Michael De Guzman
NPI 1003278862 · Ophthalmology Physician · Charleston, SC
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael De Guzman is a Ophthalmology Physician provider in Charleston, SC (NPI 1003278862).
Provider details
- NPI number
- 1003278862
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,700 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 470 | $89 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 444 | $124 |
| Exam of Visual Field With Extended Testing92083 | 411 | $62 |
| Established Patient Complete Exam of Visual System92014 | 393 | $121 |
| Imaging of Optic Nerve92133 | 364 | $33 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 333 | $38 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,224 | 281 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 440 | 110 |
| Timolol Maleate | 259 | 87 |
| Brimonidine Tartrate | 186 | 58 |
| Prednisolone Acetate | 157 | 104 |
| Moxifloxacin Hclbrand: Moxifloxacin | 101 | 74 |
| Ketorolac Tromethamine | 88 | 58 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,440 across 46 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
- 2016-03-22
- Last updated
- 2021-12-07
- Certified
- 2021-12-07
Frequently asked questions
- What is Michael De Guzman's NPI number?
- Michael De Guzman's National Provider Identifier (NPI) is 1003278862, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael De Guzman's specialty?
- Michael De Guzman is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael De Guzman located?
- Michael De Guzman's practice location on file with NPPES is 171 Ashley Ave, Charleston, SC 29425-4423.
- What is Michael De Guzman's phone number?
- The practice phone number listed in the NPPES registry for Michael De Guzman is (843) 792-1414.
- Does Michael De Guzman accept Medicare?
- Michael De Guzman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael De Guzman's NPI active?
- Yes — Michael De Guzman's NPI (1003278862) is active in the NPPES registry as of the last update on 2021-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.