Dr. Elizabeth K. McMasters, MD
- Medicare services, 2024
- 200
- Medicare patients, 2024
- 51
- Part D claims, 2024
- 589
- MIPS score, 2024
- 96
- Hospital affiliations
- 3
- Practice address
- 4201 Medical Center Drive, Mchenry, IL 60050
- Practice phone
- Call (815) 344-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. McMasters' 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. Elizabeth K. McMasters is a psychiatrist in Mchenry, Illinois
Dr. McMasters practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare.
Dr. McMasters' NPI, 1427067180, was assigned on August 5, 2006. Dr. McMasters graduated from Northwestern University Feinberg Medical School in 1992. Dr. McMasters holds Illinois license 036-087029.
- NPI
- 1427067180NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517046618
- NPI enumeration date
- August 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (815) 344-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Elizabeth K. McMasters practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois
Dr. McMasters' primary practice is Northwestern Medicine McHenry Hospital, at 4201 Medical Center Drive, Mchenry, IL 60050 in Mc Henry County. The practice phone is (815) 344-5000.
- Northwestern Medicine McHenry Hospital4201 Medical Center Drive, Mchenry, IL 60050 · Mc Henry CountyPhone(815) 344-5000
Source: Dmand AI Affiliation Data
Dr. Elizabeth K. McMasters is affiliated with 3 sites of care and 1 medical group
Dr. McMasters' primary practice is Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare. Dr. McMasters is also affiliated with Northwestern Medicine Central DuPage Hospital. The medical group on file is Northwestern Medicine Regional Medical Group. Dmand AI also links Dr. McMasters to 1 more hospital, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Elizabeth K. McMasters' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McMasters practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medicine McHenry Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Elizabeth K. McMasters is one of 1,527 psychiatrists in Illinois
Psychiatry is Dr. McMasters' primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. McMasters is licensed in Illinois.
Specialties and state licenses
- Psychiatry, IllinoisPrimary
Psychiatrists near Dr. McMasters
Counts of psychiatrists 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. Elizabeth K. McMasters billed Medicare for 200 services in 2024
CMS data shows 200 Medicare services from Dr. McMasters across 4 procedure codes in 2024, for 51 Medicare patients. Medicare paid $20,043 for them.
Dr. McMasters' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2982024: 20033%
Where Dr. McMasters' Medicare services took place, 2024
- In an office2513%
- In a facility17588%
Dr. McMasters compared with the Illinois median for psychiatrists, 2024
- Dr. McMasters
- Illinois median
- Medicare services
- 200vs 203Close to median
- Medicare patients
- 51vs 6319% below
- Part D claims
- 435vs 1742.5 times
Medians across 1,588 psychiatrists in Illinois with Dmand AI profiles that report each measure.
Dr. McMasters' 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. McMasters and other psychiatrists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Elizabeth K. McMasters treated 51 Medicare patients in 2024, average age 61
CMS counts 51 Medicare patients who saw Dr. McMasters in 2024. The largest group is under 65, with 25 patients. 75% of them have anxiety, and 75% have bipolar disorder. 41% are also on Medicaid. Their average risk score is 1.52, 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. McMasters' median patient age at 50, with 62% women.
Dr. McMasters' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. McMasters' Medicare patients by sex, 2024
- Women2651%
- Men2549%
Chronic conditions among Dr. McMasters' Medicare patients, 2024
- Anxiety75%
- Bipolar disorder75%
- Depression75%
- Mood disorders75%
- High blood pressure67%
- High cholesterol63%
- Arthritis57%
- Alcohol and drug use disorders51%
Share of Medicare patients with each condition. A patient can have several.
Dr. McMasters' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Elizabeth K. McMasters wrote 589 Medicare Part D claims in 2024
In 2024, Dr. McMasters wrote 589 Medicare Part D claims for 78 patients. 96% of them were for generic drugs. CMS names the drug for 435 of them, across 17 drugs with 11 or more claims each, at $9,788 in total drug cost. In 2023, CMS named 370 claims across 16 drugs.
Dr. McMasters' Part D claims by kind of drug, 2024
- Generic568 claims96%
- Brand-name21 claims4%
Dr. McMasters' 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. McMasters' Part D claims, 2024
- Antipsychotics, patients 65 and over14%85 of 589 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: 3702024: 43518%
Drugs named by CMS: 17 in 2024, 16 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. Elizabeth K. McMasters scored 96 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Dr. McMasters for performance year 2024, reported through an alternative payment model (APM). Dr. McMasters accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. McMasters as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. McMasters' MIPS scores, performance year 2024
- 96of 100Final score
- 88.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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. Elizabeth K. McMasters received $164 in industry payments in 2016
CMS Open Payments shows 5 general payments to Dr. McMasters from 2 drug and device companies in 2016. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $98.
Companies that paid Dr. McMasters 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. Elizabeth K. McMasters graduated from Northwestern University Feinberg Medical School
Dr. McMasters graduated from Northwestern University Feinberg Medical School in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Elizabeth K. McMasters'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)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. Elizabeth K. McMasters
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. Elizabeth K. McMasters' NPI number?
Dr. Elizabeth K. McMasters' NPI number is 1427067180. It was assigned on August 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Elizabeth K. McMasters?
Dr. Elizabeth K. McMasters is a psychiatrist in Mchenry, Illinois. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Elizabeth K. McMasters practice?
Dr. McMasters practices at 4201 Medical Center Drive, Mchenry, IL 60050. Dr. McMasters' primary practice is Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. McMasters to 1 hospital.
What is Dr. Elizabeth K. McMasters' office phone number?
The practice phone on file for Dr. McMasters is (815) 344-5000.
What is Dr. Elizabeth K. McMasters' medical license number?
Dr. McMasters holds Illinois license 036-087029.
Which hospitals is Dr. Elizabeth K. McMasters affiliated with?
Dr. McMasters practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois. Dr. McMasters is also affiliated with Northwestern Medicine Central DuPage Hospital. Dmand AI links Dr. McMasters to 1 more hospital.
What medical group is Dr. Elizabeth K. McMasters part of?
Dr. McMasters is linked to Northwestern Medicine Regional Medical Group.
Does Dr. Elizabeth K. McMasters accept Medicare?
Yes. CMS data shows Dr. McMasters billed Medicare for 200 services in 2024, and Dr. McMasters accepts Medicare assignment.
Does Dr. Elizabeth K. McMasters offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. McMasters as offering telehealth services.
What is Dr. Elizabeth K. McMasters' MIPS score?
Dr. McMasters' MIPS final score for performance year 2024 is 96 out of 100, reported through an alternative payment model (APM).
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Elizabeth K. McMasters see?
CMS counts 51 Medicare patients who saw Dr. McMasters in 2024, with an average age of 61.
What services does Dr. Elizabeth K. McMasters bill to Medicare?
In 2024, Dr. McMasters' most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
Where did Dr. Elizabeth K. McMasters go to medical school?
Dr. McMasters graduated from Northwestern University Feinberg Medical School in 1992.
What drugs does Dr. Elizabeth K. McMasters prescribe most?
In 2024 Medicare Part D data, Dr. McMasters' most prescribed drugs by claims were Quetiapine Fumarate, Lamotrigine and Gabapentin.
Has Dr. Elizabeth K. McMasters received payments from drug or device companies?
CMS Open Payments shows $164 in general payments to Dr. McMasters from 2 companies from 2016 to 2016. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Elizabeth K. McMasters been practicing?
Dr. McMasters graduated from medical school in 1992, 34 years ago.
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