Medicare Enrolled
Dr. Michael Guerena, MD
Optician · Oceanside, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Guerena from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Guerena
Dr. Michael Guerena is an optician specialist in Oceanside, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Guerena performed 2,996 Medicare services across 1,818 unique beneficiaries.
Between the years covered by Open Payments, Dr. Guerena received a total of $13,198 from 67 pharmaceutical and/or device companies across 566 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in optician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Guerena 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.
✓ 19 years in practice
▲ Top 28% volume in CA
$13,198 industry payments
Medicare Practice Summary
Medicare Utilization ↗2,996
Medicare services
Top 28% in CA for optician
1,818
Unique beneficiaries
$74
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~158 Medicare services per year of practice
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 |
|---|---|---|---|
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
923 | $74 | $125 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
636 | $96 | $150 |
| Complete pelvic ultrasound An imaging test using sound waves to create pictures of the organs and structures within the pelvis. |
335 | $82 | $150 |
| Manual urinalysis with microscopic examination A urine test performed manually without automated equipment. The sample is examined under a microscope to check for abnormalities. |
309 | $4 | $10 |
| Functional capacity test, per 15 minutes A test or measurement to assess functional capacity. The service is billed for each 15-minute increment. |
146 | $25 | $76 |
| Limited ultrasound of pelvis A focused ultrasound exam of the pelvic area to evaluate specific structures. This procedure provides images of the pelvis to assist in medical assessment. |
126 | $43 | $80 |
| Cystourethroscopy A diagnostic exam of the bladder and urethra using an endoscope to visually inspect the urinary tract. |
99 | $205 | $301 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
97 | $89 | $154 |
| Lower leg neurostimulator electrode insertion A procedure to place an electrode in the lower leg for neurostimulation therapy. |
81 | $104 | $150 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
61 | $12 | $35 |
| Simple insertion of temporary bladder tube A procedure to place a temporary tube into the bladder. This allows for the drainage of urine from the bladder. |
45 | $50 | $77 |
| 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. |
42 | $121 | $201 |
| Bladder ultrasound after voiding An ultrasound scan performed after urination to measure the amount of urine remaining in the bladder. |
23 | $10 | $50 |
| Transrectal ultrasound of the pelvis An ultrasound imaging procedure where a probe is inserted into the rectum to visualize pelvic structures. |
21 | $124 | $177 |
| Injection of implant material into bladder or urethra A procedure where implant material is injected beneath the lining of the bladder and/or urethra using an endoscope. |
20 | $161 | $278 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
20 | $143 | $275 |
| Imaging of urinary tract with contrast An imaging test of the urinary tract performed after a contrast agent is injected to enhance visibility of the structures. |
12 | $20 | $35 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
Industry Payment Transparency
Open Payments through 2024 ↗$13,198
Total received (2018-2024)
Avg $1,885/year across 7 years
Top 11% in CA for optician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
67
Companies
566
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$11,327 (85.8%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$1,871 (14.2%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,350
2023
$3,049
2022
$2,007
2021
$2,114
2020
$1,307
2019
$1,463
2018
$908
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Dendreon Pharmaceuticals LLC
$337
Janssen Biotech, Inc.
$252
ABBVIE INC.
$176
PROCEPT BioRobotics Corporation
$162
IMMUNITYBIO, INC.
$133
BIOTISSUE HOLDINGS INC.
$130
Sumitomo Pharma America, Inc.
$123
Olympus America Inc.
$116
Astellas Pharma US Inc
$95
Myriad Genetic Laboratories, Inc.
$92
Boston Scientific Corporation
$85
UROGEN PHARMA, INC.
$72
Teleflex LLC
$57
Bayer Healthcare Pharmaceuticals Inc.
$56
Blue Earth Diagnostics Limited
$54
PROGENICS PHARMACEUTICALS, INC.
$52
Axonics, Inc.
$45
Telix Pharmaceuticals
$43
PFIZER INC.
$39
Novartis Pharmaceuticals Corporation
$32
Tempus AI, Inc
$25
AstraZeneca Pharmaceuticals LP
$25
Endo USA, Inc.
$24
ACCORD HEALTHCARE, INC.
$24
C. R. Bard, Inc. & Subsidiaries
$23
Endo Pharmaceuticals Inc.
$20
COLOPLAST CORP
$19
Ethicon US, LLC
$19
Provepharm Inc.
$17
Top 3 companies account for 32.6% of 2024 payments
All-time payments by company (2018-2024) ›
Astellas Pharma US Inc
$1,994
Janssen Biotech, Inc.
$1,462
Dendreon Pharmaceuticals LLC
$1,086
Endo Pharmaceuticals Inc.
$577
Myriad Genetic Laboratories, Inc.
$507
PFIZER INC.
$496
ABBVIE INC.
$491
Allergan, Inc.
$484
PROCEPT BioRobotics Corporation
$402
BIOTISSUE HOLDINGS, INC.
$396
Coloplast Corp
$364
UroGen Pharma, Inc.
$324
Blue Earth Diagnostics Limited
$277
Myovant Sciences Inc.
$274
Bayer Healthcare Pharmaceuticals Inc.
$258
AstraZeneca Pharmaceuticals LP
$222
AbbVie, Inc.
$205
Sumitomo Pharma America, Inc.
$202
Olympus America Inc.
$187
Amgen Inc.
$181
Axonics, Inc.
$154
Bayer HealthCare Pharmaceuticals Inc.
$146
IMMUNITYBIO, INC.
$133
Teleflex LLC
$132
BIOTISSUE HOLDINGS INC.
$130
Novartis Pharmaceuticals Corporation
$128
Alnylam Pharmaceuticals Inc.
$117
Boston Scientific Corporation
$116
Progenics Pharmaceuticals, Inc.
$111
Merck Sharp & Dohme LLC
$103
Telix Pharmaceuticals
$99
COLOPLAST CORP
$99
UROGEN PHARMA, INC.
$91
Hollister Incorporated
$85
AbbVie Inc.
$83
Ferring Pharmaceuticals Inc.
$77
UROVANT SCIENCES INC
$69
MEDIVATION FIELD SOLUTIONS LLC
$69
C. R. Bard, Inc. & Subsidiaries
$65
PROGENICS PHARMACEUTICALS, INC.
$52
Duchesnay USA Incorporated
$51
ACCORD HEALTHCARE, INC.
$51
Merck Sharp & Dohme Corporation
$47
Sagent Pharmaceuticals, Inc.
$45
Medtronic USA, Inc.
$44
Acerus Pharmaceuticals Corporation
$41
180 Medical, Inc.
$37
Rochester Medical Corporation
$37
Palette Life Sciences, Inc.
$32
Foundation Medicine, Inc.
$29
Supernus Pharmaceuticals, Inc.
$25
TerSera Therapeutics LLC
$25
Tempus AI, Inc
$25
ABC Home Medical Supply, Inc.
$25
Endo USA, Inc.
$24
Innovation Technologies Inc
$22
Travere Therapeutics, Inc.
$21
Allergan Inc.
$21
Ethicon US, LLC
$19
Mission Pharmacal Company
$18
Provepharm Inc.
$17
Abbott Laboratories
$17
Richard Wolf Medical Instruments Corp.
$17
Avadel Specialty Pharmaceuticals, LLC
$17
Antares Pharma, Inc.
$16
Medtronic, Inc.
$14
Zyla Life Sciences
$13
Top 3 companies account for 34.4% of all-time payments
Associated products mentioned in payments ›
ADSTILADRIN · AMS 700 CXR RTE Kit · ANKTIVA · AQUABEAM ROBOTIC SYSTEM · AQUABEAM SYSTEM · AVEED · Axium INS DRG IPG · Axonics · Axonics r-SNM System · Axumin · BLUDIGO · BOTOX · Bard Urinary Drainage Bag · CAMCEVI · CONTINENCE CARE · CURE CATHETER · DIGITEX · ERLEADA · ETHICON · Erleada · GEMTESA · GENTLECATH GLIDE · Glydo · ILLUCCIX · INTERSTIM · IRRISEPT · JELMYTO · KEYTRUDA · LUPRON DEPOT · LYNPARZA · Lupron · Lupron Depot · MAGIC3 · MYRBETRIQ · Myrbetriq · NEOX · NOCDURNA · Natesto · Noctiva · Nubeqa · ORGOVYX · OXLUMO · Olympus Cysto-Resection · Olympus Ureteroscopes · Osphena · PLUVICTO · POSLUMA · PREMARIN · PROLARIS · PROVENGE · PYLARIFY · Prolaris · Prolia · RETRACE · RYBREVANT · Rezum Generator · SOLESTA · SPEEDICATH · SPRIX · Saffron · SpeediCath · TITAN · TLANDO · TOVIAZ · Thiola · Titan · UROLIFT · Uribel · UroLift System · VAPRO · VaPro Plus Pocket · Veozah · XGEVA · XIAFLEX · XTANDI · Xofigo · Xtandi · ZOLADEX · ZYTIGA · iTIND System · rezum Generator
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (86%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Opticians within 10 mi
238
Per 100K population
7.2
County median income
$102,285
Nearest hospital
TRI-CITY MEDICAL CENTER
0.0 mi
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. Guerena is a clinical cardiology specialist, with above-average Medicare volume (top 28% in CA), with low-engagement 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
Is Dr. Guerena experienced with office visit, established patient (20-29 min)?
Based on Medicare claims data, Dr. Guerena performed 923 office visit, established patient (20-29 min) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Guerena receive payments from pharmaceutical companies?
Yes. Dr. Guerena received a total of $13,198 from 67 companies across 566 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Guerena's costs compare to other opticians in Oceanside?
Dr. Guerena's average Medicare payment per service is $74. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Guerena) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
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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