Medicare Enrolled
Dr. Diego Hernandez, M.D.
Surgery · Bloomfield Hills, MI
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. Hernandez 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. Hernandez
Dr. Diego Hernandez is a surgery specialist in Bloomfield Hills, MI, with 20 years of NPI registration. Based on federal Medicare data, Dr. Hernandez performed 2,156 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Hernandez received a total of $2,124 from 17 pharmaceutical and/or device companies across 93 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Hernandez 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.
✓ 20 years of NPI registration
▲ Top 2% volume in MI
$2,124 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗2,156
Medicare services
Top 2% in MI for surgery
Not available
Unique patients (not deduplicated)
$178
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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 (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. |
261 | $95 | $135 |
| 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. |
244 | $66 | $95 |
| Additional sedation, per 15 minutes Administration of a drug to deepen sedation during a procedure. This code covers each additional 15-minute increment of sedation beyond the initial period. |
213 | $9 | $15 |
| Additional blood vessel ultrasound evaluation An ultrasound exam of a blood vessel that includes a radiologist's review. This code applies to each additional vessel evaluated beyond the initial one. |
141 | $140 | $325 |
| Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts A complete ultrasound exam of the aorta, vena cava, groin vessels, or bypass grafts. This imaging test uses sound waves to visualize these blood vessels. |
136 | $140 | $315 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
122 | $1 | $8 |
| Vein wound compression bandage application, lower leg, ankle, and foot Application of compression bandages to the lower leg, ankle, and foot to manage vein-related wounds. |
102 | $85 | $177 |
| Injection, fentanyl citrate, 0.1 mg | 95 | $1 | $2 |
| Midazolam injection, per 1 mg Administration of midazolam hydrochloride, a sedative medication, measured in 1 mg increments. |
74 | $0 | $6 |
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
64 | $0 | $9 |
| 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. |
61 | $119 | $205 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
60 | $40 | $70 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
60 | $1 | $2 |
| Ultrasound of blood vessel, initial vessel An ultrasound exam of a blood vessel that includes a radiologist's review of the initial vessel. |
57 | $764 | $2,125 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in the arm or leg. The test uses sound waves to check blood flow and may include compression and other maneuvers. |
57 | $151 | $375 |
| Ultrasound guidance for blood vessel access Use of ultrasound imaging to help locate and access a blood vessel. This guidance assists healthcare providers in performing procedures such as inserting IV lines or drawing blood. |
56 | $32 | $65 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in one arm or leg using compression and other maneuvers to assess blood flow and check for blockages. |
55 | $92 | $210 |
| Ultrasound-guided injection into a single leg vein A chemical agent is injected into one incompetent vein in the leg while using ultrasound to guide the needle placement. |
49 | $1,036 | $2,250 |
| Radiologist review of lower body vein image A radiologist reviews images of the major veins in the lower body to assess their structure and function. |
46 | $93 | $225 |
| Insertion of vena cava tube A procedure to place a tube into the vena cava, the large vein that carries blood to the heart. |
44 | $223 | $800 |
| Radiologist review of arm or leg vein image A radiologist reviews an image of a vein in one arm or leg. |
43 | $88 | $200 |
| Vein stent insertion with radiologist review A stent is placed in a vein to keep it open, with review by a radiologist. This is performed on the initial vein treated. |
40 | $2,764 | $5,750 |
| Additional vein stent insertion with radiologist review This procedure involves placing a stent in an additional vein and includes a radiologist's review of the placement. |
31 | $1,373 | $3,000 |
| Ultrasound of arm and leg arteries This procedure uses sound waves to create images of the blood vessels in the arms and legs. It allows healthcare providers to examine the structure and blood flow within these arteries. |
20 | $48 | $145 |
| Methylprednisolone injection, up to 125 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, with a dosage of up to 125 mg. |
13 | $4 | $10 |
| Ultrasound of leg arteries or grafts An imaging test that uses sound waves to create pictures of the blood vessels in the legs or any surgical grafts present. |
12 | $188 | $425 |
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. These counts do not measure clinical quality or years of experience.
15.3% high complexity
34.9% medium
49.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$2,124
Total received (2018-2024)
Avg $303/year across 7 years
Top 45% in MI for surgery
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
17
Companies
93
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$85
2023
$118
2022
$320
2021
$124
2020
$228
2019
$471
2018
$779
Payments by company (2024)
CashFlow Solutions, LLC
$38
Boston Scientific Corporation
$30
Bard Peripheral Vascular, Inc.
$16
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
Boston Scientific Corporation
$767
BOSTON SCIENTIFIC CORPORATION
$404
CryoLife, Inc.
$331
Janssen Pharmaceuticals, Inc
$128
Cook Medical LLC
$118
Smith & Nephew, Inc.
$67
CashFlow Solutions, LLC
$66
PFIZER INC.
$42
E.R. Squibb & Sons, L.L.C.
$42
BARD PERIPHERAL VASCULAR, INC.
$29
Medtronic, Inc.
$29
Terumo Medical Corporation
$28
Bard Peripheral Vascular, Inc.
$16
Integra LifeSciences Corporation
$16
Smith+Nephew, Inc.
$16
Derma Sciences, Inc.
$12
Philips Electronics North America Corporation
$12
Top 3 companies account for 70.7% of all-time payments
Associated products mentioned in payments ›
AMNIOEXCEL · AMPLATZ · AngioJet Ultra 5000A · CVX-300 · ELIQUIS · ELUVIA · GENERAL ATHERECTOMY · GENERAL CATHETERS · GENERAL GUIDEWIRES · GENERAL METALLIC STENTS · GENERAL ULTRASOUND · GENERAL - METALLIC STENTS · GENERAL METALLIC STENTS · GENERAL ULTRASOUND · General - Balloons · General - Vascular Intervention · Glidesheath · INNOVA · JETSTREAM · LYMPHA PRESS OPTIMAL PLUS(US) BT · OMNIGRAFT · Peripheral RotaLink Plus · ROTALINK · Santyl · TRUEPATH · VENASEAL · VENOUS WALLSTENT · VENOVO · WALLSTENT · XARELTO · ZILVER PTX · ZILVER VENA
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Geographic Context
Surgerists in nearby ZIP areas
583
County median income
$95,296
Nearest hospital to ZIP centroid (approximate)
TRINITY HEALTH OAKLAND HOSPITAL
3.2 mi
3.2 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. Hernandez is a clinical cardiology specialist, with above-average Medicare volume (top 2% in MI), with 20 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. Hernandez experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Hernandez performed 261 office visit, established patient (30-39 min) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Hernandez receive payments from pharmaceutical companies?
Yes. Dr. Hernandez received a total of $2,124 from 17 companies across 93 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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. Hernandez's costs compare to other surgerists in Bloomfield Hills?
Dr. Hernandez's average Medicare payment per service is $178. 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. Hernandez) 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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