Medicare Enrolled
Dr. David Hammack, P.A.
Physician Assistant · Fayetteville, NY
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. Hammack 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. Hammack
Dr. David Hammack is a physician assistant in Fayetteville, NY, with 13 years of NPI registration. Based on federal Medicare data, Dr. Hammack performed 2,084 Medicare services across 1,618 unique beneficiaries.
Between the years covered by Open Payments, Dr. Hammack received a total of $4,421 from 30 pharmaceutical and/or device companies across 267 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in physician assistant. 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. Hammack 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.
✓ 13 years in practice
▲ Top 3% volume in NY
$4,421 industry payments
Medicare Practice Summary
Medicare Utilization ↗2,084
Medicare services
Top 3% in NY for physician assistant
1,618
Unique beneficiaries
$32
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~160 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 (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. |
245 | $46 | $178 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
225 | $6 | $6 |
| 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. |
215 | $57 | $255 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
213 | $10 | $23 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
207 | $8 | $17 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
201 | $13 | $30 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
180 | $16 | $37 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
141 | $104 | $259 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
93 | $10 | $22 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
61 | $9 | $20 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
54 | $29 | $66 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
48 | $30 | $35 |
| Flu vaccine, quadrivalent A flu shot containing four strains of the influenza virus to help prevent seasonal influenza infection. |
32 | $76 | $120 |
| 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 | $282 | $300 |
| Pneumonia vaccine administration This procedure involves the injection of a vaccine to protect against pneumococcal disease. It is administered by a healthcare provider. |
22 | $30 | $35 |
| Iron level test | 16 | $6 | $14 |
| Transitional care management services, moderate complexity Services provided to coordinate care during the transition from an inpatient or other facility setting back to the community. This includes follow-up and management of a health problem of at least moderate complexity. |
16 | $125 | $404 |
| Urine culture, bacterial identification A laboratory test that grows and identifies bacteria from a urine sample to detect infections. |
15 | $8 | $18 |
| Urinalysis with microscopic exam A urine test performed manually that includes examining the sample under a microscope to check for abnormalities. |
14 | $3 | $7 |
| Iron binding capacity test A blood test that measures the amount of iron in the blood and the blood's ability to bind and transport iron. |
14 | $9 | $19 |
| 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 | $8 | $29 |
| 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. |
13 | $22 | $44 |
| PSA test (prostate cancer screening) A blood test that measures the level of prostate-specific antigen to screen for prostate cancer. |
12 | $19 | $41 |
| 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. |
11 | $122 | $329 |
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 ↗$4,421
Total received (2021-2024)
Avg $1,105/year across 4 years
Top 7% in NY for physician assistant
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
30
Companies
267
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
$4,409 (99.7%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$12 (0.3%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,591
2023
$2,247
2022
$355
2021
$229
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$275
Lilly USA, LLC
$198
PFIZER INC.
$182
Astellas Pharma US Inc
$172
Abbott Laboratories
$138
GlaxoSmithKline, LLC.
$134
Merck Sharp & Dohme LLC
$69
Exact Sciences Corporation
$67
Novo Nordisk Inc
$65
Lundbeck LLC
$47
Amgen Inc.
$47
AstraZeneca Pharmaceuticals LP
$44
Novartis Pharmaceuticals Corporation
$31
Insulet Corporation
$25
SHIELD THERAPEUTICS INC
$18
Sumitomo Pharma America, Inc.
$16
Boston Scientific Corporation
$16
Axsome Therapeutics, Inc.
$16
Otsuka America Pharmaceutical, Inc.
$15
Boehringer Ingelheim Pharmaceuticals, Inc.
$15
Top 3 companies account for 41.2% of 2024 payments
All-time payments by company (2021-2024) ›
ABBVIE INC.
$741
PFIZER INC.
$489
Astellas Pharma US Inc
$466
GlaxoSmithKline, LLC.
$435
Abbott Laboratories
$351
Lilly USA, LLC
$347
Novo Nordisk Inc
$317
Boehringer Ingelheim Pharmaceuticals, Inc.
$168
Exact Sciences Corporation
$156
Otsuka America Pharmaceutical, Inc.
$129
Merck Sharp & Dohme LLC
$100
Shield Therapeutics Inc
$94
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$70
AstraZeneca Pharmaceuticals LP
$69
Amgen Inc.
$61
E.R. Squibb & Sons, L.L.C.
$58
IDORSIA PHARMACEUTICALS US INC
$53
Lundbeck LLC
$47
Takeda Pharmaceuticals U.S.A., Inc.
$36
Novartis Pharmaceuticals Corporation
$31
IBSA Pharma Inc.
$29
Bayer Healthcare Pharmaceuticals Inc.
$27
Insulet Corporation
$25
AbbVie Inc.
$20
Amarin Pharma Inc.
$18
SANOFI-AVENTIS U.S. LLC
$18
SHIELD THERAPEUTICS INC
$18
Sumitomo Pharma America, Inc.
$16
Boston Scientific Corporation
$16
Axsome Therapeutics, Inc.
$16
Top 3 companies account for 38.4% of all-time payments
Associated products mentioned in payments ›
ACCRUFER · AIRSUPRA · AREXVY · Auvelity · BEXSERO · BREZTRI · COMIRNATY · CREON · Cologuard Collection Kit · ELIQUIS · EMGALITY · EVENITY · FARXIGA · FREESTYLE LIBRE · FREESTYLE LIBRE 2 · FREESTYLE LIBRE 3 · GARDASIL · GARDASIL 9 · GEMTESA · JARDIANCE · Kerendia · LEQVIO · LICART · LINZESS · MENVEO · MOUNJARO · MYRBETRIQ · Myrbetriq · NUEDEXTA · NURTEC ODT · Omnipod · Otezla · Ozempic · PAXLOVID · PREVNAR 20 · QULIPTA · QUVIVIQ · REXULTI · Rybelsus · SHINGRIX · SOLIQUA 100/33 · STIOLTO RESPIMAT · SYNTHROID · Saxenda · TRADJENTA · TRELEGY ELLIPTA · TRINTELLIX · UBRELVY · VIBERZI · VRAYLAR · Vascepa · Veozah · WATCHMAN FLX · Wegovy · XIFAXAN
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. Total industry engagement is in the top 7% for physician assistant in NY.
Geographic Context
Physician assistants within 10 mi
492
Per 100K population
104.3
County median income
$74,740
Nearest hospital
CROUSE HOSPITAL
6.3 mi
6.3 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. Hammack is a clinical cardiology specialist, with above-average Medicare volume (top 3% in NY), with low-engagement industry engagement in the top 7% of NY peers.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Hammack experienced with office visit, established patient (20-29 min)?
Based on Medicare claims data, Dr. Hammack performed 245 office visit, established patient (20-29 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. Hammack receive payments from pharmaceutical companies?
Yes. Dr. Hammack received a total of $4,421 from 30 companies across 267 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. Hammack's costs compare to other physician assistants in Fayetteville?
Dr. Hammack's average Medicare payment per service is $32. 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. Hammack) 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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