Medicare Enrolled
Dr. Maria Pilar Elisa Dayaw, MD
Neurology · Hopedale, MA
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. Dayaw 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. Dayaw
Dr. Maria Pilar Elisa Dayaw is a neurology specialist in Hopedale, MA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Dayaw performed 873 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Dayaw received a total of $329,193 from 87 pharmaceutical and/or device companies across 1811 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. Dayaw 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.
✓ 19 years of NPI registration
▲ Top 17% volume in MA
$329,193 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗873
Medicare services
Top 17% in MA for neurology
Not available
Unique patients (not deduplicated)
$124
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, 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. |
610 | $133 | $445 |
| New patient office visit, complex (60-74 min) | 67 | $167 | $634 |
| 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. |
52 | $95 | $332 |
| Limited needle EMG of arm or leg muscles A test that measures the electrical activity in specific muscles of the arm or leg using a needle electrode. This limited study evaluates muscle function in a targeted area. |
50 | $51 | $930 |
| Injection, methylprednisolone acetate, 40 mg | 18 | $6 | $70 |
| Trigger point injection, 1-2 muscles A procedure involving the injection of medication into one or two specific muscles to treat trigger points. |
17 | $43 | $185 |
| 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. |
17 | $67 | $225 |
| Nerve conduction study, 9-10 studies A diagnostic test that measures how well nerves send electrical signals. It involves performing 9 to 10 separate nerve conduction studies to evaluate nerve function. |
15 | $174 | $900 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
14 | $81 | $200 |
| Assessment of and care planning for patient with impaired thought processing, typically 60 minutes | 13 | $216 | $550 |
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 ↗$329,193
Total received (2018-2024)
Avg $47,028/year across 7 years
Top 2% in MA for neurology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
87
Companies
1,811
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
$25,681
2023
$53,742
2022
$41,024
2021
$54,744
2020
$43,407
2019
$54,119
2018
$56,476
Payments by company (2024)
Eisai Inc.
$11,810
Celgene Corporation
$4,028
E.R. Squibb & Sons, L.L.C.
$1,683
ANI Pharmaceuticals, Inc.
$1,020
EMD Serono, Inc.
$973
ABBVIE INC.
$815
MDD US Operations, LLC
$716
Lundbeck LLC
$560
Novartis Pharmaceuticals Corporation
$497
Alexion Pharmaceuticals, Inc.
$298
Mallinckrodt Hospital Products Inc.
$292
GENZYME CORPORATION
$257
UCB, Inc.
$257
PFIZER INC.
$242
Merz Pharmaceuticals, LLC
$226
CSL Behring
$225
Amneal Pharmaceuticals LLC
$221
Lilly USA, LLC
$188
Teva Pharmaceuticals USA, Inc.
$186
SK Life Science, Inc.
$175
Otsuka America Pharmaceutical, Inc.
$117
TG Therapeutics, Inc.
$97
ACADIA Pharmaceuticals Inc
$86
Axsome Therapeutics, Inc.
$78
Grifols USA, LLC
$60
Inspire Medical Systems, Inc.
$60
CATALYST PHARMACEUTICALS, INC.
$50
SCILEX PHARMACEUTICALS INC.
$50
Takeda Pharmaceuticals U.S.A., Inc.
$49
Genentech USA, Inc.
$48
Vanda Pharmaceuticals Inc.
$45
MITSUBISHI TANABE PHARMA AMERICA, INC.
$45
Life Molecular Imaging Ltd
$39
Biogen, Inc.
$34
GE HEALTHCARE
$28
InSightec,Inc
$23
Amgen Inc.
$23
ARGENX US, INC.
$23
Corium, LLC
$22
Kedrion Biopharma, Inc.
$21
Medtronic, Inc.
$15
Top 3 companies account for 68.2% of 2024 payments
All-time payments by company (2018-2024) ›
EMD Serono, Inc.
$91,632
Biogen, Inc.
$70,633
GENZYME CORPORATION
$60,469
Genentech USA, Inc.
$17,839
E.R. Squibb & Sons, L.L.C.
$17,526
Celgene Corporation
$14,073
Eisai Inc.
$12,212
ANI Pharmaceuticals, Inc.
$11,836
Teva Pharmaceuticals USA, Inc.
$5,338
TG THERAPEUTICS, INC.
$4,130
Lundbeck LLC
$2,197
Novartis Pharmaceuticals Corporation
$2,076
NOVARTIS PHARMACEUTICALS CORPORATION
$1,880
ABBVIE INC.
$1,220
SK Life Science, Inc.
$963
MDD US Operations, LLC
$941
UCB, Inc.
$791
CSL Behring
$790
Acorda Therapeutics, Inc
$718
PFIZER INC.
$677
AbbVie Inc.
$676
Alexion Pharmaceuticals, Inc.
$649
Supernus Pharmaceuticals, Inc.
$639
Janssen Pharmaceuticals, Inc
$530
Lilly USA, LLC
$513
Mallinckrodt Enterprises LLC
$501
Sunovion Pharmaceuticals Inc.
$493
Mallinckrodt Hospital Products Inc.
$489
Amneal Pharmaceuticals LLC
$480
Alnylam Pharmaceuticals Inc.
$411
Mallinckrodt LLC
$371
Merz Pharmaceuticals, LLC
$327
Biohaven Pharmaceuticals, Inc.
$313
Amgen Inc.
$311
Neurocrine Biosciences, Inc.
$298
EISAI INC.
$260
Biohaven Pharmaceutical Holding Company Ltd.
$251
Allergan, Inc.
$242
ACADIA Pharmaceuticals Inc
$230
Grifols USA, LLC
$205
IDORSIA PHARMACEUTICALS US INC
$187
Adamas Pharmaceuticals, Inc.
$184
IMPEL PHARMACEUTICALS INC.
$182
Axsome Therapeutics, Inc.
$172
US WorldMeds, LLC
$171
Otsuka America Pharmaceutical, Inc.
$165
Neurelis, Inc.
$161
Avanir Pharmaceuticals, Inc.
$124
Kyowa Kirin, Inc.
$107
ARBOR PHARMACEUTICALS, INC.
$102
Upsher-Smith Laboratories LLC
$97
TG Therapeutics, Inc.
$97
MITSUBISHI TANABE PHARMA AMERICA, INC.
$86
Horizon Therapeutics plc
$84
Takeda Pharmaceuticals U.S.A., Inc.
$78
GE HEALTHCARE
$72
Allergan Inc.
$69
ARGENX US, INC.
$67
Bayer HealthCare Pharmaceuticals Inc.
$64
Life Molecular Imaging Ltd
$62
Inspire Medical Systems, Inc.
$60
Almatica Pharma LLC
$53
CATALYST PHARMACEUTICALS, INC.
$50
SCILEX PHARMACEUTICALS INC.
$50
Vanda Pharmaceuticals Inc.
$45
GE HealthCare
$45
Avion Pharmaceuticals
$36
LivaNova USA, Inc.
$33
Impax Laboratories, Inc.
$32
Greenwich Biosciences, Inc.
$25
Amylyx Pharmaceuticals, Inc.
$24
InSightec,Inc
$23
SANOFI-AVENTIS U.S. LLC
$22
Corium, LLC
$22
Exeltis, USA Inc.
$22
Kedrion Biopharma, Inc.
$21
JAZZ PHARMACEUTICALS INC.
$20
ASSERTIO THERAPEUTICS, Inc.
$20
Catalyst Pharmaceuticals, Inc.
$19
Assertio Therapeutics, Inc.
$16
Medtronic, Inc.
$15
Bausch Health US, LLC
$15
Egalet US Inc
$14
Azurity Pharmaceuticals, Inc.
$14
Mylan Pharmaceuticals Inc.
$13
Zyla Life Sciences
$13
Mitsubishi Tanabe Pharma America, Inc.
$12
Top 3 companies account for 67.7% of all-time payments
Associated products mentioned in payments ›
ACTHAR · ADUHELM · AIMOVIG · AJOVY · AMPYRA · AMVUTTRA · AMYVID · APLENZIN · APOKYN · APTIOM · AUBAGIO · AUSTEDO · AVONEX · Aimovig · Albuked · Apokyn · Austedo XR · Azstarys · BOTOX · BOTOX - NEUROLOGY · BOTOX THERAPEUTIC · BRIUMVI · Betaseron · Briviact · COMIRNATY · COPAXONE · Cambia · DUOPA · Dhivy · EMGALITY · Edarbyclor · Enspryng · Epidiolex · Exablate · FYCOMPA · Fycompa · GAMMAGARD · GILENYA · GOCOVRI · GRALISE · Gamunex-C · Glatiramer Acetate · Gocovri · HYQVIA · Hizentra · Horizant · INBRIJA · INGREZZA · INSPIRE · KESIMPTA · KISUNLA · KYNMOBI · LEMTRADA · LYRICA · LYVISPAH · Leqembi · MAVENCLAD · MAYZENT · MYOBLOC · Mavenclad · NAMZARIC · NEURACEQ · NORTHERA · NOURIANZ · NUEDEXTA · NUPLAZID · NURTEC ODT · Nayzilam · Nourianz · OCREVUS · OCTAGAM IMMUNE GLOBULIN (HUMAN) · ONGENTYS · ONGENTYS 50MG CAPSULES 30 · ONPATTRO · OXTELLAR XR · Ocrevus · Ongentys · Ozanimod · PANZYGA · PAXLOVID · PERCEPT PC BRAINSENSE · PLEGRIDY · PONVORY · PURIFIED CORTROPHIN GEL · Ponvory · Privigen · QULIPTA · QUVIVIQ · RADICAVA · RELYVRIO · REXULTI · REYVOW · RYTARY · Radicava · Rebif · Rystiggo · SKYCLARYS · SOLIRIS · SPRIX · SUNOSI · Sunosi · TECFIDERA · TOSYMRA SUMATRIPTAN NASAL SPRAY · TROKENDI XR · TYSABRI · Trudhesa · Tysabri · UBRELVY · ULTOMIRIS · UPLIZNA · VALTOCO · VNS THERAPY SENTIVA MODEL 1000 GENERATOR · VNS Therapy · VRAYLAR · VUMERITY · VYEPTI · VYVGART · VYVGART HYTRULO · Vimpat · XADAGO · XARELTO · XCOPRI · Xadago · Xeomin · ZAVZPRET · ZEPOSIA · ZTLido · Zilbrysq
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
Neurologists in nearby ZIP areas
200
County median income
$93,561
Nearest hospital to ZIP centroid (approximate)
MILFORD REGIONAL MEDICAL CENTER
2.5 mi
2.5 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. Dayaw is a clinical cardiology specialist, with above-average Medicare volume (top 17% in MA), with 19 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. Dayaw experienced with office visit, established patient, complex (40-54 min)?
Based on Medicare claims data, Dr. Dayaw performed 610 office visit, established patient, complex (40-54 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. Dayaw receive payments from pharmaceutical companies?
Yes. Dr. Dayaw received a total of $329,193 from 87 companies across 1,811 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. Dayaw's costs compare to other neurologists in Hopedale?
Dr. Dayaw's average Medicare payment per service is $124. 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. Dayaw) 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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