Medicare Enrolled
Dr. Narayana Ambati, M.D.
Urology Physician · Fresno, 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. Ambati 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 →
Are you Dr. Ambati?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Ambati
Dr. Narayana Ambati is an urology physician in Fresno, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Ambati performed 9,176 Medicare services across 3,261 unique beneficiaries.
Between the years covered by Open Payments, Dr. Ambati received a total of $4,760 from 44 pharmaceutical and/or device companies across 237 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in urology physician. 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. Ambati 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 12% volume in CA
$4,760 industry payments
Medicare Practice Summary
Medicare Utilization ↗9,176
Medicare services
Top 12% in CA for urology physician
3,261
Unique beneficiaries
$26
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~459 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. |
2,900 | $0 | $0 |
| BCG treatment for bladder cancer | 1,251 | $2 | $10 |
| Urinalysis with microscopic exam A urine test performed manually that includes examining the sample under a microscope to check for abnormalities. |
1,086 | $3 | $8 |
| 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. |
1,073 | $94 | $270 |
| Bladder ultrasound after voiding An ultrasound scan performed after urination to measure the amount of urine remaining in the bladder. |
919 | $9 | $67 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
481 | $8 | $8 |
| Automated urinalysis An automated laboratory test performed on a urine sample to analyze its chemical and physical properties. The procedure uses machinery to detect various substances and cells within the urine. |
228 | $2 | $6 |
| 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. |
169 | $69 | $190 |
| 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. |
168 | $119 | $350 |
| Leuprolide acetate (for depot suspension), 7.5 mg | 167 | $128 | $458 |
| Cystourethroscopy A diagnostic exam of the bladder and urethra using an endoscope to visually inspect the urinary tract. |
125 | $200 | $529 |
| Abdominal X-ray, 1 view An X-ray image of the abdomen taken from a single angle to visualize internal structures. |
121 | $23 | $58 |
| X-ray of body plane An X-ray imaging test that captures a specific plane or section of the body to visualize internal structures. |
116 | $71 | $196 |
| Subcutaneous or intramuscular chemotherapy injection This procedure involves administering anti-cancer hormonal medication through an injection into the tissue under the skin or into a muscle. |
61 | $28 | $75 |
| 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. |
38 | $11 | $44 |
| Bladder instillation of anti-cancer drug A procedure where an anti-cancer medication is introduced directly into the bladder. This method delivers the treatment locally to the bladder tissue. |
34 | $70 | $186 |
| CT scan of abdomen and pelvis with contrast A CT scan of the abdomen and pelvis using contrast dye before and after administration to visualize internal structures. |
28 | $295 | $760 |
| Cell examination of specimen, concentration technique A laboratory test that uses a concentration technique to examine cells from a specimen. |
25 | $34 | $135 |
| 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. |
24 | $52 | $137 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
22 | $85 | $245 |
| Telephone medical discussion, 5-10 minutes A phone conversation with a physician lasting between 5 and 10 minutes to discuss medical matters. |
22 | $47 | $100 |
| Electronic assessment of bladder emptying A test that uses electronic monitoring to evaluate how well the bladder empties urine. |
20 | $6 | $40 |
| 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. |
20 | $157 | $428 |
| Non-needle muscle activity measurement of bladder and bowel openings This procedure measures and records the electrical activity of muscles at the bladder and bowel openings without using needles. |
17 | $27 | $184 |
| Abdominal device insertion with pressure and urine flow study A procedure involving the placement of a device into the abdomen, accompanied by a study to measure pressure and urine flow rate. |
17 | $159 | $432 |
| Complex urodynamic pressure measurement A test that measures the pressure of urine flow in the bladder along with urethral and voiding pressures. |
15 | $303 | $848 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
15 | $75 | $153 |
| Transrectal ultrasound of the pelvis An ultrasound imaging procedure where a probe is inserted into the rectum to visualize pelvic structures. |
14 | $118 | $400 |
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 ↗$4,760
Total received (2018-2024)
Avg $680/year across 7 years
Top 35% in CA for urology physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
44
Companies
237
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
$4,760 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$831
2023
$1,460
2022
$366
2021
$474
2020
$142
2019
$549
2018
$937
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Janssen Biotech, Inc.
$165
Sumitomo Pharma America, Inc.
$155
IMMUNITYBIO, INC.
$65
PFIZER INC.
$65
Ferring Pharmaceuticals Inc.
$58
Verity Pharmaceuticals Inc.
$58
Olympus America Inc.
$44
Myriad Genetic Laboratories, Inc.
$38
ACCORD HEALTHCARE, INC.
$38
Teleflex LLC
$37
Boston Scientific Corporation
$36
Novartis Pharmaceuticals Corporation
$29
Antares Pharma, Inc.
$25
Tolmar, Inc.
$19
Top 3 companies account for 46.4% of 2024 payments
All-time payments by company (2018-2024) ›
Janssen Biotech, Inc.
$781
Myriad Genetic Laboratories, Inc.
$541
Astellas Pharma US Inc
$363
Antares Pharma, Inc.
$357
PFIZER INC.
$314
Sumitomo Pharma America, Inc.
$310
Dendreon Pharmaceuticals LLC
$202
Bayer HealthCare Pharmaceuticals Inc.
$146
Boston Scientific Corporation
$131
Medtronic USA, Inc.
$130
Olympus America Inc.
$117
Avadel Specialty Pharmaceuticals, LLC
$114
NeoTract Inc.
$105
ACCORD HEALTHCARE, INC.
$94
Myovant Sciences Inc.
$85
KARL STORZ Endoscopy-America
$82
TOLMAR Pharmaceuticals, Inc.
$80
Janssen Pharmaceuticals, Inc
$71
Ferring Pharmaceuticals Inc.
$69
IMMUNITYBIO, INC.
$65
Verity Pharmaceuticals Inc.
$58
Teleflex LLC
$51
ABBVIE INC.
$43
UROVANT SCIENCES INC
$39
Tolmar, Inc.
$37
Richard Wolf Medical Instruments Corp.
$33
Merck Sharp & Dohme LLC
$32
Novartis Pharmaceuticals Corporation
$29
Supernus Pharmaceuticals, Inc.
$26
BOSTON SCIENTIFIC CORPORATION
$25
UroGen Pharma, Inc.
$23
Accord Healthcare, Inc.
$23
NxThera, Inc.
$22
Endo Pharmaceuticals Inc.
$20
Ambu Inc.
$18
Merck Sharp & Dohme Corporation
$17
Axonics, Inc.
$16
AbbVie Inc.
$16
Agiliti Surgical, Inc.
$15
AstraZeneca Pharmaceuticals LP
$14
MEDIVATION FIELD SOLUTIONS LLC
$12
AbbVie, Inc.
$12
Rochester Medical Corporation
$11
Blue Earth Diagnostics Limited
$11
Top 3 companies account for 35.4% of all-time payments
Associated products mentioned in payments ›
8.5 FR. X 675MM · ADSTILADRIN · ANKTIVA · ASM · Androgel · Axonics r-SNM System · Axumin · BRAC CDx · CAMCEVI · CCU · CE · CMOS VIDEO URETEROSCOPE · ELIGARD · ERLEADA · Erleada · FIRMAGON · GEMTESA · GENERAL BPH · GENERAL BPH · GENERAL - BPH · GENERAL BPH · H3-Z · H3-ZI · HEAD · IMAGE1 CONNECT · IMAGE1 S · INTERSTIM ICON · JELMYTO · KEYTRUDA · LITHOVUE · LUPRON DEPOT · LYNPARZA · MODULAR · MYRBETRIQ · Myrbetriq · NOCDURNA · Noctiva · Nubeqa · ORGOVYX · Otrexup · PLUVICTO · PROLARIS · PROVENGE · Prolaris · Rezum · SUTENT · SpaceOAR VUE System - 10mL · Tlando · Trelstar · UROLIFT · US · UroLift · UroLift System · VIAGRA · XIAFLEX · XTANDI · XYOSTED · Xofigo · ZYTIGA · iTIND System
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.
Geographic Context
Urology physicians within 10 mi
18
Per 100K population
1.8
County median income
$71,434
Nearest hospital
SAINT AGNES 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. Ambati is a clinical cardiology specialist, with above-average Medicare volume (top 12% in CA), with low-engagement industry engagement, 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. Ambati experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Ambati performed 2,900 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. Ambati receive payments from pharmaceutical companies?
Yes. Dr. Ambati received a total of $4,760 from 44 companies across 237 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. Ambati's costs compare to other urology physicians in Fresno?
Dr. Ambati's average Medicare payment per service is $26. 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. Ambati) 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 →
Explore related providers
Same specialty & city
Urology Physicians in Fresno
Browse urology physicians in Fresno ranked by procedure volume and transparency data.
Highest volume
Top Urology Physicians in CA
Urology physicians ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Urology Physicians in CA
Which CA urology physicians receive the most from drug and device companies.
By company
Janssen Biotech, Inc. Payments to Doctors
See all physicians who received payments from Janssen Biotech, Inc.
By company
Myriad Genetic Laboratories, Inc. Payments to Doctors
See all physicians who received payments from Myriad Genetic Laboratories, Inc.
By company
Astellas Pharma US Inc Payments to Doctors
See all physicians who received payments from Astellas Pharma US Inc.
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology