Charles Ronan, OD
NPI 1639696057 · Optometrist · Tahlequah, OK
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Ronan, OD is a Optometrist provider in Tahlequah, OK (NPI 1639696057).
Provider details
- NPI number
- 1639696057
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- 2950 (OK)
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
8 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
2,243 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 414 | $153 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 410 | $15 |
| Imaging of Retina92134 | 397 | $35 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 260 | $83 |
| Removal of Recurring Cataract in Lens Capsule Using a Laser66821 | 216 | $269 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 171 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketorolac Tromethamine | 680 | 479 |
| Prednisolone Acetate | 606 | 388 |
| Ciprofloxacin Hcl | 519 | 334 |
| Latanoprost | 103 | 25 |
| Brimonidine Tartrate | 59 | 37 |
| Valacyclovir Hclbrand: Valacyclovir | 43 | 15 |
| Erythromycin Basebrand: Erythromycin | 40 | 26 |
| Moxifloxacin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,591 across 36 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
- 2017-08-25
- Last updated
- 2017-08-30
Frequently asked questions
- What is Charles Ronan's NPI number?
- Charles Ronan's National Provider Identifier (NPI) is 1639696057, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Ronan's specialty?
- Charles Ronan is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Charles Ronan located?
- Charles Ronan's practice location on file with NPPES is 1001 N Grand Ave, Tahlequah, OK 74464-7017.
- What is Charles Ronan's phone number?
- The practice phone number listed in the NPPES registry for Charles Ronan is (918) 444-2109.
- Does Charles Ronan accept Medicare?
- Charles Ronan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Ronan's NPI active?
- Yes — Charles Ronan's NPI (1639696057) is active in the NPPES registry as of the last update on 2017-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.