Medicare Enrolled

Dr. Sreedhar Mandayam, M.D.

Nephrology · Houston, TX
Practice pattern: Clinical Cardiology — Primarily office-based clinical cardiology
1515 HOLCOMBE BLVD, Houston, TX 77030
7137926161
Registered in NPPES since 2006
NPI: 1225051048 verify on NPPES ↗
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. Mandayam 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. Mandayam

Dr. Sreedhar Mandayam is a nephrology specialist in Houston, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Mandayam performed 788 Medicare services in 2023. These records do not provide a deduplicated patient total.

Between the years covered by Open Payments, Dr. Mandayam received a total of $662,548 from 51 pharmaceutical and/or device companies across 975 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. Mandayam 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 ▲ 788 Medicare services $662,548 industry payments

Medicare Practice Summary — 2023

Medicare Utilization ↗
788
Medicare services
Bottom 32% in TX for nephrology
Lower Medicare volume may reflect subspecialty focus, hospital-based work, or a higher share of non-Medicare patients.
Not available
Unique patients (not deduplicated)
$108
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
Hospital follow-up visit, high complexity
Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter.
331 $95 $286
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.
117 $140 $674
Critical care, first 30-74 min
Emergency medical care for a critically ill or injured patient lasting between 30 and 74 minutes. This service involves direct patient care and medical decision making to stabilize the patient.
117 $173 $992
Hemodialysis, single evaluation
A dialysis procedure to filter waste from the blood, performed with a physician's evaluation.
73 $58 $644
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.
53 $71 $266
Hospital follow-up visit, moderate complexity
Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service.
37 $64 $225
New patient office visit, complex (60-74 min) 28 $143 $571
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.
19 $99 $458
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.
13 $36 $170
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.

Industry Payment Transparency

Open Payments through 2024 ↗
$662,548
Total received (2018-2024)
Avg $94,650/year across 7 years
Top 0% in TX for nephrology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
51
Companies
975
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
$117,907
2023
$147,235
2022
$123,719
2021
$59,488
2020
$56,925
2019
$146,327
2018
$10,947

Payments by company (2024)

CALLIDITAS THERAPEUTICS US INC.
$74,333
Otsuka America Pharmaceutical, Inc.
$15,640
Novartis Pharmaceuticals Corporation
$12,435
Kyowa Kirin, Inc.
$8,629
Bayer Healthcare Pharmaceuticals Inc.
$2,300
Merck Sharp & Dohme LLC
$1,395
GENZYME CORPORATION
$1,123
Amgen Inc.
$764
Travere Therapeutics, Inc.
$258
Otsuka Pharmaceutical Development & Commercialization, Inc.
$142
Pharming Healthcare, Inc.
$127
Ardelyx, Inc.
$124
Fresenius USA Marketing, Inc.
$122
Mallinckrodt Hospital Products Inc.
$122
GlaxoSmithKline, LLC.
$112
VERTEX PHARMACEUTICALS INCORPORATED
$90
Apellis Pharmaceuticals, Inc.
$66
Alexion Pharmaceuticals, Inc.
$47
Baxter Healthcare
$41
OPKO Pharmaceuticals, LLC
$23
BTG International, Inc.
$13
Top 3 companies account for 86.9% of 2024 payments
All-time payments by company (2018-2024) ›
CALLIDITAS THERAPEUTICS US INC.
$101,791
Otsuka America Pharmaceutical, Inc.
$91,970
Mallinckrodt Enterprises LLC
$84,928
Bayer HealthCare Pharmaceuticals Inc.
$63,086
Calliditas Therapeutics US Inc.
$61,817
Horizon Therapeutics plc
$44,024
Alexion Pharmaceuticals, Inc.
$35,811
GENZYME CORPORATION
$26,652
Travere Therapeutics, Inc.
$25,120
Janssen Pharmaceuticals, Inc
$23,214
Mallinckrodt Hospital Products Inc.
$20,417
Bayer Healthcare Pharmaceuticals Inc.
$18,984
AMAG Pharmaceuticals, Inc.
$13,470
Novartis Pharmaceuticals Corporation
$12,571
Amgen Inc.
$9,616
Kyowa Kirin, Inc.
$8,629
Otsuka Pharmaceutical Development & Commercialization, Inc.
$8,054
AstraZeneca Pharmaceuticals LP
$1,720
Relypsa, Inc.
$1,719
Merck Sharp & Dohme LLC
$1,395
Roche Products Limited
$1,308
NxStage Medical, Inc.
$904
GlaxoSmithKline, LLC.
$638
Aurinia Pharma U.S., Inc.
$638
BAXTER HEALTHCARE
$495
Vifor Pharma, Inc.
$399
Fresenius USA Marketing, Inc.
$384
Novo Nordisk Inc
$296
OPKO Pharmaceuticals, LLC
$254
AKEBIA THERAPEUTICS INC
$253
Horizon Pharma plc
$231
Baxter Healthcare
$219
Keryx Biopharmaceuticals, Inc.
$200
Ardelyx, Inc.
$149
Bard Peripheral Vascular, Inc.
$143
Vertex Pharmaceuticals Incorporated
$129
Pharming Healthcare, Inc.
$127
Rhythm Pharmaceuticals, Inc.
$112
Mallinckrodt LLC
$104
VERTEX PHARMACEUTICALS INCORPORATED
$90
Retrophin, Inc.
$81
Apellis Pharmaceuticals, Inc.
$66
ACACIA PHARMA INC
$63
Kaneka Pharma America LLC
$57
AngioDynamics, Inc.
$49
Outset Medical Inc
$46
BTG International, Inc.
$39
Allergan Inc.
$27
B. Braun Medical Inc.
$23
SANOFI-AVENTIS U.S. LLC
$18
Daiichi Sankyo Inc.
$17
Top 3 companies account for 42.1% of all-time payments
Associated products mentioned in payments ›
2008T BLUESTAR HEMODIALYSIS MACHINE · ACTHAR · ANDEXXA · AURYXIA · Aranesp · Auryxia · BENLYSTA · BYFAVO · CABLIVI · CRIT-LINE · Critline - Monitors · Crysvita · DALVANCE · DIALOG+ · ENJAYMO · FABRAZYME · FARXIGA · FERAHEME · Fabhalta · Gazyva · IBSRELA · INJECTAFER · INVOKANA · Imcivree · JESDUVROQ · JYNARQUE · KRYSTEXXA · Kerendia · LIBERTY SELECT CYCLER · LOKELMA · LUPKYNIS · NXSTAGE CARTRIDGE EXPRESS · NXSTAGE SYSTEM ONE · Ozempic · Parsabiv · RAYALDEE · RUCONEST · Rayaldee · Renal - Acute · Renal - CRRT · Renal - Dianeal Solution · Renal - Non Product Related · Renal - PrisMax System · Renal - Prismaflex System · Repatha · SAMSCA · SOLIRIS · SYSTEM ONE · System One · TARPEYO · TAVNEOS · TERLIVAZ · Thiola · ULTOMIRIS · Ultomiris · VORAXAZE · Velphoro · Veltassa · Voraxaze · XPHOZAH 30 MG
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 →
Looking for a nephrology specialist in Houston?
Compare nephrologists in the Houston area by procedure volume, costs, and industry payment transparency.
Browse nephrologists nearby

Geographic Context

Nephrologists in nearby ZIP areas
185
County median income
$73,104
Nearest hospital to ZIP centroid (approximate)
MEMORIAL HERMANN - TEXAS MEDICAL CENTER
0.0 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. Mandayam is a clinical cardiology specialist, with moderate Medicare volume, 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. Mandayam experienced with hospital follow-up visit, high complexity?
Based on Medicare claims data, Dr. Mandayam performed 331 hospital follow-up visit, high complexity 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. Mandayam receive payments from pharmaceutical companies?
Yes. Dr. Mandayam received a total of $662,548 from 51 companies across 975 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. Mandayam's costs compare to other nephrologists in Houston?
Dr. Mandayam's average Medicare payment per service is $108. 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. Mandayam) 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 →
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.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Industry payment disclosure alone establishes neither wrongdoing nor legality. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →