical Group. Dmand AI also links Dr. Klein to 2 more hospitals, 5 home health agencies, 5 skilled nursing facilities, 3 hospices and 1 group practice or clinic, each named with a free account.
Tamid Medical GroupPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Tom Klein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klein practices, 17 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tamid Medical Group | Available with a free account |
| +17 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Tom Klein is one of 5,652 internists in Illinois
Internal medicine is Dr. Klein's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Klein's licenses on file in 2 states: Illinois and Wisconsin.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
- Wisconsin license
Internists near Dr. Klein
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
5,652internists in Illinois
2internists in Riverwoods
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Tom Klein billed Medicare for 2,793 services in 2024
CMS data shows 2,793 Medicare services from Dr. Klein across 19 procedure codes in 2024, for 403 Medicare patients. Medicare paid $176,771 for them.
Medicare services, 20242,793
Medicare patients403
Paid by Medicare$176,771
Procedure codes19
Dr. Klein's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,8812024: 2,65441%
- Other services
- 2023: 1772024: 13921%
Where Dr. Klein's Medicare services took place, 2024
- In an office65724%
- In a facility2,13676%
Dr. Klein compared with the Illinois median for internists, 2024
- Dr. Klein
- Illinois median
- Medicare services
- 2,793vs 5664.9 times
- Medicare patients
- 403vs 20894% above
- Part D claims
- 53,430vs 284188.1 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Klein'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Klein and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tom Klein treated 403 Medicare patients in 2024, average age 75
CMS counts 403 Medicare patients who saw Dr. Klein in 2024. The largest group is 65 to 74, with 120 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 70% are also on Medicaid. Their average risk score is 2.04, 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. Klein's median patient age at 68, with 44% women.
Medicare patients, 2024403
Average age75
Average risk score2.04
Also on Medicaid70%
Dr. Klein's Medicare patients by age, 2024
Dr. Klein's Medicare patients by sex, 2024
- Women21052%
- Men19348%
Chronic conditions among Dr. Klein's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Mood disorders52%
- Diabetes51%
- Arthritis49%
- Depression47%
- Alzheimer's and dementia46%
- Anxiety44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Klein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Tom Klein wrote 54,342 Medicare Part D claims in 2024
In 2024, Dr. Klein wrote 54,342 Medicare Part D claims for 1,064 patients. 88% of them were for generic drugs. CMS names the drug for 53,430 of them, across 310 drugs with 11 or more claims each, at $2,764,335 in total drug cost. In 2023, CMS named 39,913 claims across 283 drugs.
Part D claims, 202454,342
Drugs named by CMS310
Total drug cost$2.8M
Part D patients1,064
Dr. Klein's Part D claims by kind of drug, 2024
- Generic48,066 claims88%
- Brand-name5,927 claims11%
- Other349 claims1%
Dr. Klein'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. Klein's Part D claims, 2024
- Opioids1%365 of 54,342 claims
- Antibiotics1%471 of 54,342 claims
- Antipsychotics, patients 65 and over3%1,735 of 54,342 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: 39,9132024: 53,43034%
Drugs named by CMS: 310 in 2024, 283 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. Tom Klein scored 24 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 24 out of 100 for Dr. Klein for performance year 2024, reported individually. Dr. Klein accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Klein's MIPS scores, performance year 2024
- 24of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 80of 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. Tom Klein has 2 publications on record
Dmand AI links 2 papers to Dr. Klein, published from 2019 to 2020. Dr. Klein's most frequent co-authors are Stuart L. Goldstein, MD and Jean-Philippe Roy, MD.
Papers2
Years published2019 to 2020
Dr. Klein's most frequent co-authors
Recent publications by Dr. Klein
Continuous Renal Replacement TherapyEquipment DesignErythrocytes
See who Dr. Klein researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Klein works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Tom Klein received $658 in industry payments from 2016 to 2025
CMS Open Payments shows 18 general payments to Dr. Klein from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 70% of the total. Eli Lilly and Company paid the most, $142.
General payments to Dr. Klein by program year, 2016 to 2025
General payments to Dr. Klein by kind, 2016 to 2025
$658in total
- Food and beverage$46070%
- Education$19830%
Companies that paid Dr. Klein 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. Tom Klein's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Tom Klein
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. Tom Klein's NPI number?
Dr. Tom Klein's NPI number is 1326094194. It was assigned on May 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Tom Klein?
Dr. Tom Klein is an internist in Riverwoods, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Tom Klein practice?
Dr. Klein practices at 1105 Milwaukee Ave, Riverwoods, IL 60015. Dr. Klein's primary practice is Tamid Medical Group in Riverwoods, Illinois. Dmand AI also links Dr. Klein to 2 hospitals, 5 home health agencies, 5 skilled nursing facilities, 3 hospices and 1 group practice or clinic.
What is Dr. Tom Klein's office phone number?
The practice phone on file for Dr. Klein is (847) 325-5110.
What is Dr. Tom Klein's medical license number?
Dr. Klein holds Illinois license 036065537, one of the licenses on file in 2 states.
Which states has Dr. Tom Klein been licensed in?
Dmand AI has state licenses on file for Dr. Klein in Illinois and Wisconsin.
Which hospitals is Dr. Tom Klein affiliated with?
Dr. Klein is affiliated with Northwest Community Hospital. Dmand AI links Dr. Klein to 2 more hospitals.
What medical group is Dr. Tom Klein part of?
Dr. Klein is linked to Tamid Medical Group.
Does Dr. Tom Klein accept Medicare?
Yes. CMS data shows Dr. Klein billed Medicare for 2,793 services in 2024, and Dr. Klein accepts Medicare assignment.
What is Dr. Tom Klein's MIPS score?
Dr. Klein's MIPS final score for performance year 2024 is 24 out of 100, reported individually.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Tom Klein see?
CMS counts 403 Medicare patients who saw Dr. Klein in 2024, with an average age of 75.
What services does Dr. Tom Klein bill to Medicare?
In 2024, Dr. Klein's most billed Medicare services were care management and other visits (99424), home visit (99349) and nursing facility care (99309).
What drugs does Dr. Tom Klein prescribe most?
In 2024 Medicare Part D data, Dr. Klein's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. Tom Klein received payments from drug or device companies?
CMS Open Payments shows $658 in general payments to Dr. Klein from 10 companies from 2016 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Tom Klein been practicing?
Dr. Klein graduated from medical school in 1976, 50 years ago.
Does Dr. Tom Klein do research?
Dmand AI links 2 publications to Dr. Klein, published from 2019 to 2020.
Who does Dr. Tom Klein publish with?
Dr. Klein's most frequent co-authors are Stuart L. Goldstein, MD (1 shared paper) and Jean-Philippe Roy, MD (1 shared paper).
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