Mark Turk, O.D.
NPI 1689645764 · Optometrist · Boaz, AL
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Turk, O.D. is a Optometrist provider in Boaz, AL (NPI 1689645764).
Provider details
- NPI number
- 1689645764
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- S-861-TA-420 (AL)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
541 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 144 | $111 |
| Photography of the Retina92250 | 128 | $31 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 77 | $48 |
| Evaluation of Eye Adaptation to Light and Dark With Interpretation and Report92284 | 46 | $30 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 38 | $78 |
| Exam of Visual Field With Extended Testing92083 | 36 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 125 | 41 |
| Bimatoprostbrand: Lumigan | 48 | — |
| Cyclosporinebrand: Restasis | 35 | 11 |
| Timolol Maleate | 32 | — |
| Cyclosporine | 29 | 12 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 20 | — |
| Brimonidine Tartrate | 19 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$55 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-27
- Last updated
- 2008-06-05
Frequently asked questions
- What is Mark Turk's NPI number?
- Mark Turk's National Provider Identifier (NPI) is 1689645764, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Turk's specialty?
- Mark Turk is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Mark Turk located?
- Mark Turk's practice location on file with NPPES is 2378 US Highway 431, Boaz, AL 35957-5905.
- What is Mark Turk's phone number?
- The practice phone number listed in the NPPES registry for Mark Turk is (256) 593-4141.
- Does Mark Turk accept Medicare?
- Mark Turk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Turk's NPI active?
- Yes — Mark Turk's NPI (1689645764) is active in the NPPES registry as of the last update on 2008-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.