Medicare Enrolled
Dr. John Vassallo, M.D.
Internal Medicine · Howell, MI
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. Vassallo 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. Vassallo
Dr. John Vassallo is an internal medicine specialist in Howell, MI, with 20 years of NPI registration. Based on federal Medicare data, Dr. Vassallo performed 1,913 Medicare services across 1,428 unique beneficiaries.
Between the years covered by Open Payments, Dr. Vassallo received a total of $7,248 from 63 pharmaceutical and/or device companies across 453 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. 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. Vassallo 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 11% volume in MI
$7,248 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,913
Medicare services
Top 11% in MI for internal medicine
1,428
Unique beneficiaries
$74
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~96 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 |
|---|---|---|---|
| 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. |
446 | $74 | $250 |
| Initial nursing facility care, high complexity An initial visit by a healthcare provider to a patient in a nursing facility involving a high level of medical decision making, lasting at least 45 minutes. |
259 | $135 | $350 |
| 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. |
216 | $48 | $178 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
167 | $123 | $250 |
| Nursing facility visit, low complexity A daily follow-up visit for an existing patient in a nursing facility involving straightforward medical decision making. The visit requires at least 15 minutes of time if time is used to determine the level of care. |
166 | $50 | $145 |
| Annual depression screening | 152 | $16 | $35 |
| Initial nursing facility care, moderate complexity Initial care provided to a patient in a nursing facility with moderate medical decision making, taking at least 35 minutes. |
123 | $96 | $265 |
| Nursing facility visit, moderate complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves moderate medical decision making and takes at least 30 minutes. |
112 | $75 | $205 |
| Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 55 | $59 | $175 |
| Nursing facility visit, established patient, straightforward A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves straightforward medical decision making and lasts at least 10 minutes. |
34 | $28 | $90 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
32 | $10 | $35 |
| 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. |
25 | $89 | $330 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
23 | $119 | $355 |
| Nursing facility discharge management, more than 30 minutes This service involves care coordination and management activities performed by a healthcare professional to prepare a patient for discharge from a nursing facility. It requires more than 30 minutes of time spent on these activities. |
22 | $101 | $209 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
19 | $8 | $16 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
19 | $3 | $15 |
| 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. |
18 | $9 | $35 |
| 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. |
14 | $10 | $50 |
| Annual intensive behavioral therapy for cardiovascular disease, 15 minutes A yearly, in-person session focused on intensive behavioral therapy to help manage cardiovascular disease. The session lasts for 15 minutes and is conducted with the patient individually. |
11 | $25 | $55 |
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 ↗$7,248
Total received (2018-2024)
Avg $1,035/year across 7 years
Top 11% in MI for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
63
Companies
453
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
$7,197 (99.3%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$51 (0.7%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,083
2023
$1,355
2022
$1,278
2021
$1,020
2020
$746
2019
$815
2018
$950
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
AstraZeneca Pharmaceuticals LP
$216
Lexicon Pharmaceuticals, Inc.
$75
Bayer Healthcare Pharmaceuticals Inc.
$65
Lilly USA, LLC
$61
Abbott Laboratories
$54
UCB, Inc.
$50
SCPHARMACEUTICALS INC.
$48
Collegium Pharmaceutical, Inc.
$41
Nevro Corp.
$40
Boehringer Ingelheim Pharmaceuticals, Inc.
$39
Exact Sciences Corporation
$35
ABBVIE INC.
$32
Novo Nordisk Inc
$32
GlaxoSmithKline, LLC.
$31
SANOFI-AVENTIS U.S. LLC
$28
Teva Pharmaceuticals USA, Inc.
$27
Dexcom, Inc.
$25
Vanda Pharmaceuticals Inc.
$24
Neurocrine Biosciences, Inc.
$22
ABIOMED
$18
Janssen Pharmaceuticals, Inc
$16
Novartis Pharmaceuticals Corporation
$16
Ardelyx, Inc.
$16
SCILEX PHARMACEUTICALS INC.
$16
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)
$15
VivaQuant Inc, dba Rhythm Express
$14
Otsuka America Pharmaceutical, Inc.
$13
PFIZER INC.
$13
Top 3 companies account for 32.9% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$1,365
Novartis Pharmaceuticals Corporation
$456
Novo Nordisk Inc
$404
Vanda Pharmaceuticals Inc.
$385
Boehringer Ingelheim Pharmaceuticals, Inc.
$369
Janssen Pharmaceuticals, Inc
$295
SANOFI-AVENTIS U.S. LLC
$294
Amgen Inc.
$287
PFIZER INC.
$274
Lilly USA, LLC
$229
GlaxoSmithKline, LLC.
$204
Sunovion Pharmaceuticals Inc.
$168
AbbVie Inc.
$166
Amarin Pharma Inc.
$130
Merck Sharp & Dohme Corporation
$122
ABBVIE INC.
$112
Astellas Pharma US Inc
$101
Bayer Healthcare Pharmaceuticals Inc.
$100
IDORSIA PHARMACEUTICALS US INC
$97
Lexicon Pharmaceuticals, Inc.
$94
Nestle HealthCare Nutrition Inc.
$92
Biogen, Inc.
$80
Dexcom, Inc.
$80
Alkermes, Inc.
$78
Abbott Laboratories
$78
Teva Pharmaceuticals USA, Inc.
$76
E.R. Squibb & Sons, L.L.C.
$75
Bayer HealthCare Pharmaceuticals Inc.
$72
UCB, Inc.
$68
Neurocrine Biosciences, Inc.
$66
Exact Sciences Corporation
$52
Sumitomo Pharma America, Inc.
$51
Otsuka America Pharmaceutical, Inc.
$51
SCPHARMACEUTICALS INC.
$48
Neurelis, Inc.
$44
Collegium Pharmaceutical, Inc.
$41
Nevro Corp.
$40
Lundbeck LLC
$39
Xeris Pharmaceuticals, Inc.
$37
Allergan Inc.
$30
ACADIA Pharmaceuticals Inc
$29
Shire North American Group Inc
$26
Biohaven Pharmaceuticals, Inc.
$25
Eisai Inc.
$24
Radius Health, Inc.
$24
Acorda Therapeutics, Inc
$21
Merck Sharp & Dohme LLC
$19
SANOFI PASTEUR INC.
$19
ABIOMED
$18
Corium, LLC
$17
Esperion Therapeutics, Inc.
$16
Biohaven Pharmaceutical Holding Company Ltd.
$16
Ardelyx, Inc.
$16
UROVANT SCIENCES INC
$16
SCILEX PHARMACEUTICALS INC.
$16
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)
$15
VivaQuant Inc, dba Rhythm Express
$14
Kowa Pharmaceuticals America, Inc.
$13
Purdue Pharma L.P.
$13
Allergan, Inc.
$12
Circassia Pharmaceuticals Inc
$11
IBSA Pharma Inc.
$11
Takeda Pharmaceuticals U.S.A., Inc.
$10
Top 3 companies account for 30.7% of all-time payments
Associated products mentioned in payments ›
ABILIFY MAINTENA · ADUHELM · AIRSUPRA · AJOVY · APTIOM · AREXVY · Aimovig · Austedo XR · Azstarys · BELSOMRA · BOOSTRIX · BREO · BREZTRI · BREZTRI AEROSPHERE · Briviact · CAPLYTA · CHANTIX · CINQAIR · COMIRNATY · Cologuard Collection Kit · DIABETES - DISEASE · Dayvigo · Dexcom G6 Transmitter · ELIQUIS · EMGALITY · ENTRESTO · EVENITY · FANAPT · FARXIGA · FIASP · FLUZONE QUADRIVALENT NORTHERN HEMISPHERE · FREESTYLE LIBRE 2 · FREESTYLE LIBRE 3 · FUROSCIX · GEMTESA · GVOKE HYPOPEN · GVOKE PFS · HETLIOZ · IBSRELA · INBRIJA · INGREZZA · Impella · Inpefa · JANUVIA · JARDIANCE · Kerendia · LATUDA · LEQVIO · LONHALA MAGNAIR · LYRICA · Livalo · MOUNJARO · MYRBETRIQ · Myrbetriq · NEXLETOL · NUPLAZID · NURTEC ODT · Nayzilam · OFEV · Otezla · Ozempic · Prolia · QULIPTA · QUVIVIQ · REXULTI · RYBELSUS · Repatha · Rhythm Express · Rybelsus · SHINGRIX · SIVEXTRO · SOLIQUA · SOLIQUA 100/33 · STIOLTO RESPIMAT · SYMBICORT · SYMPROIC · Saxenda · Senza · TOUJEO · TRADJENTA · TRELEGY ELLIPTA · TRULICITY · TUDORZA PRESSAIR · TZIELD · Tirosint · Tresiba · Tymlos · UBRELVY · VALTOCO · VIAGRA · VIBERZI · VRAYLAR · VYVANSE · Vascepa · Veozah · Victoza · Vivitrol · Vyvanse · Wegovy · XARELTO · XTAMPZA · ZENPEP · ZTLido
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 (99%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Internal medicine physicians within 10 mi
982
Per 100K population
503.2
County median income
$101,315
Nearest hospital
TRINITY HEALTH LIVINGSTON HOSPITAL
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. Vassallo is a clinical cardiology specialist, with above-average Medicare volume (top 11% in MI), with low-engagement industry engagement in the top 11% of MI 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. Vassallo experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Vassallo performed 446 office visit, established patient (30-39 min) 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. Vassallo receive payments from pharmaceutical companies?
Yes. Dr. Vassallo received a total of $7,248 from 63 companies across 453 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. Vassallo's costs compare to other internal medicine physicians in Howell?
Dr. Vassallo's average Medicare payment per service is $74. 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. Vassallo) 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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