Ann Warn, M.D.
NPI 1316916794 · Ophthalmology Physician · Lawton, OK
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Warn, M.D. is a Ophthalmology Physician provider in Lawton, OK (NPI 1316916794).
Provider details
- NPI number
- 1316916794
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 17787 (OK)
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
3,385 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 | 847 | $115 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 440 | $119 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 396 | $84 |
| Imaging of Retina92134 | 333 | $36 |
| Exam of Visual Field With Extended Testing92083 | 303 | $57 |
| Imaging of Optic Nerve92133 | 287 | $31 |
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 |
|---|---|---|
| Latanoprost | 519 | 132 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 255 | 65 |
| Timolol Maleate | 158 | 42 |
| Prednisolone Acetate | 113 | 79 |
| Dorzolamide Hcl | 65 | 15 |
| Brimonidine Tartrate | 54 | 19 |
| Travoprost | 34 | — |
| Brimonidine Tartratebrand: Alphagan P |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 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
- 2006-03-16
- Last updated
- 2020-08-04
- Certified
- 2020-08-04
Frequently asked questions
- What is Ann Warn's NPI number?
- Ann Warn's National Provider Identifier (NPI) is 1316916794, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Warn's specialty?
- Ann Warn is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Warn located?
- Ann Warn's practice location on file with NPPES is 3201 W Gore Blvd, Lawton, OK 73505-6378.
- What is Ann Warn's phone number?
- The practice phone number listed in the NPPES registry for Ann Warn is (580) 250-5855.
- Does Ann Warn accept Medicare?
- Ann Warn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Warn's NPI active?
- Yes — Ann Warn's NPI (1316916794) is active in the NPPES registry as of the last update on 2020-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.