Medicare Enrolled
Dr. Daniel Callahan, M.D.
Pulmonary Disease · Alpharetta, GA
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. Callahan 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. Callahan
Dr. Daniel Callahan is a pulmonary disease specialist in Alpharetta, GA, with 21 years of NPI registration. Based on federal Medicare data, Dr. Callahan performed 1,255 Medicare services across 1,049 unique beneficiaries.
Between the years covered by Open Payments, Dr. Callahan received a total of $15,101 from 62 pharmaceutical and/or device companies across 755 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in pulmonary disease. 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. Callahan 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 in practice
▲ Top 36% volume in GA
$15,101 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,255
Medicare services
Top 36% in GA for pulmonary disease
1,049
Unique beneficiaries
$70
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~60 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. |
317 | $66 | $273 |
| 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. |
161 | $91 | $387 |
| 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. |
121 | $91 | $344 |
| 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. |
93 | $62 | $234 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
90 | $33 | $171 |
| Home sleep test with portable monitor An unattended sleep study performed at home using a portable monitor that records breathing, heart rate, and oxygen levels. |
80 | $30 | $146 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
54 | $80 | $339 |
| Sleep study with continuous airway pressure, age 6+ A sleep study conducted in a sleep lab that monitors breathing and other body functions while administering continuous airway pressure. This test is performed on patients aged 6 years or older. |
51 | $90 | $367 |
| Sleep study in sleep lab (age 6+) An overnight test conducted in a sleep laboratory to monitor sleep patterns and bodily functions in patients aged 6 years or older. |
44 | $90 | $356 |
| 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. |
40 | $133 | $537 |
| 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. |
39 | $131 | $504 |
| Chest X-ray, 2 views An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall. |
32 | $22 | $102 |
| Expiratory airflow and volume test A test that measures the amount of air you can exhale and the speed at which you can breathe it out. It evaluates lung function by assessing expiratory airflow and volume. |
30 | $19 | $90 |
| Pulmonary gas exchange test A test to examine how well the lungs exchange gases. |
30 | $43 | $170 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
20 | $45 | $242 |
| Bronchial irrigation and suction for cell collection This procedure uses an endoscope to flush and suction the lung airways in order to collect cells for testing. |
19 | $104 | $586 |
| Airflow rate measurement test A test that measures the rate of airflow. This procedure assesses how quickly air moves. |
18 | $30 | $117 |
| Exercise-induced lung stress test A test performed to evaluate how the lungs function during physical exertion. It helps identify breathing difficulties or lung conditions that occur specifically when exercising. |
16 | $27 | $102 |
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 ↗$15,101
Total received (2018-2024)
Avg $2,157/year across 7 years
Top 14% in GA for pulmonary disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
62
Companies
755
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
$14,979 (99.2%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$122 (0.8%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,842
2023
$2,261
2022
$2,682
2021
$2,208
2020
$2,129
2019
$2,421
2018
$1,556
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
GlaxoSmithKline, LLC.
$416
AstraZeneca Pharmaceuticals LP
$244
Avadel CNS Pharmaceuticals, LLC
$103
Inspire Medical Systems, Inc.
$102
HARMONY BIOSCIENCES LLC
$99
GENZYME CORPORATION
$92
Amgen Inc.
$91
JAZZ PHARMACEUTICALS INC.
$85
Insmed, Inc.
$80
IDORSIA PHARMACEUTICALS US INC
$78
Regeneron Healthcare Solutions, Inc.
$60
ABBVIE INC.
$56
Takeda Pharmaceuticals U.S.A., Inc.
$51
Lundbeck LLC
$47
Electromed, Inc.
$45
Boehringer Ingelheim Pharmaceuticals, Inc.
$32
Tactile Systems Technology Inc
$23
La Jolla Pharmaceutical Company
$23
Philips North America LLC
$23
Baxter Healthcare
$21
Actelion Pharmaceuticals US, Inc.
$19
Pulmonx Corporation
$19
Mylan Specialty L.P.
$19
Resmed Corp
$16
Top 3 companies account for 41.4% of 2024 payments
All-time payments by company (2018-2024) ›
GlaxoSmithKline, LLC.
$2,495
Boehringer Ingelheim Pharmaceuticals, Inc.
$2,121
AstraZeneca Pharmaceuticals LP
$1,882
Mylan Specialty L.P.
$695
JAZZ PHARMACEUTICALS INC.
$653
Regeneron Healthcare Solutions, Inc.
$606
Actelion Pharmaceuticals US, Inc.
$419
GENZYME CORPORATION
$377
Insmed, Inc.
$377
Philips Electronics North America Corporation
$352
Sunovion Pharmaceuticals Inc.
$322
Amgen Inc.
$314
Harmony Biosciences LLC
$306
Takeda Pharmaceuticals U.S.A., Inc.
$281
Novo Nordisk Inc
$275
Grifols USA, LLC
$233
HARMONY BIOSCIENCES LLC
$203
PFIZER INC.
$196
Baxter Healthcare
$178
Axsome Therapeutics, Inc.
$177
Inspire Medical Systems, Inc.
$175
IDORSIA PHARMACEUTICALS US INC
$164
Teva Pharmaceuticals USA, Inc.
$141
Mallinckrodt Hospital Products Inc.
$134
Advanced Respiratory, Inc
$124
Eisai Inc.
$123
Gilead Sciences, Inc.
$119
Genentech USA, Inc.
$117
Electromed, Inc.
$117
EISAI INC.
$114
United Therapeutics Corporation
$108
Avadel CNS Pharmaceuticals, LLC
$103
Paratek Pharmaceuticals, Inc.
$85
Mallinckrodt Enterprises LLC
$74
Lundbeck LLC
$67
Resmed Corp
$64
UCB, Inc.
$60
Inogen, Inc.
$59
ABBVIE INC.
$56
Mallinckrodt LLC
$53
Janssen Pharmaceuticals, Inc
$48
AbbVie Inc.
$42
Merck Sharp & Dohme Corporation
$42
Shire North American Group Inc
$41
Inari Medical, Inc.
$37
Novartis Pharmaceuticals Corporation
$36
ARBOR PHARMACEUTICALS, INC.
$29
Circassia Pharmaceuticals Inc
$26
CSL Behring
$26
Ironshore Pharmaceuticals Inc.
$25
Tactile Systems Technology Inc
$23
La Jolla Pharmaceutical Company
$23
Philips North America LLC
$23
Merck Sharp & Dohme LLC
$22
Jazz Pharmaceuticals Inc.
$20
Pulmonx Corporation
$19
E.R. Squibb & Sons, L.L.C.
$18
Alexion Pharmaceuticals, Inc.
$18
Bayer HealthCare Pharmaceuticals Inc.
$18
MAYNE PHARMA INC.
$17
ADVANCED RESPIRATORY, INC
$16
EKOS Corporation
$16
Top 3 companies account for 43.0% of all-time payments
Associated products mentioned in payments ›
(5044) MCOT · (8874) inCourage · (AK6) Vest Therapy · ACTHAR · AIR 11 · AIRSENSE · ANORO · ANORO ELLIPTA · AREXVY · AVYCAZ · Adempas · AirDuo Digihaler · Arikayce · BELSOMRA · BREO · BREZTRI · BREZTRI AEROSPHERE · BROVANA · CHARTIS CATHETER · CINQAIR · DORYX · DS Cpap Auto Core · DUPIXENT · DUPIXENT DUPILUMAB INJECTION · Dayvigo · Dymista · EKOSONIC · ELIQUIS · Esbriet · FARXIGA · FASENRA · FLOWTRIEVER CATHETER · Flexitouch Plus · GIAPREZA · GLASSIA · HYQVIA · Hillrom - Life 2000 Ventilation System · Hillrom - Vest System Model 105 Home Care · Hillrom - Volara System · Horizant · IMFINZI · INOGEN ONE G5 OXYGEN CONCENTRATOR - BLUETOOTH · INSPIRE · JANUVIA · JARDIANCE · JORNAY PM · LONHALA MAGNAIR · LUMRYZ · NIOX VERO · NUCALA · NUZYRA · Neupro · OFEV · OPSUMIT · OPSUMIT MACITENTAN · ORENITRAM · Ozempic · PREVNAR 20 · Perforomist · Prolastin-C · Prolastin-C Liquid · QUVIVIQ · REXULTI · RYBELSUS · Respiratoriy Care Undiv · S · SMARTVEST · SPIRIVA RESPIMAT · STIOLTO RESPIMAT · SUNOSI · SYMBICORT · Sunosi · TAGRISSO · TEFLARO · TEZSPIRE · TRADJENTA · TRELEGY ELLIPTA · TUDORZA PRESSAIR · TYVASO · The Vest System Model 105 Home Care · Trilogy 100 · ULTOMIRIS · UPTRAVI · UTIBRON NEOHALER · Utibron · WAKIX · Wakix · Wellcentive Undiv · XARELTO · XOLAIR · XYREM · XYWAV · Xolair · Xyrem · YUPELRI · Yupelri · Zemaira · inCourage · myAir
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
Pulmonary diseases within 10 mi
113
Per 100K population
10.6
County median income
$91,490
Nearest hospital
EMORY JOHNS CREEK HOSPITAL
6.0 mi
6.0 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. Callahan is a clinical cardiology specialist, with moderate Medicare volume, with low-engagement industry engagement in the top 14% of GA peers, 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. Callahan experienced with office visit, established patient (20-29 min)?
Based on Medicare claims data, Dr. Callahan performed 317 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. Callahan receive payments from pharmaceutical companies?
Yes. Dr. Callahan received a total of $15,101 from 62 companies across 755 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. Callahan's costs compare to other pulmonary diseases in Alpharetta?
Dr. Callahan's average Medicare payment per service is $70. 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. Callahan) 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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