Medicare Enrolled
Dr. Alfred Heinser, MD
Internal Medicine · Groton, 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. Heinser 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. Heinser
Dr. Alfred Heinser is an internal medicine specialist in Groton, MA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Heinser performed 978 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Heinser received a total of $18,522 from 53 pharmaceutical and/or device companies across 891 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. Heinser 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 of NPI registration
▲ Top 28% volume in MA
$18,522 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗978
Medicare services
Top 28% in MA for internal medicine
Not available
Unique patients (not deduplicated)
$96
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 (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. |
327 | $69 | $367 |
| 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. |
183 | $100 | $444 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
149 | $142 | $455 |
| 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. |
93 | $180 | $578 |
| 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. |
44 | $151 | $615 |
| 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. |
33 | $12 | $113 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
33 | $34 | $125 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
33 | $1 | $10 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
30 | $72 | $210 |
| Initial preventive physical examination, new Medicare beneficiary A comprehensive preventive health visit for new Medicare beneficiaries during their first 12 months of enrollment. The service is conducted as a face-to-face visit and is limited to preventive care. |
22 | $181 | $562 |
| Home health plan of care certification Certification by a physician or allowed practitioner for Medicare-covered home health services under a home health plan of care. This includes contacting the home health agency and reviewing reports of patient status required by physicians. |
19 | $44 | $186 |
| 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. |
12 | $13 | $62 |
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 ↗$18,522
Total received (2018-2024)
Avg $2,646/year across 7 years
Top 9% in MA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
53
Companies
891
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
$2,850
2023
$2,262
2022
$1,988
2021
$2,824
2020
$2,621
2019
$3,202
2018
$2,774
Payments by company (2024)
Janssen Biotech, Inc.
$664
AstraZeneca Pharmaceuticals LP
$341
GlaxoSmithKline, LLC.
$310
Lilly USA, LLC
$218
Amgen Inc.
$174
PFIZER INC.
$163
UCB, Inc.
$139
Novo Nordisk Inc
$131
Sandoz Inc.
$119
Kiniksa Pharmaceuticals International, plc
$98
Astellas Pharma US Inc
$96
ABBVIE INC.
$82
Exact Sciences Corporation
$80
SCILEX PHARMACEUTICALS INC.
$57
Fresenius Kabi USA, LLC
$40
Phathom Pharmaceuticals, Inc.
$37
Mallinckrodt Hospital Products Inc.
$35
Novartis Pharmaceuticals Corporation
$28
E.R. Squibb & Sons, L.L.C.
$24
Ardelyx, Inc.
$17
Top 3 companies account for 46.1% of 2024 payments
All-time payments by company (2018-2024) ›
Janssen Biotech, Inc.
$2,903
PFIZER INC.
$2,247
GlaxoSmithKline, LLC.
$1,419
Amgen Inc.
$1,325
AstraZeneca Pharmaceuticals LP
$1,253
Lilly USA, LLC
$1,214
E.R. Squibb & Sons, L.L.C.
$1,147
ABBVIE INC.
$742
Merck Sharp & Dohme Corporation
$587
AbbVie Inc.
$585
Novo Nordisk Inc
$552
Janssen Pharmaceuticals, Inc
$535
Boehringer Ingelheim Pharmaceuticals, Inc.
$439
Horizon Therapeutics plc
$401
UCB, Inc.
$358
Novartis Pharmaceuticals Corporation
$240
Fresenius Kabi USA, LLC
$240
AbbVie, Inc.
$209
Astellas Pharma US Inc
$197
Endo Pharmaceuticals Inc.
$151
Exact Sciences Corporation
$145
Amarin Pharma Inc.
$137
Sandoz Inc.
$135
Mallinckrodt Hospital Products Inc.
$105
Kiniksa Pharmaceuticals International, plc
$98
Takeda Pharmaceuticals U.S.A., Inc.
$96
Celgene Corporation
$86
Janssen Scientific Affairs, LLC
$76
Horizon Pharma plc
$73
Regeneron Healthcare Solutions, Inc.
$71
Kowa Pharmaceuticals America, Inc.
$71
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$59
Antares Pharma, Inc.
$59
SCILEX PHARMACEUTICALS INC.
$57
Biohaven Pharmaceutical Holding Company Ltd.
$51
Gilead Sciences, Inc.
$48
Esperion Therapeutics, Inc.
$43
Eisai Inc.
$40
Phathom Pharmaceuticals, Inc.
$37
Teva Pharmaceuticals USA, Inc.
$35
SOBI, INC
$33
GENZYME CORPORATION
$29
Kiniksa Pharmaceuticals, Ltd.
$24
DERMIRA, INC.
$24
Lupin Inc.
$23
Sobi, Inc
$22
Genentech USA, Inc.
$20
Ardelyx, Inc.
$17
Ironwood Pharmaceuticals, Inc
$16
RedHill Biopharma Inc.
$13
SANOFI PASTEUR INC.
$13
Prometheus Laboratories Inc.
$11
Allergan Inc.
$10
Top 3 companies account for 35.5% of all-time payments
Associated products mentioned in payments ›
ACTHAR · AJOVY · AREXVY · Actemra · Aemcolo · Aimovig · Arcalyst · BENLYSTA · BREO · BREZTRI · BREZTRI AEROSPHERE · Bimzelx · CHANTIX · COLOGUARD · COLOGUARD DNA CAPTURE REAGENTS · COSENTYX · CYLTEZO · Cimzia · Cologuard Collection Kit · DUZALLO · Dayvigo · ELIQUIS · ENTRESTO · EVENITY · Enbrel · FARXIGA · FLUZONE HIGH-DOSE · FORTEO · GARDASIL 9 · HUMIRA · HYRIMOZ · Humira · IBSRELA · IDACIO · INVOKANA · JANUVIA · JARDIANCE · KEVZARA · KEVZARA SARILUMAB INJECTION · KRYSTEXXA · Kineret · LINZESS · LYRICA · Livalo · MOUNJARO · MYRBETRIQ · Myrbetriq · NASCOBAL · NEXLETOL · NUCALA · NURTEC ODT · OFEV · OLUMIANT · ORENCIA · Otezla · Otrexup · Ozempic · PNEUMOVAX 23 · PREVNAR - 13 · PREVNAR 13 · PREVNAR 20 · Prolia · QBREXZA · QULIPTA · QVAR · RENFLEXIS · RINVOQ · RYBELSUS · Repatha · Rinvoq · Rybelsus · SAPHNELO · SHINGRIX · SILTEX Breast Implants · SIMPONI · SIMPONI ARIA · SKYRIZI · SOLOSEC · SPIRIVA RESPIMAT · STELARA · STIOLTO RESPIMAT · SYMBICORT · Saxenda · TALTZ · TREMFYA · TRULICITY · Tavneos · Trintellix · UBRELVY · VIAGRA · VOQUEZNA · VRAYLAR · Vascepa · Veozah · Wegovy · XALATAN · XARELTO · XELJANZ · XIFAXAN · ZTLido
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
Internal medicine physicians in nearby ZIP areas
1,287
County median income
$126,779
Nearest hospital to ZIP centroid (approximate)
NASHOBA VALLEY MEDICAL CENTER
3.2 mi
3.2 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. Heinser is a clinical cardiology specialist, with above-average Medicare volume (top 28% in MA), 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. Heinser experienced with office visit, established patient (20-29 min)?
Based on Medicare claims data, Dr. Heinser performed 327 office visit, established patient (20-29 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. Heinser receive payments from pharmaceutical companies?
Yes. Dr. Heinser received a total of $18,522 from 53 companies across 891 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. Heinser's costs compare to other internal medicine physicians in Groton?
Dr. Heinser's average Medicare payment per service is $96. 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. Heinser) 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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