Mary Kathryn P F Zak, O.D.
Optometrist · Martinsville, VA
Mary Kathryn P F Zak, O.D. is an optometrist with a practice address in Martinsville, Virginia, and NPI 1821543836, issued on Aug 19, 2016. Check the license (Virginia 0618002526, as entered in NPPES) with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Kathryn P F Zak
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 0618002526 VA
Self-reported in NPPES; status is on the state search - Practice location
- 1975 Virginia Ave, Martinsville, VA 24112
- Phone
- (276) 647-3937
- Enumerated
- Aug 19, 2016
- Record last updated
- Aug 19, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161101001395); accepts Medicare assignment
- Medical or professional school
- Indiana University - School Of Optometry, 2016
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,460 in Virginia → Look up another NPI →
Also registered at 1975 Virginia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- G. Butterworth, ODCorneal and Contact Management Optometrist1114928934
- Jill Christian-Friedrichs, O.D.Optometrist1093800781
- Michael Ford, O.D.Optometrist1922008952
- Gray Friedrichs, O.D.Optometrist1174526008
- Michael Jennings, ODOptometrist1104410927
- Casey Ramirez Cortes, ODOptometrist1609440502
Verify Mary Kathryn P F Zak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this profession
Search for license 0618002526Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average optometrist in 2024
689 Medicare Part D claims for 216 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Latanoprost313 claims
- Neomycin-Polymyxin-Dexameth82 claims
- Timolol Maleate54 claims
- Dorzolamide-Timolol42 claims
- Tobramycin-Dexamethasone36 claims
- Restasis19 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.
Industry payments in 2024: $90.73
2 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 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.
Bills Medicare through one group practice
- Friedrichs Family Eye Center PCMartinsville, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Kathryn P F Zak among 1,460 optometrist records in Virginia
Mary Kathryn P F Zak, O.D. is one of 1,460 optometrist records with a practice address in Virginia. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 74% of them.
- NPI issued2016 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2016 · median 2007 among the 885 with a school on file
- Record last updated2016 · 64% 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 Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 optometrist records list a practice address in Martinsville
They are 9 of the 499 NPPES records with a practice address in Martinsville, and 1,460 optometrist records in Virginia.
All 1,460 in Virginia → Every provider in Martinsville → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Theresa Bechtel, ODMartinsville, VA 241121932291416
- Jill Christian-Friedrichs, O.D.Martinsville, VA 241121093800781
- Douglas Christman, O.D.Martinsville, VA 241121588776785
- Morgan ClemonsMartinsville, VA 241121336034883
- Michael Ford, O.D.Martinsville, VA 241121922008952
- Gray Friedrichs, O.D.Martinsville, VA 241121174526008
- Michael Jennings, ODMartinsville, VA 241121104410927
- Casey Ramirez Cortes, ODMartinsville, VA 241121609440502
Common questions
What is Mary Kathryn P F Zak, O.D.'s NPI number?
Mary Kathryn P F Zak, O.D.'s National Provider Identifier (NPI) is 1821543836, issued on Aug 19, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Mary Kathryn P F Zak, O.D. located?
The NPPES record lists a practice address at 1975 Virginia Ave, Martinsville, VA, 24112. Phone: (276) 647-3937. Providers update this record themselves, so call before visiting.
How can I verify Mary Kathryn P F Zak, O.D.'s license?
NPPES lists Virginia license number 0618002526, as entered by the provider. Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Kathryn P F Zak, O.D. prescribe under Medicare Part D?
In 2024, Mary Kathryn P F Zak, O.D. had 689 Medicare Part D claims for 216 beneficiaries; the average among optometrist prescribers was 277. 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.