Mark Louis Westphal, MD
Dermatology Physician · Carbondale, IL
Mark Louis Westphal, MD is a dermatology physician with a practice address in Carbondale, Illinois, and NPI 1043388242, issued on Dec 4, 2006. Check the license (Illinois 036055065, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mark Louis Westphal
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 036055065 IL
Self-reported in NPPES; status is on the state search - Practice location
- 665 E Lake RD, Carbondale, IL 62901
- Phone
- (618) 549-0841
- Enumerated
- Dec 4, 2006
- Record last updated
- Feb 5, 2024
- Fax
- (618) 529-2442
- Medicare enrollment
- Enrolled (PECOS I20031113000438); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1973
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 647 in Illinois → Look up another NPI →
Also registered at 665 E Lake RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelly Hand, PAPhysician Assistant1851502421
Verify Mark Louis Westphal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036055065Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average dermatology physician in 2024
353 Medicare Part D claims for 151 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Triamcinolone Acetonide72 claims
- Cephalexin40 claims
- Clobetasol Propionate30 claims
- Ketoconazole30 claims
- Minoxidil15 claims
- Sulfamethoxazole-Trimethoprim13 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.
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $141.11
4 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mark Louis Westphal among 647 dermatology physician records in Illinois
Mark Louis Westphal, MD is one of 647 dermatology physician records with a practice address in Illinois. 85% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 65% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1973 · median 2008 among the 440 with a school on file
- Record last updated2024 · 47% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in Illinois
There are 647 dermatology physician records in Illinois.
All 647 in Illinois → Every provider in Carbondale → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Anup Chaudhry, M.D.Carbondale, IL 629011700843570
- Susan Schaberg, M.D.Carbondale, IL 629011609844927
- Hal Lewis, M.D.Carbondale, IL 629021124554209
- Derek Kenneaster, MDHerrin, IL 629481457372724
- Ted Van Acker, D.O.Herrin, IL 629481720025562
- Ashley Egler, MDSpringfield, IL 627941851138028
- Larry Newell, MDSpringfield, IL 627041942386677
- Brittany Sweet, MDSpringfield, IL 627041235662586
Common questions
What is Mark Louis Westphal, MD's NPI number?
Mark Louis Westphal, MD's National Provider Identifier (NPI) is 1043388242, issued on Dec 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Louis Westphal, MD located?
The NPPES record lists a practice address at 665 E Lake RD, Carbondale, IL, 62901. Phone: (618) 549-0841. Providers update this record themselves, so call before visiting.
How can I verify Mark Louis Westphal, MD's license?
NPPES lists Illinois license number 036055065, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Louis Westphal, MD prescribe under Medicare Part D?
In 2024, Mark Louis Westphal, MD had 353 Medicare Part D claims for 151 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Mark Louis Westphal, MD's MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.