Dr. Kristen Lynn Zack, MD
- Medicare services, 2024
- 192
- Medicare patients, 2024
- 125
- Part D claims, 2024
- 131
- Hospital affiliations
- 5
- Industry payments
- $652
- Practice address
- 1401 W 5th St, Sheridan, WY 82801
- Practice phone
- Call (307) 672-1044
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zack'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. Kristen Lynn Zack is a nephrologist in Sheridan, Wyoming
Dr. Zack practices at Sheridan Memorial Hospital in Sheridan, Wyoming, part of County of Sheridan.
Dr. Zack's NPI, 1376105692, was assigned on July 8, 2019. Dr. Zack graduated from Windsor University School of Medicine in 2019. Dr. Zack's Nevada license number on file is MD-26283.
- NPI
- 1376105692NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7012245475
- NPI enumeration date
- July 8, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (307) 672-1044
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kristen Lynn Zack practices at Sheridan Memorial Hospital in Sheridan, Wyoming
Dr. Zack's primary practice is Sheridan Memorial Hospital, at 1401 W 5th St, Sheridan, WY 82801 in Sheridan County. The practice phone is (307) 672-1044.
- Sheridan Memorial Hospital1401 W 5th St, Sheridan, WY 82801 · Sheridan CountyPhone(307) 672-1044
Source: Dmand AI Affiliation Data
Dr. Kristen Lynn Zack is affiliated with 8 sites of care and 1 medical group
Dr. Zack's primary practice is Sheridan Memorial Hospital in Sheridan, Wyoming, part of County of Sheridan. Dr. Zack is also affiliated with Billings Clinic Hospital. The medical group on file is Billings Clinic. Dmand AI also links Dr. Zack to 3 more hospitals, 1 group practice or clinic, 1 home health agency and 1 hospice, 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. Kristen Lynn Zack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zack practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sheridan Memorial Hospital | Available with a free account |
| +7 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across County of Sheridan and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Kristen Lynn Zack is one of 13 nephrologists in Wyoming
Nephrology is Dr. Zack's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Zack is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Zack's licenses on file in 3 states: Nevada, Ohio and California.
Specialties and state licenses
- Nephrology, NevadaPrimary
- Ohio license
- California license
Nephrologists near Dr. Zack
Counts of nephrologists 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. Kristen Lynn Zack billed Medicare for 192 services in 2024
CMS data shows 192 Medicare services from Dr. Zack across 5 procedure codes in 2024, for 125 Medicare patients. Medicare paid $22,077 for them. Every service was in an office.
Dr. Zack's Medicare services by type, 2024
- Office and hospital visits169
- Lab and pathology23
Dr. Zack compared with the Wyoming median for nephrologists, 2024
- Dr. Zack
- Wyoming median
- Medicare services
- 192vs 41253% below
- Medicare patients
- 125vs 24749% below
- Part D claims
- 60vs 53089% below
Medians across 13 nephrologists in Wyoming with Dmand AI profiles that report each measure.
Dr. Zack'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. Zack?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zack and other nephrologists in Wyoming.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kristen Lynn Zack treated 125 Medicare patients in 2024, average age 76
CMS counts 125 Medicare patients who saw Dr. Zack in 2024. The largest group is 75 to 84, with 51 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 10% are also on Medicaid. Their average risk score is 1.94, 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. Zack's median patient age at 73, with 40% women.
Dr. Zack's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Zack's Medicare patients by sex, 2024
- Women6250%
- Men6350%
Chronic conditions among Dr. Zack's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes44%
- Arthritis42%
- Ischemic heart disease37%
- Heart failure30%
- Atrial fibrillation23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zack's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women40%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kristen Lynn Zack wrote 131 Medicare Part D claims in 2024
In 2024, Dr. Zack wrote 131 Medicare Part D claims for 35 patients. 60% of them were for generic drugs. CMS names the drug for 60 of them, across 4 drugs with 11 or more claims each, at $23,764 in total drug cost. In 2023, CMS named 17 claims across 1 drug.
Dr. Zack's Part D claims by kind of drug, 2024
- Generic79 claims60%
- Brand-name52 claims40%
Dr. Zack'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 172024: 60253%
Drugs named by CMS: 4 in 2024, 1 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
How Dr. Kristen Lynn Zack takes part in Medicare
Dr. Zack accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Kristen Lynn Zack received $652 in industry payments from 2022 to 2025
CMS Open Payments shows 13 general payments to Dr. Zack from 10 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Aurinia Pharma U.S., Inc. paid the most, $148.
General payments to Dr. Zack by program year, 2022 to 2025
Companies that paid Dr. Zack the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kristen Lynn Zack graduated from Windsor University School of Medicine
Dr. Zack graduated from Windsor University School of Medicine in 2019.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Kristen Lynn Zack accepts plans from 16 insurance carriers
Dr. Zack is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +8 more carriersWith a free account
Plan types Dr. Zack accepts, by number of carriers
- PPO9
- Medicare8
- HMO6
- EPO4
- POS4
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Kristen Lynn Zack'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Kristen Lynn Zack
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. Kristen Lynn Zack's NPI number?
Dr. Kristen Lynn Zack's NPI number is 1376105692. It was assigned on July 8, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Kristen Lynn Zack?
Dr. Kristen Lynn Zack is a nephrologist in Sheridan, Wyoming. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Kristen Lynn Zack practice?
Dr. Zack practices at 1401 W 5th St, Sheridan, WY 82801. Dr. Zack's primary practice is Sheridan Memorial Hospital in Sheridan, Wyoming, part of County of Sheridan. Dmand AI also links Dr. Zack to 3 hospitals, 1 group practice or clinic, 1 home health agency and 1 hospice.
What is Dr. Kristen Lynn Zack's office phone number?
The practice phone on file for Dr. Zack is (307) 672-1044.
What is Dr. Kristen Lynn Zack's medical license number?
Dr. Zack's Nevada license number on file is MD-26283, one of the licenses on file in 3 states.
Which states has Dr. Kristen Lynn Zack been licensed in?
Dmand AI has state licenses on file for Dr. Zack in Nevada (2024 to 2025), Ohio and California (2022 to 2026).
Which hospitals is Dr. Kristen Lynn Zack affiliated with?
Dr. Zack practices at Sheridan Memorial Hospital in Sheridan, Wyoming. Dr. Zack is also affiliated with Billings Clinic Hospital. Dmand AI links Dr. Zack to 3 more hospitals.
What medical group is Dr. Kristen Lynn Zack part of?
Dr. Zack is linked to Billings Clinic.
Does Dr. Kristen Lynn Zack accept Medicare?
Yes. CMS data shows Dr. Zack billed Medicare for 192 services in 2024, and Dr. Zack accepts Medicare assignment.
How many Medicare patients does Dr. Kristen Lynn Zack see?
CMS counts 125 Medicare patients who saw Dr. Zack in 2024, with an average age of 76.
Show 7 more questionsShow fewer questions
Is Dr. Kristen Lynn Zack board certified?
Yes. Dr. Zack is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Kristen Lynn Zack bill to Medicare?
In 2024, Dr. Zack's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99205) and office visit, established patient (99215).
Where did Dr. Kristen Lynn Zack go to medical school?
Dr. Zack graduated from Windsor University School of Medicine in 2019.
What drugs does Dr. Kristen Lynn Zack prescribe most?
In 2024 Medicare Part D data, Dr. Zack's most prescribed drugs by claims were Amlodipine Besylate, Jardiance and Eplerenone.
Has Dr. Kristen Lynn Zack received payments from drug or device companies?
CMS Open Payments shows $652 in general payments to Dr. Zack from 10 companies from 2022 to 2025. The largest total came from Aurinia Pharma U.S., Inc.
How long has Dr. Kristen Lynn Zack been practicing?
Dr. Zack graduated from medical school in 2019, 7 years ago.
What insurance does Dr. Kristen Lynn Zack accept?
Dr. Zack is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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