Dr. Walter Gregory Korytowsky, MD
- Medicare services, 2024
- 974
- Medicare patients, 2024
- 350
- Part D claims, 2024
- 477
- Hospital affiliations
- 1
- Industry payments
- $42
- Practice address
- 7070 E N Dr, Battle Creek, MI 49014
- Practice phone
- Call (269) 660-1670
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Dermatology & Skin Surgery Center
Battle Creek, Michigan
Find Dr. Korytowsky's professional email, personal email and mobile number
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Dr. Walter Gregory Korytowsky is a dermatologist in Battle Creek, Michigan
Dr. Korytowsky practices at Dermatology & Skin Surgery Center in Battle Creek, Michigan.
Dr. Korytowsky's NPI, 1043325632, was assigned on August 21, 2006. Dr. Korytowsky graduated from University of Michigan Medical School in 1977. Dr. Korytowsky holds Michigan license 4301040841.
- NPI
- 1043325632NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022045871
- NPI enumeration date
- August 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (269) 660-1670
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Walter Gregory Korytowsky practices at Dermatology & Skin Surgery Center in Battle Creek, Michigan
Dr. Korytowsky's primary practice is Dermatology & Skin Surgery Center, at 7070 E N Dr, Battle Creek, MI 49014 in Calhoun County. The practice phone is (269) 660-1670.
- Dermatology & Skin Surgery Center7070 E N Dr, Battle Creek, MI 49014 · Calhoun CountyPhone(269) 660-1670
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Walter Gregory Korytowsky is affiliated with 3 sites of care and 1 medical group
Dr. Korytowsky's primary practice is Dermatology & Skin Surgery Center in Battle Creek, Michigan. Dr. Korytowsky is also affiliated with Hillsdale Hospital. The medical group on file is Dermatology & Skin Surgery Center. Dmand AI also links Dr. Korytowsky to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Walter Gregory Korytowsky's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Korytowsky practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dermatology & Skin Surgery Center | 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. Walter Gregory Korytowsky is one of 430 dermatologists in Michigan
Dermatology is Dr. Korytowsky's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Korytowsky is licensed in Michigan.
Specialties and state licenses
- Dermatology, MichiganPrimary
Dermatologists near Dr. Korytowsky
Counts of dermatologists 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. Walter Gregory Korytowsky billed Medicare for 974 services in 2024
CMS data shows 974 Medicare services from Dr. Korytowsky across 8 procedure codes in 2024, for 350 Medicare patients. Medicare paid $42,235 for them. Every service was in an office.
Dr. Korytowsky's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 5342024: 4957%
- Office and hospital visits
- 2023: 5622024: 47915%
Dr. Korytowsky compared with the Michigan median for dermatologists, 2024
- Dr. Korytowsky
- Michigan median
- Medicare services
- 974vs 1,43332% below
- Medicare patients
- 350vs 3869% below
- Part D claims
- 379vs 52828% below
Medians across 396 dermatologists in Michigan with Dmand AI profiles that report each measure.
Dr. Korytowsky'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. Korytowsky and other dermatologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Walter Gregory Korytowsky treated 350 Medicare patients in 2024, average age 76
CMS counts 350 Medicare patients who saw Dr. Korytowsky in 2024. The largest group is 75 to 84, with 146 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 5% are also on Medicaid. Their average risk score is 1.17, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Korytowsky's median patient age at 73, with 46% women.
Dr. Korytowsky's Medicare patients by age, 2024
Dr. Korytowsky's Medicare patients by sex, 2024
- Women15243%
- Men19857%
Chronic conditions among Dr. Korytowsky's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Ischemic heart disease39%
- Diabetes28%
- COPD25%
- Heart failure22%
- Chronic kidney disease21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Korytowsky'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
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Walter Gregory Korytowsky wrote 477 Medicare Part D claims in 2024
In 2024, Dr. Korytowsky wrote 477 Medicare Part D claims for 219 patients. 91% of them were for generic drugs. CMS names the drug for 379 of them, across 10 drugs with 11 or more claims each, at $111,734 in total drug cost. In 2023, CMS named 363 claims across 10 drugs.
Dr. Korytowsky's Part D claims by kind of drug, 2024
- Generic432 claims91%
- Brand-name45 claims9%
Dr. Korytowsky'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. Korytowsky's Part D claims, 2024
- Antibiotics17%83 of 477 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: 3632024: 3794%
Drugs named by CMS: 10 in 2024, 10 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. Walter Gregory Korytowsky ranks in the 77th percentile for removal of skin lesions in Medicare
Dr. Korytowsky accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 136 procedures of removal of skin lesions by Dr. Korytowsky, more than 77% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Korytowsky ranks in Medicare procedure volume
- Removal of skin lesions
- 77th percentile136 procedures
- Skin biopsy
- 74th percentile86 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Walter Gregory Korytowsky received $42 in industry payments from 2023 to 2025
CMS Open Payments shows 2 general payments to Dr. Korytowsky from 2 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $23.
General payments to Dr. Korytowsky by program year, 2023 to 2025
Companies that paid Dr. Korytowsky the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Walter Gregory Korytowsky graduated from University of Michigan Medical School
Dr. Korytowsky graduated from University of Michigan Medical School in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Walter Gregory Korytowsky'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Doctors and Clinicians Utilization Data (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. Walter Gregory Korytowsky
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. Walter Gregory Korytowsky's NPI number?
Dr. Walter Gregory Korytowsky's NPI number is 1043325632. It was assigned on August 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Walter Gregory Korytowsky?
Dr. Walter Gregory Korytowsky is a dermatologist in Battle Creek, Michigan. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. Walter Gregory Korytowsky practice?
Dr. Korytowsky practices at 7070 E N Dr, Battle Creek, MI 49014. Dr. Korytowsky's primary practice is Dermatology & Skin Surgery Center in Battle Creek, Michigan. Dmand AI also links Dr. Korytowsky to 1 group practice or clinic.
What is Dr. Walter Gregory Korytowsky's office phone number?
The practice phone on file for Dr. Korytowsky is (269) 660-1670.
What is Dr. Walter Gregory Korytowsky's medical license number?
Dr. Korytowsky holds Michigan license 4301040841.
Which hospitals is Dr. Walter Gregory Korytowsky affiliated with?
Dr. Korytowsky is affiliated with Hillsdale Hospital.
What medical group is Dr. Walter Gregory Korytowsky part of?
Dr. Korytowsky is linked to Dermatology & Skin Surgery Center.
Does Dr. Walter Gregory Korytowsky accept Medicare?
Yes. CMS data shows Dr. Korytowsky billed Medicare for 974 services in 2024, and Dr. Korytowsky accepts Medicare assignment.
How many Medicare patients does Dr. Walter Gregory Korytowsky see?
CMS counts 350 Medicare patients who saw Dr. Korytowsky in 2024, with an average age of 76.
What services does Dr. Walter Gregory Korytowsky bill to Medicare?
In 2024, Dr. Korytowsky's most billed Medicare services were office visit, established patient (99213), surgery: skin and soft tissue (17003) and surgery: skin and soft tissue (17000).
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Where did Dr. Walter Gregory Korytowsky go to medical school?
Dr. Korytowsky graduated from University of Michigan Medical School in 1977.
What drugs does Dr. Walter Gregory Korytowsky prescribe most?
In 2024 Medicare Part D data, Dr. Korytowsky's most prescribed drugs by claims were Clobetasol Propionate, Triamcinolone Acetonide and Doxycycline Hyclate.
Has Dr. Walter Gregory Korytowsky received payments from drug or device companies?
CMS Open Payments shows $42 in general payments to Dr. Korytowsky from 2 companies from 2023 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Walter Gregory Korytowsky been practicing?
Dr. Korytowsky graduated from medical school in 1977, 49 years ago.
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