Joy Carroll, M.D.
NPI 1649699141 · Ophthalmology Physician · Ames, IA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joy Carroll, M.D. is a Ophthalmology Physician provider in Ames, IA (NPI 1649699141).
Provider details
- NPI number
- 1649699141
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- 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
12 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
2,304 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 Complete Exam of Visual System92014 | 379 | $116 |
| Imaging of Optic Nerve92133 | 252 | $32 |
| Imaging of Retina92134 | 232 | $37 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 214 | $118 |
| Exam of Visual Field With Extended Testing92083 | 194 | $57 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 185 | $38 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
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 |
|---|---|---|
| Latanoprost | 309 | 77 |
| Moxifloxacin Hclbrand: Moxifloxacin | 262 | 163 |
| Prednisolone Acetate | 250 | 160 |
| Ketorolac Tromethamine | 200 | 125 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 82 | 23 |
| Cyclosporinebrand: Restasis | 61 | 21 |
| Brimonidine Tartrate | 39 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 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
- 2014-04-11
- Last updated
- 2020-10-27
- Certified
- 2020-10-27
Frequently asked questions
- What is Joy Carroll's NPI number?
- Joy Carroll's National Provider Identifier (NPI) is 1649699141, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joy Carroll's specialty?
- Joy Carroll is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Joy Carroll located?
- Joy Carroll's practice location on file with NPPES is 1128 Duff Avenue, Ames, IA 50010.
- What is Joy Carroll's phone number?
- The practice phone number listed in the NPPES registry for Joy Carroll is (515) 239-4460.
- Does Joy Carroll accept Medicare?
- Joy Carroll is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joy Carroll's NPI active?
- Yes — Joy Carroll's NPI (1649699141) is active in the NPPES registry as of the last update on 2020-10-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.