Mark Alan Altfillisch, OD
Optometrist · Ottumwa, IA
Mark Alan Altfillisch, OD is an optometrist with a practice address in Ottumwa, Iowa, and NPI 1093814014, issued on Sep 22, 2006. Check the license (Iowa 1969, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Alan Altfillisch
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 1969 IA
Self-reported in NPPES; status is on the state search - Practice location
- 224 E Main Street, Ottumwa, IA 52501
- Phone
- (641) 684-5463
- Enumerated
- Sep 22, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (641) 684-5475
- Medicaid ID
- 0089839 IA
- Medicare enrollment
- Enrolled (PECOS I20111227000423); accepts Medicare assignment
- Medical or professional school
- Southern College Of Optometry, 1992
- Entity
- Type 1 · individual
8 nearest optometrist records → All 676 in Iowa → Look up another NPI →
Also registered at 224 E Main Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Altfillisch, ODOptometrist1154420172
Verify Mark Alan Altfillisch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license 1969Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average optometrist in 2024
599 Medicare Part D claims for 136 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Latanoprost254 claims
- Timolol Maleate40 claims
- Lumigan37 claims
- Brimonidine Tartrate28 claims
- Ofloxacin23 claims
- Bimatoprost21 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): 89.4 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).
Mark Alan Altfillisch among 676 optometrist records in Iowa
Mark Alan Altfillisch, OD is one of 676 optometrist records with a practice address in Iowa. 76% 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 18% of them.
- NPI issued2006 · 18% of these records are older, 44% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1992 · median 2006 among the 462 with a school on file
- Record last updated2007 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 optometrist records list a practice address in Ottumwa
They are 5 of the 405 NPPES records with a practice address in Ottumwa, and 676 optometrist records in Iowa.
All 676 in Iowa → Every provider in Ottumwa → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- John Altfillisch, ODOttumwa, IA 525011154420172
- Jeffrey Collett, O.D.Ottumwa, IA 525011912909516
- Robert Moreland, O.D.Ottumwa, IA 525011740282243
- Chet Schlatter, O.D.Ottumwa, IA 525011760790430
- Daniel Alletto, ODCenterville, IA 525441043668700
- Thomas Johnson, O.D.Centerville, IA 525441053363390
- Nicholas McCullen, O.D.Centerville, IA 525441376854745
- Kreg Harper, O.D.Fairfield, IA 525561720095292
Common questions
What is Mark Alan Altfillisch, OD's NPI number?
Mark Alan Altfillisch, OD's National Provider Identifier (NPI) is 1093814014, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Alan Altfillisch, OD located?
The NPPES record lists a practice address at 224 E Main Street, Ottumwa, IA, 52501. Phone: (641) 684-5463. Providers update this record themselves, so call before visiting.
How can I verify Mark Alan Altfillisch, OD's license?
NPPES lists Iowa license number 1969, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Alan Altfillisch, OD prescribe under Medicare Part D?
In 2024, Mark Alan Altfillisch, OD had 599 Medicare Part D claims for 136 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is Mark Alan Altfillisch, OD's MIPS final score?
The 2023 MIPS final score is 89.4 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.