Medicare Enrolled
Dr. Mark Davidian, M.D.
Radiation Oncology · Sacramento, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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. Davidian 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. Davidian
Dr. Mark Davidian is a radiation oncology specialist in Sacramento, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Davidian performed 12,388 Medicare services across 3,444 unique beneficiaries.
Between the years covered by Open Payments, Dr. Davidian received a total of $6,116 from 16 pharmaceutical and/or device companies across 131 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in radiation oncology. 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. Davidian 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 in practice
▲ Top 15% volume in CA
$6,116 industry payments
Medicare Practice Summary
Medicare Utilization ↗12,388
Medicare services
Top 15% in CA for radiation oncology
3,444
Unique beneficiaries
$16
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~619 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 |
|---|---|---|---|
| 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. |
8,831 | $0 | $1 |
| Chest X-ray, 2 views An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall. |
326 | $25 | $127 |
| CT scan of chest, without contrast A computed tomography scan of the chest area that uses X-rays to create detailed images without the use of contrast dye. |
193 | $105 | $779 |
| Shoulder X-ray, 2+ views An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures. |
178 | $25 | $122 |
| Hip X-ray, 2-3 views An X-ray imaging test of the hip joint using two to three different angles to visualize the bones and surrounding structures. |
167 | $34 | $205 |
| X-ray of lower and sacral spine, 2-3 views An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area. |
164 | $31 | $151 |
| Knee X-ray, 3 views An X-ray imaging test of the knee joint that captures three different angles to evaluate the bones and surrounding structures. |
155 | $28 | $147 |
| Foot X-ray, 3+ views An X-ray imaging test of the foot that captures at least three different views to evaluate the bones and joints. |
155 | $24 | $119 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
139 | $36 | $178 |
| Ultrasound of head and neck soft tissue This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation. |
136 | $83 | $588 |
| X-ray of hand, minimum of 3 views An X-ray imaging test of the hand that captures at least three different angles to visualize the bones and joints. |
115 | $25 | $126 |
| 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. |
115 | $10 | $72 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
109 | $84 | $717 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
94 | $160 | $971 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
87 | $83 | $566 |
| Limited abdominal ultrasound A focused ultrasound examination of the abdomen to evaluate specific organs or areas. This procedure uses sound waves to create images of internal structures. |
81 | $63 | $446 |
| Chest X-ray, 1 view An X-ray image of the chest taken from a single angle. This imaging test is used to visualize the structures within the chest cavity. |
78 | $7 | $28 |
| Wrist X-ray, minimum 3 views An imaging test using X-rays to capture at least three different angles of the wrist bones and joints. |
77 | $27 | $134 |
| X-ray of upper spine, 2-3 views An X-ray imaging test of the upper spine using two to three different angles to visualize the bones and structures. |
73 | $32 | $154 |
| Abdominal X-ray, 1 view An X-ray image of the abdomen taken from a single angle to visualize internal structures. |
68 | $22 | $93 |
| Ankle X-ray, minimum 3 views An X-ray imaging test of the ankle that captures at least three different angles to evaluate the bones and joints. |
61 | $28 | $133 |
| CT scan of abdomen and pelvis with contrast A CT scan that uses dye to create detailed images of the abdomen and pelvis. This imaging test helps doctors examine internal organs and structures in these areas. |
53 | $251 | $1,306 |
| X-ray of lower and sacral spine, minimum of 4 views An X-ray imaging test of the lower back and sacrum using at least four different angles to visualize the bones and joints. |
49 | $34 | $243 |
| 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. |
45 | $11 | $47 |
| X-ray of upper spine, 4-5 views An X-ray imaging test of the upper spine using 4 to 5 different views to visualize the bones and structures in that area. |
44 | $34 | $167 |
| Knee X-ray, 1-2 views An X-ray imaging test of the knee joint using one to two different angles to visualize the bones and surrounding structures. |
40 | $24 | $114 |
| Radiologist review of CT-guided needle placement A radiologist reviews the CT imaging used to guide the placement of a needle. |
39 | $57 | $236 |
| Transvaginal pelvic ultrasound An ultrasound exam using a probe inserted into the vagina to image the uterus, ovaries, fallopian tubes, cervix, and surrounding pelvic structures. |
38 | $92 | $295 |
| Fluoroscopic guidance for central vein access device Use of live X-ray imaging to guide the placement or removal of a central vein access device. |
38 | $14 | $62 |
| 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. |
35 | $52 | $421 |
| Complete pelvic ultrasound An imaging test using sound waves to create pictures of the organs and structures within the pelvis. |
34 | $74 | $517 |
| Ultrasound of abdominal aorta An imaging test that uses sound waves to create pictures of the abdominal aorta, the large blood vessel that carries blood from the heart to the lower body. |
33 | $120 | $505 |
| X-ray of finger, minimum of 2 views An X-ray imaging test of a finger using at least two different angles to visualize the bones and surrounding structures. |
32 | $29 | $135 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
31 | $33 | $145 |
| CT scan of abdomen and pelvis, without contrast A computed tomography scan that creates detailed images of the abdominal and pelvic organs. The procedure is performed without the use of intravenous contrast dye. |
28 | $149 | $825 |
| X-ray of both hips, 3-4 views An X-ray imaging test that captures 3 to 4 views of both hip joints to visualize the bones and surrounding structures. |
26 | $42 | $239 |
| Pelvis X-ray, 1-2 views An X-ray imaging test of the pelvic area using one to two different angles to visualize the bones and joints. |
25 | $22 | $116 |
| Elbow X-ray, minimum 3 views An X-ray imaging test of the elbow joint that captures at least three different angles to visualize the bones and surrounding structures. |
25 | $21 | $126 |
| 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. |
24 | $187 | $884 |
| 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. |
24 | $72 | $544 |
| Ultrasound guidance for needle placement Use of ultrasound imaging to guide the precise placement of a needle during a medical procedure. |
22 | $25 | $115 |
| X-ray of middle spine, 3 views An X-ray imaging test that captures three different views of the middle section of the spine to evaluate its structure. |
20 | $29 | $188 |
| Central venous port insertion A surgical procedure to place a small reservoir under the skin for long-term access to the bloodstream. The device is connected to a vein to allow for repeated medication administration or blood draws. |
19 | $256 | $1,045 |
| Core needle biopsy of lung or mediastinum A procedure to remove a small tissue sample from the lung or the space between the lungs using a needle inserted through the skin. |
18 | $119 | $1,490 |
| Ultrasound of scrotum An imaging test that uses sound waves to create pictures of the scrotum and its contents. It helps evaluate the testicles and surrounding structures. |
17 | $80 | $661 |
| 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. |
17 | $156 | $871 |
| Rib X-ray, minimum 3 views An X-ray imaging test of the ribs on one side of the body. The procedure includes a minimum of three different views to capture detailed images. |
16 | $29 | $159 |
| X-ray of middle spine, 2 views An X-ray imaging test that produces two views of the middle section of the spine to visualize the bones and joints. |
16 | $26 | $173 |
| X-ray of lower and sacral spine, 2-3 views with bending An X-ray imaging test of the lower back and sacrum using 2 to 3 views, including bending positions. |
16 | $34 | $230 |
| Insertion of tunneled central venous catheter for infusion, age 5+ A surgical procedure to place a long-term catheter into a large vein for delivering medications or fluids. The catheter is tunneled under the skin to reduce infection risk and provide stable access for patients aged 5 and older. |
15 | $205 | $1,494 |
| CT scan of chest blood vessels with contrast A CT scan that uses contrast dye to create detailed images of the blood vessels in the chest. |
15 | $146 | $1,537 |
| X-ray of lower leg, 2 views An X-ray imaging test of the lower leg using two different angles to visualize the bones and surrounding structures. |
15 | $22 | $140 |
| Chest fluid aspiration with imaging guidance This procedure involves removing fluid from the chest cavity using imaging technology to guide the needle placement. |
14 | $95 | $1,508 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
14 | $148 | $1,032 |
| Limited ultrasound of joint or extremity A focused ultrasound exam of a specific joint or other structure in the arm or leg, excluding blood vessels. |
14 | $36 | $196 |
| 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. |
14 | $65 | $196 |
| Bone marrow biopsy and aspiration A procedure to remove a small sample of bone marrow and liquid for laboratory testing. The sample is analyzed to help diagnose various medical conditions. |
13 | $59 | $325 |
| 3D radiographic procedure A radiographic imaging technique that creates three-dimensional representations of internal structures. |
13 | $8 | $30 |
| X-ray of toe, minimum of 2 views An X-ray imaging test of the toe using at least two different angles to visualize the bones and surrounding structures. |
12 | $26 | $126 |
| 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. |
12 | $37 | $376 |
| Removal of central venous port or pump A procedure to remove a central venous access device, such as a port or pump, from the body. |
11 | $153 | $590 |
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.
0.1% high complexity
80.7% medium
19.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$6,116
Total received (2018-2024)
Avg $874/year across 7 years
Top 10% in CA for radiation oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
16
Companies
131
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
$6,116 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$377
2023
$1,181
2022
$1,155
2021
$1,035
2020
$698
2019
$1,277
2018
$392
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Medtronic, Inc.
$167
Boston Scientific Corporation
$146
Inari Medical, Inc.
$64
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
Boston Scientific Corporation
$2,758
Inari Medical, Inc.
$1,134
Medtronic, Inc.
$830
BOSTON SCIENTIFIC CORPORATION
$350
Medtronic USA, Inc.
$332
Stryker Corporation
$229
Terumo Medical Corporation
$211
Medtronic Vascular, Inc.
$125
Abbott Laboratories
$30
Shockwave Medical, Inc
$26
Travere Therapeutics, Inc.
$18
Arrow International, Inc.
$17
AngioDynamics, Inc.
$16
Tactile Systems Technology Inc
$14
AstraZeneca Pharmaceuticals LP
$13
Janssen Pharmaceuticals, Inc
$12
Top 3 companies account for 77.2% of all-time payments
Associated products mentioned in payments ›
ABRE · ANGIOJET · AUTOPLEX · AZUR CX DETACHABLE · DIREXION · EKOSONIC · ELUVIA · EkoSonic · FARXIGA · FLEXITOUCH · FLOWTRIEVER CATHETER · FlowTriever · GENERAL ATHERECTOMY · GENERAL VASCULAR INTERVENTION · GENERAL - ANGIOGRAPHY · GENERAL - CATHETERS · GENERAL ULTRASOUND · GENERAL VASCULAR INTERVENTION · General - Embolics · IN.PACT ADMIRAL · IN.PACT Admiral · INNOVA · INTERLOCK · IVS - VERTEBRAL AUGMENTATION PRODUCTS · Interlock · JETSTREAM · JETSTREAM SC · KYPHON Balloon Kyphoplasty · KYPHON EXPRESS II KYPHOPAK TRAY · Navicross · OSTEOCOOL RF ABLATION · OnControl · Perclose ProGlide suture mediated closure system · S · SHOCKWAVE IVL SYSTEM WITH THE SHOCKWAVE C2 CORONARY IVL CATHETER · SPINEJACK · WALLSTENT · XARELTO
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 (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 10% for radiation oncology in CA.
Geographic Context
Radiation oncologists within 10 mi
240
Per 100K population
15.2
County median income
$88,724
Nearest hospital
SUTTER MEDICAL CENTER, SACRAMENTO
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. Davidian is a mixed practice specialist, with above-average Medicare volume (top 15% in CA), with low-engagement industry engagement in the top 10% of CA peers, 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. Davidian experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Davidian performed 8,831 contrast dye for imaging (iodine-based) 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. Davidian receive payments from pharmaceutical companies?
Yes. Dr. Davidian received a total of $6,116 from 16 companies across 131 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. Davidian's costs compare to other radiation oncologists in Sacramento?
Dr. Davidian's average Medicare payment per service is $16. 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. Davidian) 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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