Medicare Enrolled
Dr. Mark Song, MD, PHD
Nephrology · Los Angeles, CA
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. Song 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. Song
Dr. Mark Song is a nephrology specialist in Los Angeles, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Song performed 9,235 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Song received a total of $26,505 from 73 pharmaceutical and/or device companies across 1536 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. Song 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 4% volume in CA
$26,505 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗9,235
Medicare services
Top 4% in CA for nephrology
Not available
Unique patients (not deduplicated)
$79
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 (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. |
3,182 | $74 | $120 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
574 | $8 | $10 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
453 | $101 | $200 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
440 | $108 | $210 |
| 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. |
427 | $175 | $350 |
| Advance care planning consultation, first 30 min A session focused on discussing and documenting future healthcare preferences and goals. This service covers the initial 30 minutes of the planning discussion. |
412 | $89 | $120 |
| Annual alcohol misuse screening, 5 to 15 minutes | 411 | $21 | $30 |
| Annual depression screening | 367 | $21 | $30 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
366 | $144 | $250 |
| 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. |
360 | $55 | $160 |
| Dialysis services for patients 20 or older Dialysis treatment provided to patients aged 20 years or older, involving four or more physician visits per month. |
244 | $305 | $461 |
| Complete breast ultrasound, 1 breast A complete ultrasound examination of one breast to visualize internal structures. |
200 | $144 | $300 |
| 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. |
193 | $11 | $36 |
| Complete pelvic ultrasound An imaging test using sound waves to create pictures of the organs and structures within the pelvis. |
190 | $99 | $200 |
| Quadrivalent influenza vaccine, preservative-free A flu shot containing four strains of the influenza virus, formulated without preservatives, administered in a 0.5 ml dose. |
178 | $22 | $40 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
176 | $34 | $35 |
| Home health plan of care certification Certification by a physician or allowed practitioner for Medicare-covered home health services under a home health plan of care. This includes contacting the home health agency and reviewing reports of patient status required by physicians. |
156 | $44 | $80 |
| 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. |
108 | $117 | $250 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
99 | $3 | $10 |
| Ceftriaxone antibiotic injection This code represents the administration of ceftriaxone sodium, an antibiotic medication. The charge is calculated for every 250 mg of the drug administered. |
92 | $0 | $20 |
| 5% dextrose/normal saline (500 ml = 1 unit) | 92 | $1 | $10 |
| Additional hour of intravenous hydration This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy. |
90 | $11 | $35 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
86 | $10 | $34 |
| Home dialysis services per month Monthly dialysis treatment provided in the patient's home for individuals aged 20 or older. |
85 | $253 | $411 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
61 | $11 | $70 |
| Intravenous hydration infusion, 31-60 minutes Administration of fluids into a vein to maintain hydration. This procedure involves an infusion lasting between 31 and 60 minutes. |
47 | $29 | $80 |
| Home health plan of care re-certification A physician reviews the patient's status and contacts the home health agency to re-certify the plan of care without the patient being present. |
45 | $35 | $60 |
| Annual wellness visit, initial visit A yearly appointment to review your health and create a personalized prevention plan. This initial visit focuses on preventive care and health assessment. |
39 | $183 | $300 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
26 | $33 | $80 |
| Blood glucose test using hand-held instrument A test that measures the level of sugar in the blood using a portable device. The result helps monitor blood glucose levels. |
21 | $3 | $10 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
15 | $178 | $450 |
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.
0.7% high complexity
25.4% medium
73.9% routine
Industry Payment Transparency
Open Payments through 2024 ↗$26,505
Total received (2018-2024)
Avg $3,786/year across 7 years
Top 6% in CA for nephrology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
73
Companies
1,536
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
$2,963
2023
$3,149
2022
$3,452
2021
$3,962
2020
$3,491
2019
$4,638
2018
$4,851
Payments by company (2024)
Amgen Inc.
$530
Boehringer Ingelheim Pharmaceuticals, Inc.
$443
AstraZeneca Pharmaceuticals LP
$405
Novartis Pharmaceuticals Corporation
$262
Vifor Pharma, Inc.
$223
Novo Nordisk Inc
$154
Otsuka America Pharmaceutical, Inc.
$143
Lilly USA, LLC
$99
Ardelyx, Inc.
$86
CALLIDITAS THERAPEUTICS US INC.
$68
Bayer Healthcare Pharmaceuticals Inc.
$64
Radius Health, Inc.
$62
ABBVIE INC.
$60
Gilead Sciences, Inc.
$54
AKEBIA THERAPEUTICS INC
$52
Fresenius USA Marketing, Inc.
$50
GlaxoSmithKline, LLC.
$50
IRONWOOD PHARMACEUTICALS, INC
$37
Merck Sharp & Dohme LLC
$34
Lexicon Pharmaceuticals, Inc.
$24
VIVUS LLC
$24
Travere Therapeutics, Inc.
$20
Esperion Therapeutics, Inc.
$19
Top 3 companies account for 46.5% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$4,281
Amgen Inc.
$3,034
Boehringer Ingelheim Pharmaceuticals, Inc.
$1,769
Takeda Pharmaceuticals U.S.A., Inc.
$1,525
Novo Nordisk Inc
$1,379
Lilly USA, LLC
$1,328
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$952
Otsuka America Pharmaceutical, Inc.
$807
Horizon Therapeutics plc
$801
Vifor Pharma, Inc.
$700
AbbVie Inc.
$666
PFIZER INC.
$602
Amarin Pharma Inc.
$546
GlaxoSmithKline, LLC.
$524
Radius Health, Inc.
$498
Fresenius USA Marketing, Inc.
$497
AbbVie, Inc.
$464
Merck Sharp & Dohme Corporation
$397
Novartis Pharmaceuticals Corporation
$368
ABBVIE INC.
$365
Ironwood Pharmaceuticals, Inc
$363
Gilead Sciences, Inc.
$350
Bayer HealthCare Pharmaceuticals Inc.
$314
SANOFI-AVENTIS U.S. LLC
$301
Allergan Inc.
$288
Bayer Healthcare Pharmaceuticals Inc.
$282
Eisai Inc.
$228
AKEBIA THERAPEUTICS INC
$217
VIVUS LLC
$186
Mallinckrodt Hospital Products Inc.
$184
CALLIDITAS THERAPEUTICS US INC.
$175
Calliditas Therapeutics US Inc.
$170
Merck Sharp & Dohme LLC
$151
Aurinia Pharma U.S., Inc.
$147
OPKO Pharmaceuticals, LLC
$127
Janssen Pharmaceuticals, Inc
$99
Ardelyx, Inc.
$86
BAXTER HEALTHCARE
$81
Shield Therapeutics Inc
$76
ARBOR PHARMACEUTICALS, INC.
$73
Keryx Biopharmaceuticals, Inc.
$70
Esperion Therapeutics, Inc.
$65
Nestle HealthCare Nutrition Inc.
$64
Synergy Pharmaceuticals Inc
$61
Medtronic, Inc.
$60
Mallinckrodt LLC
$59
Sumitomo Pharma America, Inc.
$51
IRONWOOD PHARMACEUTICALS, INC
$50
DEXCOM, INC.
$49
Allergan, Inc.
$48
Horizon Pharma plc
$38
Sunovion Pharmaceuticals Inc.
$37
IBSA Pharma Inc.
$34
Janssen Biotech, Inc.
$31
MannKind Corporation
$30
Relypsa, Inc.
$29
Boston Scientific Corporation
$28
Kyowa Kirin, Inc.
$27
Xeris Pharmaceuticals, Inc.
$24
Lexicon Pharmaceuticals, Inc.
$24
Avanir Pharmaceuticals, Inc.
$23
Travere Therapeutics, Inc.
$23
Edwards Lifesciences Corporation
$22
Zealand Pharma US, Inc.
$21
Sanofi Pasteur Inc.
$18
Abbott Laboratories
$18
Almatica Pharma LLC
$18
Mallinckrodt Enterprises LLC
$17
Dexcom, Inc.
$17
Medtronic MiniMed, Inc.
$14
E.R. Squibb & Sons, L.L.C.
$11
RedHill Biopharma Inc.
$11
Orexigen Therapeutics, Inc.
$11
Top 3 companies account for 34.3% of all-time payments
Associated products mentioned in payments ›
ACCRUFER · ACTHAR · AFREZZA · AIRSUPRA · AMITIZA · ANORO · ANORO ELLIPTA · AREXVY · AURYXIA · Aimovig · Amitiza · Auryxia · BASAGLAR · BELSOMRA · BENLYSTA · BREZTRI · BRILINTA · BYDUREON · BYSTOLIC · CHANTIX · COLOGUARD · CONTRAVE · CREON · Creon · DALVANCE · DEXCOM G6 TRANSMITTER · DEXILANT · DUZALLO · Dayvigo · Dexcom G6 Transmitter · ELIQUIS · ENTRESTO · EUCRISA · EVENITY · Edarbi · Edwards SAPIEN 3 Transcatheter Heart Valve · FARXIGA · FLUZONE HIGH-DOSE · FORTEO · FREESTYLE LIBRE 3 · GARDASIL · GARDASIL 9 · GEMTESA · GLUCAGON · GLYXAMBI · GVOKE PFS · Horizant · IBSRELA · INVOKANA · JANUVIA · JARDIANCE · JYNARQUE · KRYSTEXXA · Kerendia · Korsuva · LEQVIO · LICART · LINZESS · LOKELMA · LOREEV XR · LUPKYNIS · LYRICA · Linzess · MINIMED 770G · MOTEGRITY · MOUNJARO · Minimed 770G System · Motegrity · Movantik · NEXLETOL · NUEDEXTA · Not Product Related · OFIRMEV · Otezla · Ozempic · PANCREAZE · PENNSAID · PNEUMOVAX 23 · PRADAXA · PREMARIN · Parsabiv · Prolia · RELISTOR · RYBELSUS · Rayaldee · Rayaldee (old) · Renal - Non Product Related · Repatha · Rybelsus · SAMSCA · SOLIQUA · SOLIQUA 100/33 · SPIRIVA · STEGLATRO · STELARA · STIOLTO RESPIMAT · SYMBICORT · SYNJARDY · Superion Indirect Decompression System · TARPEYO · TOUJEO · TRADJENTA · TRELEGY ELLIPTA · TRINTELLIX · TRULANCE · TRULICITY · Tirosint · Tresiba · Trintellix · Trulance · Tymlos · UBRELVY · Uloric · VERQUVO · VIBERZI · VRAYLAR · Vafseo · Vascepa · Velphoro · Veltassa · Victoza · XIFAXAN · ZEGALOGUE · ZENPEP · iPro2
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
Nephrologists in nearby ZIP areas
355
County median income
$87,760
Nearest hospital to ZIP centroid (approximate)
DOCS SURGICAL HOSPITAL
2.3 mi
2.3 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. Song is a clinical cardiology specialist, with above-average Medicare volume (top 4% in CA), 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. Song experienced with office visit, established patient (20-29 min)?
Based on Medicare claims data, Dr. Song performed 3,182 office visit, established patient (20-29 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. Song receive payments from pharmaceutical companies?
Yes. Dr. Song received a total of $26,505 from 73 companies across 1,536 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. Song's costs compare to other nephrologists in Los Angeles?
Dr. Song's average Medicare payment per service is $79. 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. Song) 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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