Dr. Zachariah Gurnsey, MD
- Medicare services, 2024
- 399
- Medicare patients, 2024
- 150
- Part D claims, 2024
- 104
- MIPS score, 2024
- 75
- Hospital affiliations
- 1
- Practice address
- 701 N First St, Springfield, IL 62702
- Practice phone
- Call (217) 788-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Zachariah Gurnsey is an internist in Springfield, Illinois
Dr. Gurnsey practices at Springfield Memorial Hospital in Springfield, Illinois, part of Memorial Health System.
Dr. Gurnsey's NPI, 1003038423, was assigned on May 3, 2007. Dr. Gurnsey graduated from Southern Illinois University School of Medicine in 2006. Dr. Gurnsey holds Illinois license 036-121679.
- NPI
- 1003038423NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799836631
- NPI enumeration date
- May 3, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (217) 788-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Zachariah Gurnsey practices at Springfield Memorial Hospital in Springfield, Illinois
Dr. Gurnsey's primary practice is Springfield Memorial Hospital, at 701 N First St, Springfield, IL 62702 in Sangamon County. The practice phone is (217) 788-3000.
- Springfield Memorial Hospital701 N First St, Springfield, IL 62702 · Sangamon CountyPhone(217) 788-3000
Source: Dmand AI Affiliation Data
Dr. Zachariah Gurnsey is affiliated with 3 sites of care and 2 medical groups
Dr. Gurnsey's primary practice is Springfield Memorial Hospital in Springfield, Illinois, part of Memorial Health System. The medical group on file is SIU Medicine. Dmand AI also links Dr. Gurnsey to 1 more community health center, 1 group practice or clinic and 1 medical group, 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. Zachariah Gurnsey's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gurnsey practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Springfield Memorial Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Zachariah Gurnsey is one of 5,652 internists in Illinois
Internal medicine is Dr. Gurnsey's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gurnsey is board certified in internal medicine by the American Board of Internal Medicine. Dr. Gurnsey is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Gurnsey
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. Zachariah Gurnsey billed Medicare for 399 services in 2024
CMS data shows 399 Medicare services from Dr. Gurnsey across 4 procedure codes in 2024, for 150 Medicare patients. Medicare paid $36,651 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Gurnsey's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3062024: 39930%
Dr. Gurnsey compared with the Illinois median for internists, 2024
- Dr. Gurnsey
- Illinois median
- Medicare services
- 399vs 56630% below
- Medicare patients
- 150vs 20828% below
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Gurnsey'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Zachariah Gurnsey treated 150 Medicare patients in 2024, average age 72
CMS counts 150 Medicare patients who saw Dr. Gurnsey in 2024. The largest group is 65 to 74, with 54 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 39% are also on Medicaid. Their average risk score is 2.75, 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. Gurnsey's median patient age at 72, with 51% women.
Dr. Gurnsey's Medicare patients by age, 2024
Dr. Gurnsey's Medicare patients by sex, 2024
- Women6745%
- Men8355%
Chronic conditions among Dr. Gurnsey's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Ischemic heart disease59%
- Diabetes51%
- Mood disorders51%
- Chronic kidney disease50%
- Depression47%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gurnsey's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Zachariah Gurnsey wrote 104 Medicare Part D claims in 2024
In 2024, Dr. Gurnsey wrote 104 Medicare Part D claims for 38 patients. 84% of them were for generic drugs.
Dr. Gurnsey's Part D claims by kind of drug, 2024
- Generic87 claims84%
- Brand-name and other17 claims16%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Zachariah Gurnsey scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Gurnsey for performance year 2024, reported as part of a group. Dr. Gurnsey accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
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. Zachariah Gurnsey received $10,157 in industry payments from 2016 to 2017
CMS Open Payments shows 2 general payments to Dr. Gurnsey from 1 drug or device company from 2016 to 2017. Consulting fees make up the largest share, 100% of the total. Pfizer Inc. paid the most, $10,157.
General payments to Dr. Gurnsey by program year, 2016 to 2017
Companies that paid Dr. Gurnsey the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Zachariah Gurnsey graduated from Southern Illinois University School of Medicine
Dr. Gurnsey graduated from Southern Illinois University School of Medicine in 2006.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Zachariah Gurnsey'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 (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. Zachariah Gurnsey
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. Zachariah Gurnsey's NPI number?
Dr. Zachariah Gurnsey's NPI number is 1003038423. It was assigned on May 3, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Zachariah Gurnsey?
Dr. Zachariah Gurnsey is an internist in Springfield, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Zachariah Gurnsey practice?
Dr. Gurnsey practices at 701 N First St, Springfield, IL 62702. Dr. Gurnsey's primary practice is Springfield Memorial Hospital in Springfield, Illinois, part of Memorial Health System. Dmand AI also links Dr. Gurnsey to 1 community health center, 1 group practice or clinic and 1 medical group.
What is Dr. Zachariah Gurnsey's office phone number?
The practice phone on file for Dr. Gurnsey is (217) 788-3000.
What is Dr. Zachariah Gurnsey's medical license number?
Dr. Gurnsey holds Illinois license 036-121679.
Which hospitals is Dr. Zachariah Gurnsey affiliated with?
Dr. Gurnsey practices at Springfield Memorial Hospital in Springfield, Illinois.
What medical group is Dr. Zachariah Gurnsey part of?
Dr. Gurnsey is linked to SIU Medicine. Dmand AI links Dr. Gurnsey to 1 more medical group.
Does Dr. Zachariah Gurnsey accept Medicare?
Yes. CMS data shows Dr. Gurnsey billed Medicare for 399 services in 2024, and Dr. Gurnsey accepts Medicare assignment.
What is Dr. Zachariah Gurnsey's MIPS score?
Dr. Gurnsey's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Dr. Zachariah Gurnsey see?
CMS counts 150 Medicare patients who saw Dr. Gurnsey in 2024, with an average age of 72.
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Is Dr. Zachariah Gurnsey board certified?
Yes. Dr. Gurnsey is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Zachariah Gurnsey bill to Medicare?
In 2024, Dr. Gurnsey's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
Where did Dr. Zachariah Gurnsey go to medical school?
Dr. Gurnsey graduated from Southern Illinois University School of Medicine in 2006.
Has Dr. Zachariah Gurnsey received payments from drug or device companies?
CMS Open Payments shows $10,157 in general payments to Dr. Gurnsey from 1 company from 2016 to 2017. The largest total came from Pfizer Inc.
How long has Dr. Zachariah Gurnsey been practicing?
Dr. Gurnsey graduated from medical school in 2006, 20 years ago.
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