Mark J. Fritz, M.D.
Ophthalmology Physician · Joliet, IL
Mark J. Fritz, M.D. is an ophthalmology physician with a practice address in Joliet, Illinois, and NPI 1669509550, issued on Feb 27, 2007. Check the license (Illinois 036099618, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mark J. Fritz
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 036099618 IL
Self-reported in NPPES; status is on the state search - Practice location
- 212 N Larkin Ave, Joliet, IL 60435
- Phone
- (815) 741-0666
- Enumerated
- Feb 27, 2007
- Record last updated
- Jun 24, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (815) 741-0649
- Medicaid ID
- 036099618 IL
- Medicare enrollment
- Enrolled (PECOS I20100610001134); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1995
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 898 in Illinois → Look up another NPI →
Verify Mark J. Fritz 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 036099618Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% more Medicare Part D claims than the average ophthalmology physician in 2024
1,844 Medicare Part D claims for 417 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Latanoprost600 claims
- Dorzolamide-Timolol238 claims
- Prednisolone Acetate217 claims
- Erythromycin169 claims
- Ketorolac Tromethamine148 claims
- Ofloxacin138 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Mark J. Fritz among 898 ophthalmology physician records in Illinois
Mark J. Fritz, M.D. is one of 898 ophthalmology physician records with a practice address in Illinois. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 56% of them.
- NPI issued2007 · 56% of these records are older, 36% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1995 · median 1999 among the 551 with a school on file
- Record last updated2008 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Illinois
There are 898 ophthalmology physician records in Illinois.
All 898 in Illinois → Every provider in Joliet → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Tayaba Azher, MDJoliet, IL 604351386140481
- Samra Hashmi, MDJoliet, IL 604351790732147
- Eligijus Lelis, MDJoliet, IL 604351043264252
- David Morimoto, M.D.Joliet, IL 604351356305643
- Majid Rassouli, DOJoliet, IL 604351891749081
- Gaurav Singh, MDJoliet, IL 604351598908675
- Alexis Stefaniak-Clark, MDJoliet, IL 604351760131072
- Allison Murchison, M.D.Lemont, IL 604391083699573
Common questions
What is Mark J. Fritz, M.D.'s NPI number?
Mark J. Fritz, M.D.'s National Provider Identifier (NPI) is 1669509550, issued on Feb 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark J. Fritz, M.D. located?
The NPPES record lists a practice address at 212 N Larkin Ave, Joliet, IL, 60435. Phone: (815) 741-0666. Providers update this record themselves, so call before visiting.
How can I verify Mark J. Fritz, M.D.'s license?
NPPES lists Illinois license number 036099618, 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 J. Fritz, M.D. prescribe under Medicare Part D?
In 2024, Mark J. Fritz, M.D. had 1,844 Medicare Part D claims for 417 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Mark J. Fritz, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.