G Perrin Underwood, MD
NPI 1780769927 · Ophthalmology Physician · Montgomery, AL
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
G Perrin Underwood, MD is a Ophthalmology Physician provider in Montgomery, AL (NPI 1780769927).
Provider details
- NPI number
- 1780769927
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 00011798 (AL)
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
19 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
388 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 137 | $161 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 118 | $115 |
| Imaging of Optic Nerve92133 | 53 | $32 |
| Exam of Visual Field With Extended Testing92083 | 27 | $56 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 23 | $194 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,497 | 292 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 345 | 86 |
| Prednisolone Acetate | 235 | 94 |
| Ketorolac Tromethamine | 147 | 89 |
| Brimonidine Tartrate | 114 | 28 |
| Netarsudil Mesylat/Latanoprostbrand: Rocklatan | 107 | 26 |
| Polymyxin B Sulf/Trimethoprimbrand: Polymyxin B Sul-Trimethoprim | 93 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$220 across 4 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
- 2006-10-26
- Last updated
- 2009-06-19
Frequently asked questions
- What is G Perrin Underwood's NPI number?
- G Perrin Underwood's National Provider Identifier (NPI) is 1780769927, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is G Perrin Underwood's specialty?
- G Perrin Underwood is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is G Perrin Underwood located?
- G Perrin Underwood's practice location on file with NPPES is 2055 Normandie Dr, Montgomery, AL 36111-2732.
- What is G Perrin Underwood's phone number?
- The practice phone number listed in the NPPES registry for G Perrin Underwood is (334) 284-4106.
- Does G Perrin Underwood accept Medicare?
- G Perrin Underwood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is G Perrin Underwood's NPI active?
- Yes — G Perrin Underwood's NPI (1780769927) is active in the NPPES registry as of the last update on 2009-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.