Walter Gregory Korytowsky, M.D.
Dermatology Physician · Jackson, MI
Walter Gregory Korytowsky, M.D. is a dermatology physician with a practice address in Jackson, Michigan, and NPI 1043325632, issued on Aug 21, 2006. Check the license (Michigan 4301040841, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Walter Gregory Korytowsky
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 4301040841 MI
Self-reported in NPPES; status is on the state search - Practice location
- 3333 Spring Arbor RD, Jackson, MI 49203
- Phone
- (517) 783-6435
- Enumerated
- Aug 21, 2006
- Record last updated
- Oct 11, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (517) 783-6347
- Medicaid ID
- 1570689 MI
- Medicare enrollment
- Enrolled (PECOS I20050722000630); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 1977
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 471 in Michigan → Look up another NPI →
Also registered at 3333 Spring Arbor RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cheryl Bassett, MSWClinical Social Worker1124011192
- Karen Harrison, LMSW ACSWClinical Social Worker1265424535
- Megan Hudson, PHD LPClinical Psychologist1013900901
- Patricia Lafave, PHDPsychologist1902899974
- Patricia Lamb, MDInternal Medicine Physician1194851865
- Judy McNish, MSW BSWClinical Social Worker1972595239
Verify Walter Gregory Korytowsky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301040841Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average dermatology physician in 2024
477 Medicare Part D claims for 219 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Clobetasol Propionate91 claims
- Triamcinolone Acetonide86 claims
- Doxycycline Hyclate54 claims
- Fluorouracil31 claims
- Ketoconazole27 claims
- Hydrocortisone25 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Dermatology And Skin Surgery CenterBattle Creek, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Walter Gregory Korytowsky among 471 dermatology physician records in Michigan
Walter Gregory Korytowsky, M.D. is one of 471 dermatology physician records with a practice address in Michigan. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1977 · median 2008 among the 324 with a school on file
- Record last updated2011 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in Michigan
There are 471 dermatology physician records in Michigan.
All 471 in Michigan → Every provider in Jackson → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Elizabeth Gordon Spratt, M.D.Jackson, MI 492031871814095
- Lawrence Desjarlais, MDAdrian, MI 492211437116852
- Benjamin Nykamp, MDAda, MI 493011700984390
- Kristi Hawley, D.OCaledonia, MI 493161821350745
- Cailey Rooker, PA-CSaint Joseph, MI 490851609699123
- Riddhi Shah, D.O.Saint Joseph, MI 490851568504397
- Brittany Valk, DOSaint Joseph, MI 490851700445525
- Bridget Green, M.D,Rockford, MI 493411356542500
Common questions
What is Walter Gregory Korytowsky, M.D.'s NPI number?
Walter Gregory Korytowsky, M.D.'s National Provider Identifier (NPI) is 1043325632, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Walter Gregory Korytowsky, M.D. located?
The NPPES record lists a practice address at 3333 Spring Arbor RD, Jackson, MI, 49203. Phone: (517) 783-6435. Providers update this record themselves, so call before visiting.
How can I verify Walter Gregory Korytowsky, M.D.'s license?
NPPES lists Michigan license number 4301040841, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Walter Gregory Korytowsky, M.D. prescribe under Medicare Part D?
In 2024, Walter Gregory Korytowsky, M.D. had 477 Medicare Part D claims for 219 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.