Bariatric SurgeryBrainGastric Bypass
Dr. Kerstyn C. Zalesin, MD
NPI1285683821PAC ID9830131762
- Medicare services, 2024
- 272
- Medicare patients, 2024
- 75
- Part D claims, 2024
- 586
- Publications
- 6
- MIPS score, 2024
- 84
- Practice address
- 3601 W Thirteen Mile Rd, Royal Oak, MI 48073
- Practice phone
- Call (248) 898-5400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Zalesin'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. Kerstyn C. Zalesin is an internist in Royal Oak, Michigan
Dr. Zalesin practices at Corewell Health William Beaumont University Hospital in Royal Oak, Michigan, part of Corewell Health.
Dr. Zalesin's NPI, 1285683821, was assigned on May 10, 2006. Dr. Zalesin graduated from Wayne State University School of Medicine in 1995. Dr. Zalesin holds Michigan license 4301065660.
NPI and contact details
- NPI
- 1285683821NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830131762
- NPI enumeration date
- May 10, 2006
- NPI status
- Active
- Offers telehealth
- Yes
- Practice phone
- (248) 898-5400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kerstyn C. Zalesin practices at Corewell Health William Beaumont University Hospital in Royal Oak, Michigan
Dr. Zalesin's primary practice is Corewell Health William Beaumont University Hospital, at 3601 W Thirteen Mile Rd, Royal Oak, MI 48073 in Oakland County. The practice phone is (248) 898-5400.
- Corewell Health William Beaumont University Hospital3601 W Thirteen Mile Rd, Royal Oak, MI 48073 · Oakland CountyPhone(248) 898-5400
Source: Dmand AI Affiliation Data
Dr. Kerstyn C. Zalesin is affiliated with 3 sites of care and 1 medical group
Dr. Zalesin's primary practice is Corewell Health William Beaumont University Hospital in Royal Oak, Michigan, part of Corewell Health. Dr. Zalesin is also affiliated with Corewell Health Beaumont Troy Hospital. The medical group on file is Beaumont Medical Group - Specialty Services. Dmand AI also links Dr. Zalesin to 1 more group practice or clinic, named with a free account.
Corewell Health Beaumont Troy HospitalBeaumont Medical Group - Specialty Services1 group practice or clinicName with a free account
See all 4 affiliations for Dr. ZalesinSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kerstyn C. Zalesin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zalesin practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health William Beaumont University Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Kerstyn C. Zalesin is one of 4,804 internists in Michigan
Internal medicine is Dr. Zalesin's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Zalesin is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Internists near Dr. Zalesin
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
4,804internists in Michigan404internists in Royal Oak362internists at Corewell Health William Beaumont University Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Kerstyn C. Zalesin billed Medicare for 272 services in 2024
CMS data shows 272 Medicare services from Dr. Zalesin across 5 procedure codes in 2024, for 75 Medicare patients. Medicare paid $14,812 for them. Every service was in an office.
Medicare services, 2024272
Medicare patients75
Paid by Medicare$14,812
Procedure codes5
Dr. Zalesin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1992024: 1867%
- Tests and treatments
- 2023: 472024: 462%
- Drugs given in the office
- 2023: 452024: 4011%
Dr. Zalesin compared with the Michigan median for internists, 2024
- Dr. Zalesin
- Michigan median
- Medicare services
- 272vs 42336% below
- Medicare patients
- 75vs 15953% below
- Part D claims
- 441vs 31440% above
Medians across 4,524 internists in Michigan with Dmand AI profiles that report each measure.
Dr. Zalesin'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. Kerstyn C. Zalesin treated 75 Medicare patients in 2024, average age 63
CMS counts 75 Medicare patients who saw Dr. Zalesin in 2024. The largest group is under 65, with 36 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 1.28, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Zalesin's median patient age at 51, with 75% women.
Medicare patients, 202475
Average age63
Average risk score1.28
Also on Medicaid31%
Dr. Zalesin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Zalesin's Medicare patients by sex, 2024
- Women5776%
- Men1824%
Chronic conditions among Dr. Zalesin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Anxiety57%
- Diabetes55%
- Mood disorders53%
- Depression47%
- Ischemic heart disease33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zalesin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women75%
- Men23%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kerstyn C. Zalesin wrote 586 Medicare Part D claims in 2024
In 2024, Dr. Zalesin wrote 586 Medicare Part D claims for 98 patients. CMS names the drug for 441 of them, across 10 drugs with 11 or more claims each, at $343,526 in total drug cost. In 2023, CMS named 490 claims across 8 drugs.
Part D claims, 2024586
Drugs named by CMS10
Total drug cost$343,526
Part D patients98
Dr. Zalesin'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: 4902024: 44110%
Drugs named by CMS: 10 in 2024, 8 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. Kerstyn C. Zalesin scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Zalesin for performance year 2024, reported as part of a group. CMS lists Dr. Zalesin as offering telehealth.
- Offers telehealth
- Yes
Dr. Zalesin's MIPS scores, performance year 2024
- 84of 100Final score
- 66.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 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. Kerstyn C. Zalesin has 6 publications on record
Dmand AI links 6 papers to Dr. Zalesin, published from 2006 to 2022. The most frequent topics are Bariatric Surgery, Body Mass Index and Gastric Bypass. Dr. Zalesin's most frequent co-authors are Peter Andrew McCullough, MD, MPH and Eric David Peterson, MD.
Papers6
Years published2006 to 2022
Dr. Zalesin's papers by year, 2006 to 2022
Topics Dr. Zalesin writes about most
- Bariatric Surgery
- Body Mass Index
- Gastric Bypass
- Obesity
- Obesity, Morbid
Dr. Zalesin's most frequent co-authors
Recent publications by Dr. Zalesin
Bariatric SurgeryBody-Weight TrajectoryGrounded Theory
Metab Syndr Relat Disord
Absorptiometry, PhotonAdipose TissueBariatric Surgery
See who Dr. Zalesin researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zalesin 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. Kerstyn C. Zalesin received $430 in industry payments from 2017 to 2024
CMS Open Payments shows 11 general payments to Dr. Zalesin from 3 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 97% of the total. Covidien LP paid the most, $224.
General payments to Dr. Zalesin by program year, 2017 to 2024
General payments to Dr. Zalesin by kind, 2017 to 2024
$430in total
- Food and beverage$41997%
- Education$123%
Companies that paid Dr. Zalesin the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kerstyn C. Zalesin graduated from Wayne State University School of Medicine
Dr. Zalesin graduated from Wayne State University School of Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kerstyn C. Zalesin'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) |
| 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) |
| 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. Kerstyn C. Zalesin
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. Kerstyn C. Zalesin's NPI number?
Dr. Kerstyn C. Zalesin's NPI number is 1285683821. It was assigned on May 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kerstyn C. Zalesin?
Dr. Kerstyn C. Zalesin is an internist in Royal Oak, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kerstyn C. Zalesin practice?
Dr. Zalesin practices at 3601 W Thirteen Mile Rd, Royal Oak, MI 48073. Dr. Zalesin's primary practice is Corewell Health William Beaumont University Hospital in Royal Oak, Michigan, part of Corewell Health. Dmand AI also links Dr. Zalesin to 1 group practice or clinic.
What is Dr. Kerstyn C. Zalesin's office phone number?
The practice phone on file for Dr. Zalesin is (248) 898-5400.
What is Dr. Kerstyn C. Zalesin's medical license number?
Dr. Zalesin holds Michigan license 4301065660.
Which hospitals is Dr. Kerstyn C. Zalesin affiliated with?
Dr. Zalesin practices at Corewell Health William Beaumont University Hospital in Royal Oak, Michigan. Dr. Zalesin is also affiliated with Corewell Health Beaumont Troy Hospital.
What medical group is Dr. Kerstyn C. Zalesin part of?
Dr. Zalesin is linked to Beaumont Medical Group - Specialty Services.
Does Dr. Kerstyn C. Zalesin accept Medicare?
Yes. CMS data shows Dr. Zalesin billed Medicare for 272 services in 2024.
Does Dr. Kerstyn C. Zalesin offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Zalesin as offering telehealth services.
What is Dr. Kerstyn C. Zalesin's MIPS score?
Dr. Zalesin's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Kerstyn C. Zalesin see?
CMS counts 75 Medicare patients who saw Dr. Zalesin in 2024, with an average age of 63.
What services does Dr. Kerstyn C. Zalesin bill to Medicare?
In 2024, Dr. Zalesin's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and infusion or chemotherapy administration (96372).
Where did Dr. Kerstyn C. Zalesin go to medical school?
Dr. Zalesin graduated from Wayne State University School of Medicine in 1995.
What drugs does Dr. Kerstyn C. Zalesin prescribe most?
In 2024 Medicare Part D data, Dr. Zalesin's most prescribed drugs by claims were Ozempic, Mounjaro and Trulicity.
Has Dr. Kerstyn C. Zalesin received payments from drug or device companies?
CMS Open Payments shows $430 in general payments to Dr. Zalesin from 3 companies from 2017 to 2024. The largest total came from Covidien LP.
How long has Dr. Kerstyn C. Zalesin been practicing?
Dr. Zalesin graduated from medical school in 1995, 31 years ago.
Does Dr. Kerstyn C. Zalesin do research?
Dmand AI links 6 publications to Dr. Zalesin, published from 2006 to 2022.
Who does Dr. Kerstyn C. Zalesin publish with?
Dr. Zalesin's most frequent co-authors are Peter Andrew McCullough, MD, MPH (1 shared paper) and Eric David Peterson, MD (1 shared paper).
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