Dr. Patricia Sierra, MD
What this data tells you about Dr. Sierra
Dr. Patricia Sierra is an ophthalmology specialist in Sacramento, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Sierra performed 2,344 Medicare services across 1,896 unique beneficiaries.
Between the years covered by Open Payments, Dr. Sierra received a total of $16,309 from 35 pharmaceutical and/or device companies across 159 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in ophthalmology. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Sierra is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Corneal topography and eye depth measurement This procedure measures the curvature and depth of the cornea, the clear front surface of the eye. |
402 | $33 | $191 |
| Eye exam, established patient, focused A limited examination of the visual system for an existing patient. The provider focuses on a specific eye-related concern or symptom. |
352 | $65 | $263 |
| Cataract surgery with lens implant Surgical removal of the clouded natural lens of the eye and replacement with an artificial prosthetic lens to restore vision. |
287 | $414 | $1,708 |
| Comprehensive eye exam, established patient A comprehensive examination of the visual system performed for a patient who has previously been seen by the provider. |
252 | $83 | $370 |
| Comprehensive eye exam, new patient A comprehensive examination of the visual system performed for a new patient. |
248 | $112 | $440 |
| Retinal imaging (OCT scan) This procedure involves imaging the retina to visualize its structure. It is used to examine the back of the eye. |
233 | $31 | $120 |
| CT scan of cornea A computed tomography scan used to create detailed images of the cornea, the clear front part of the eye. |
163 | $27 | $108 |
| Ultrasound scan of cornea to determine thickness An ultrasound procedure used to measure the thickness of the cornea. |
98 | $9 | $34 |
| Laser removal of recurring cataract A laser procedure to remove a recurring cataract within the lens capsule. |
78 | $280 | $1,000 |
| Optic nerve imaging (OCT scan) Imaging of the optic nerve. |
53 | $24 | $108 |
| Visual field test, intermediate A test that measures your side vision to check for blind spots or other vision changes. |
33 | $37 | $139 |
| Slit lamp examination of the eye This procedure uses a specialized microscope to examine the front portion of the eye. |
32 | $32 | $250 |
| Tear duct plug insertion A procedure to insert a small plug into the tear duct opening to help retain tears on the eye surface. |
26 | $106 | $439 |
| Cataract removal with artificial lens and drainage device insertion Surgical removal of the eye's natural lens followed by the insertion of an artificial lens and a drainage device into the front chamber of the eye. |
25 | $549 | $1,784 |
| New patient eye exam, problem focused A focused examination of the visual system performed during a new patient visit. |
22 | $68 | $253 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
21 | $116 | $439 |
| Visual field test, extended A test that maps your complete field of vision to detect blind spots or peripheral vision loss. Extended testing provides a more detailed assessment than a standard visual field exam. |
19 | $49 | $186 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
The majority of payments (51%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Sierra is a mixed practice specialist, with moderate Medicare volume, with consulting-driven industry engagement in the top 11% of CA peers, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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