Mark Szal, MD
NPI 1588665475 · Ophthalmology Physician · Concord, NH
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Szal, MD is a Ophthalmology Physician provider in Concord, NH (NPI 1588665475).
Provider details
- NPI number
- 1588665475
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 10668 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
4,670 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) |
|---|---|---|
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 1,195 | $112 |
| Established Patient Complete Exam of Visual System92014 | 1,060 | $121 |
| Imaging of Optic Nerve92133 | 369 | $33 |
| Exam of Visual Field With Extended Testing92083 | 325 | $61 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 323 | $123 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 260 | $38 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 534 | 406 |
| Latanoprost | 467 | 148 |
| Ofloxacin | 435 | 302 |
| Bromfenac Sodiumbrand: Prolensa | 229 | 169 |
| Timolol Maleate | 125 | 38 |
| Bromfenac Sodium | 62 | 48 |
| Brimonidine Tartrate | 37 | 11 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$39 across 2 records (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
- 2005-08-02
- Last updated
- 2020-04-21
- Certified
- 2020-04-21
Frequently asked questions
- What is Mark Szal's NPI number?
- Mark Szal's National Provider Identifier (NPI) is 1588665475, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Szal's specialty?
- Mark Szal is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Szal located?
- Mark Szal's practice location on file with NPPES is 248 Pleasant St, Concord, NH 03301-2588.
- What is Mark Szal's phone number?
- The practice phone number listed in the NPPES registry for Mark Szal is (603) 224-2020.
- Does Mark Szal accept Medicare?
- Mark Szal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Szal's NPI active?
- Yes — Mark Szal's NPI (1588665475) is active in the NPPES registry as of the last update on 2020-04-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.