Medicare Enrolled
Dr. Nagender Mankan, M.D.
Hematology & Oncology · Roswell, 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. Mankan 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. Mankan
Dr. Nagender Mankan is a hematology & oncology specialist in Roswell, GA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Mankan performed 811 Medicare services across 511 unique beneficiaries.
Between the years covered by Open Payments, Dr. Mankan received a total of $12,264 from 68 pharmaceutical and/or device companies across 506 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hematology & oncology. 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. Mankan 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 42% volume in GA
$12,264 industry payments
Medicare Practice Summary
Medicare Utilization ↗811
Medicare services
Top 42% in GA for hematology & oncology
511
Unique beneficiaries
$74
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~41 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. |
438 | $72 | $280 |
| 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. |
125 | $47 | $199 |
| 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. |
51 | $95 | $253 |
| 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. |
47 | $62 | $178 |
| 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. |
41 | $102 | $341 |
| 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. |
38 | $99 | $384 |
| 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. |
38 | $140 | $442 |
| 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. |
19 | $27 | $123 |
| 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. |
14 | $91 | $382 |
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 ↗$12,264
Total received (2018-2024)
Avg $1,752/year across 7 years
Top 26% in GA for hematology & oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
68
Companies
506
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
$9,504 (77.5%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$2,760 (22.5%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,713
2023
$3,537
2022
$2,046
2021
$908
2020
$754
2019
$2,831
2018
$476
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Daiichi Sankyo Inc.
$225
PFIZER INC.
$220
AstraZeneca Pharmaceuticals LP
$212
Genentech USA, Inc.
$156
ABBVIE INC.
$131
Merck Sharp & Dohme LLC
$83
Gilead Sciences, Inc.
$73
E.R. Squibb & Sons, L.L.C.
$66
Stemline Therapeutics Inc.
$53
Eisai Inc.
$53
BeiGene USA, Inc.
$45
Regeneron Healthcare Solutions, Inc.
$34
Genmab U.S., Inc.
$30
GlaxoSmithKline, LLC.
$29
Acrotech Biopharma Inc.
$27
PharmaEssentia USA Corporation
$26
Fennec Pharmaceuticals, Inc.
$24
Mirati Therapeutics, Inc.
$24
JAZZ PHARMACEUTICALS INC.
$24
PUMA BIOTECHNOLOGY, INC.
$23
Takeda Pharmaceuticals U.S.A., Inc.
$22
Celgene Corporation
$21
Astellas Pharma US Inc
$21
Novartis Pharmaceuticals Corporation
$21
SOBI, INC
$20
Janssen Biotech, Inc.
$17
Alexion Pharmaceuticals, Inc.
$17
Karyopharm Therapeutics Inc.
$15
Top 3 companies account for 38.3% of 2024 payments
All-time payments by company (2018-2024) ›
CTI BioPharma Corp.
$1,761
Daiichi Sankyo Inc.
$869
AstraZeneca Pharmaceuticals LP
$858
Amgen Inc.
$710
Genentech USA, Inc.
$587
Celgene Corporation
$533
Novartis Pharmaceuticals Corporation
$513
Janssen Biotech, Inc.
$458
Merck Sharp & Dohme Corporation
$410
PFIZER INC.
$368
Astellas Pharma US Inc
$359
Incyte Corporation
$348
Seagen Inc.
$333
E.R. Squibb & Sons, L.L.C.
$296
Exelixis Inc.
$292
Merck Sharp & Dohme LLC
$250
Alexion Pharmaceuticals, Inc.
$204
ABBVIE INC.
$203
Regeneron Healthcare Solutions, Inc.
$202
Bayer HealthCare Pharmaceuticals Inc.
$201
Gilead Sciences, Inc.
$192
Boehringer Ingelheim Pharmaceuticals, Inc.
$138
GENZYME CORPORATION
$131
Karyopharm Therapeutics Inc.
$125
GlaxoSmithKline, LLC.
$117
Takeda Pharmaceuticals U.S.A., Inc.
$112
JAZZ PHARMACEUTICALS INC.
$111
Eisai Inc.
$110
Pharmacyclics LLC, An AbbVie Company
$100
Pharmacyclics LLC, an AbbVie Company
$99
Seattle Genetics, Inc.
$99
AMAG Pharmaceuticals, Inc.
$68
BeiGene USA, Inc.
$64
EISAI INC.
$64
Partner Therapeutics, Inc.
$63
Mirati Therapeutics, Inc.
$62
TerSera Therapeutics LLC
$60
Stemline Therapeutics Inc.
$53
TESARO, Inc.
$49
Rigel Pharmaceuticals, Inc.
$42
Lilly USA, LLC
$42
Epizyme, Inc.,
$36
AbbVie, Inc.
$33
Foundation Medicine, Inc.
$33
ARRAY BIOPHARMA INC
$31
Genmab U.S., Inc.
$30
Curium US LLC
$30
Heron Therapeutics, Inc.
$28
Acrotech Biopharma Inc.
$27
PharmaEssentia USA Corporation
$26
Fennec Pharmaceuticals, Inc.
$24
PUMA BIOTECHNOLOGY, INC.
$23
Clovis Oncology, Inc.
$22
Epizyme, Inc.
$22
SOBI, INC
$20
Bayer Healthcare Pharmaceuticals Inc.
$20
MACROGENICS, INC.
$19
Taiho Oncology, Inc.
$19
Coherus Biosciences Inc.
$18
SECURA BIO, INC.
$18
Sobi, Inc
$18
INSYS Therapeutics Inc
$18
Kite Pharma, Inc.
$17
Servier Pharmaceuticals LLC
$16
Advanced Accelerator Applications
$16
Organon LLC
$15
Kyowa Kirin, Inc.
$15
Puma Biotechnology, Inc.
$13
Top 3 companies account for 28.4% of all-time payments
Associated products mentioned in payments ›
ADAKVEO · ADCETRIS · ALUNBRIG · AUGTYRO · Abraxane · Alecensa · Aliqopa · Avastin · BESREMI · BLENREP · BOSULIF · BRAFTOVI · BRUKINSA · CABOMETYX · CALQUENCE · CERDELGA · CINVANTI · COPIKTRA · CYRAMZA · Cabometyx · Columvi · DARZALEX · DOPTELET · Detectnet · ELAHERE · ELIQUIS · ELITEK · ELREXFIO · ENHERTU · EPKINLY · ERLEADA · Enhertu · Epkinly · Erleada · FARESTON · FASLODEX · FERAHEME · FOUNDATIONONE LIQUID CDX · FRUZAQLA · Fabhalta · GAUCHER-DISEASE · GAZYVA · GILOTRIF · Gazyva · Herceptin · IBRANCE · ICLUSIG · IMBRUVICA · IMFINZI · INJECTAFER · INLYTA · Imbruvica · Inrebic · JAKAFI · JEMPERLI · JEVTANA · KANJINTI · KEYTRUDA · KISQALI · KRAZATI · Kyprolis · LIBTAYO · LUMAKRAS · LYNPARZA · Lenvima · Leukine · Lonsurf · Lutathera · MARGENZA · MEKINIST · MONJUVI · MVASI · NINLARO · Nerlynx · Neulasta · Nplate · Nubeqa · ONUREG · OPDIVO · OPDUALAG · OXBRYTA · Orserdu · PADCEV · PROMACTA · Padcev · Pedmark · Phesgo · Pomalyst · Prolia · REBLOZYL · RYBREVANT · RYZNEUTA · Revlimid · Rubraca · SANDOSTATIN · SUBSYS · Soliris · Stivarga · TAGRISSO · TASIGNA · TAZVERIK · TECENTRIQ · TIBSOVO · TIVDAK · TUKYSA · Tavalisse · Tazverik · Trodelvy · ULTOMIRIS · Udenyca · VENCLEXTA · VERZENIO · Venclexta · Vitrakvi · Vonjo · XALKORI · XGEVA · XPOVIO · XTANDI · Xermelo · Xofigo · Xospata · ZEJULA · ZEPZELCA · ZOLADEX
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 (78%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Hematology & oncology specialists within 10 mi
166
Per 100K population
15.5
County median income
$91,490
Nearest hospital
WELLSTAR NORTH FULTON 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. Mankan is a clinical cardiology specialist, with moderate Medicare volume, 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. Mankan experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Mankan performed 438 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. Mankan receive payments from pharmaceutical companies?
Yes. Dr. Mankan received a total of $12,264 from 68 companies across 506 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. Mankan's costs compare to other hematology & oncology specialists in Roswell?
Dr. Mankan'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. Mankan) 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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