Ann Quan, M.D.
NPI 1871956581 · Ophthalmology Physician · Oceanside, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Quan, M.D. is a Ophthalmology Physician provider in Oceanside, CA (NPI 1871956581).
Provider details
- NPI number
- 1871956581
- 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
Allopathic & Osteopathic Physicians
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
6,492 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,603 | $137 |
| Imaging of Optic Nerve92133 | 1,092 | $39 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 939 | $17 |
| Exam of Visual Field With Extended Testing92083 | 849 | $71 |
| Exam of the Internal Drainage System of Eye92020 | 468 | $30 |
| Ultrasound Scan of Cornea to Determine Thickness76514 | 266 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,698 | 384 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 637 | 202 |
| Timolol Maleate | 434 | 152 |
| Brimonidine Tartrate | 333 | 92 |
| Prednisolone Acetate | 269 | 123 |
| Latanoprostene Bunodbrand: Vyzulta | 197 | 52 |
| Dorzolamide/Timolol/Pfbrand: Dorzolamide-Timolol | 195 | 70 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,562 across 93 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
Additional practice locations (1)
- 900 Nw 17th StMiami, FL 33136-1119Phone: (305) 243-2020
Registry dates
- Enumerated
- 2016-03-30
- Last updated
- 2021-09-28
- Certified
- 2021-09-10
Frequently asked questions
- What is Ann Quan's NPI number?
- Ann Quan's National Provider Identifier (NPI) is 1871956581, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Quan's specialty?
- Ann Quan is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Quan located?
- Ann Quan's practice location on file with NPPES is 2205 Vista Way # 330, Oceanside, CA 92054-5661.
- What is Ann Quan's phone number?
- The practice phone number listed in the NPPES registry for Ann Quan is (760) 704-5600.
- Does Ann Quan accept Medicare?
- Ann Quan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Quan's NPI active?
- Yes — Ann Quan's NPI (1871956581) is active in the NPPES registry as of the last update on 2021-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.