Medicare Enrolled
Dr. Parameswaran Hariharan, M.D.
Internal Medicine · Batavia, OH
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. Hariharan 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. Hariharan
Dr. Parameswaran Hariharan is an internal medicine specialist in Batavia, OH, with 21 years of NPI registration. Based on federal Medicare data, Dr. Hariharan performed 1,738 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Hariharan received a total of $2,371 from 30 pharmaceutical and/or device companies across 139 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. Hariharan 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.
✓ 21 years of NPI registration
▲ Top 13% volume in OH
$2,371 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗1,738
Medicare services
Top 13% in OH for internal medicine
Not available
Unique patients (not deduplicated)
$75
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. |
338 | $69 | $135 |
| 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. |
329 | $87 | $120 |
| 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. |
162 | $59 | $90 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
141 | $123 | $150 |
| Hospital discharge day management, 30 minutes or less This service covers the final day of hospital care when the patient is being discharged. It includes coordination of care and instructions for the patient within a time frame of 30 minutes or less. |
111 | $61 | $90 |
| Hospital discharge management, 30+ min This service covers the care provided by a physician or qualified healthcare professional on the day a patient is discharged from the hospital. It requires more than 30 minutes of total time spent on the day of discharge. |
107 | $84 | $125 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
103 | $29 | $35 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
100 | $71 | $75 |
| 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. |
100 | $47 | $100 |
| 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. |
74 | $129 | $215 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
68 | $3 | $7 |
| 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. |
24 | $31 | $65 |
| Pneumococcal conjugate vaccine (PCV20) An intramuscular injection of the 20-valent pneumococcal conjugate vaccine. It is used to protect against diseases caused by Streptococcus pneumoniae bacteria. |
22 | $269 | $290 |
| Pneumonia vaccine administration This procedure involves the injection of a vaccine to protect against pneumococcal disease. It is administered by a healthcare provider. |
18 | $29 | $33 |
| 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. |
16 | $157 | $175 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
13 | $93 | $150 |
| 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. |
12 | $39 | $85 |
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 ↗$2,371
Total received (2018-2024)
Avg $395/year across 6 years
Top 23% in OH for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
30
Companies
139
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
$151
2023
$123
2022
$184
2020
$145
2019
$889
2018
$880
Payments by company (2024)
Lilly USA, LLC
$25
Paratek Pharmaceuticals, Inc.
$23
Phathom Pharmaceuticals, Inc.
$20
Boehringer Ingelheim Pharmaceuticals, Inc.
$19
AstraZeneca Pharmaceuticals LP
$17
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$17
SANOFI-AVENTIS U.S. LLC
$16
E.R. Squibb & Sons, L.L.C.
$15
Top 3 companies account for 45.2% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$268
Novartis Pharmaceuticals Corporation
$227
Amgen Inc.
$196
Astellas Pharma US Inc
$166
Boston Scientific Corporation
$157
GlaxoSmithKline, LLC.
$129
PFIZER INC.
$118
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$115
AbbVie, Inc.
$114
Imperative Care, Inc
$102
Novo Nordisk Inc
$100
Janssen Pharmaceuticals, Inc
$81
Boehringer Ingelheim Pharmaceuticals, Inc.
$78
Lilly USA, LLC
$64
SANOFI-AVENTIS U.S. LLC
$58
Daiichi Sankyo Inc.
$54
Merck Sharp & Dohme Corporation
$46
E.R. Squibb & Sons, L.L.C.
$37
Kowa Pharmaceuticals America, Inc.
$33
Amarin Pharma Inc.
$27
Relypsa, Inc.
$26
Takeda Pharmaceuticals U.S.A., Inc.
$24
Paratek Pharmaceuticals, Inc.
$23
ABBVIE INC.
$21
Medtronic MiniMed, Inc.
$21
Phathom Pharmaceuticals, Inc.
$20
Roche Diagnostics Corporation
$19
Otsuka America Pharmaceutical, Inc.
$18
Sunovion Pharmaceuticals Inc.
$17
SANOFI PASTEUR INC.
$12
Top 3 companies account for 29.1% of all-time payments
Associated products mentioned in payments ›
ANORO · Aimovig · BREO · BYDUREON · CD cobas Reagents · CHANTIX · Creon · ELIQUIS · ENTRESTO · EVENITY · FARXIGA · FLUBLOK QUADRIVALENT · HUMALOG · Humira · INJECTAFER · JANUVIA · JARDIANCE · Livalo · MOUNJARO · MYRBETRIQ · Mavyret · Movantik · NUZYRA · Otezla · Ozempic · PNEUMOVAX 23 · PRODIGY CATHETER · Prolia · Repatha · SAMSCA · SHINGRIX · SOLIQUA 100/33 · SPIRIVA RESPIMAT · STIOLTO RESPIMAT · SYMBICORT · TOUJEO · TRADJENTA · TRELEGY ELLIPTA · TZIELD · Tresiba · Trintellix · Utibron · VOQUEZNA · VRAYLAR · Vascepa · Veltassa · Victoza · WATCHMAN · WATCHMAN Access System · XARELTO · XIFAXAN · 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
Internal medicine physicians in nearby ZIP areas
961
County median income
$83,178
Nearest hospital to ZIP centroid (approximate)
MERCY HEALTH - CLERMONT HOSPITAL
0.0 mi
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. Hariharan is a clinical cardiology specialist, with above-average Medicare volume (top 13% in OH), with 21 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. Hariharan experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Hariharan performed 338 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. Hariharan receive payments from pharmaceutical companies?
Yes. Dr. Hariharan received a total of $2,371 from 30 companies across 139 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. Hariharan's costs compare to other internal medicine physicians in Batavia?
Dr. Hariharan's average Medicare payment per service is $75. 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. Hariharan) 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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