Dr. Edwin Brooke Knights , MD
Internal Medicine • Acton, MA
321 Main St
Acton, MA 017203718
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Edwin Knights is listed in NPPES under Internal Medicine.
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NPI assigned on October 14, 2005; this date does not establish years in practice.
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Published CMS data list 2,549 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 95165 — Professional service for preparation and provision of 1 or more antigens: 288 service units.
- 36415 — Insertion of needle into vein for collection of blood sample: 283 service units.
- 99214 — Established patient outpatient office visit: 236 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2021 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2022). CPT notice
See all 34 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 684 Medicare Part D prescriptions, including refills, in 2023.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2023. Published rows only; this is not a quality measure.
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Published Part D records, 2023:
- Atorvastatin Calcium — 152 prescription fills, including refills.
- Hydrochlorothiazide — 69 prescription fills, including refills.
- Lisinopril — 64 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2023. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 22 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 4,076 in 2018 to 2,549 in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018–2022.
Practice Location & Contact Primary Location
321 Main St
Acton, MA 017203718
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $88,426 in 2022
The total amount Medicare approved for these services in 2022. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022.
Paid by Medicare
About $66,878 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022.
30-day fills
1,808 standardized 30-day fills in 2023
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$12,492 in 2023
The total cost of these prescriptions in 2023, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2023.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $30.06 in 2020
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2020.
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Acton and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Knights are from 2022.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Knights are from 2023.
17 active clinicians are listed under Internal Medicine with a practice address in Acton, MA (6,830 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Acton
52.9% of these 17 clinicians have the CMS telehealth indicator.
64.7% of these 17 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 37% from 4,076 in 2018 to 2,549 in 2022.
- 2018: 4,076
- 2019: 4,481
- 2020: 3,349
- 2021: 3,692
- 2022: 2,549
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Medicare-allowed amount
Medicare-allowed amount decreased 25% from $118,173 in 2018 to $88,426 in 2022.
- 2018: $118,173
- 2019: $129,948
- 2020: $99,530
- 2021: $122,971
- 2022: $88,426
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Paid by Medicare
Paid by Medicare decreased 27% from $91,635 in 2018 to $66,878 in 2022.
- 2018: $91,635
- 2019: $102,153
- 2020: $77,171
- 2021: $99,914
- 2022: $66,878
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 86% from 4,977 in 2019 to 684 in 2023.
- 2019: 4,977
- 2020: 4,950
- 2021: 4,433
- 2022: 4,093
- 2023: 684
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30-day fills
30-day fills decreased 84% from 11,630 in 2019 to 1,808 in 2023.
- 2019: 11,630
- 2020: 12,061
- 2021: 11,298
- 2022: 10,624
- 2023: 1,808
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Part D drug cost
Part D drug cost decreased 96% from $302,858 in 2019 to $12,492 in 2023.
- 2019: $302,858
- 2020: $315,314
- 2021: $234,476
- 2022: $207,764
- 2023: $12,492
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2020 only.
Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Medicare Part D Prescribers (2023), CMS Open Payments (2020), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2020 (payments made January 1 – December 31, 2020): fewer than 11 records totaling $30.06.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Pfizer Inc. |
Education
In-kind items and services
|
CHANTIX | General | $30.06 |
Source: CMS Open Payments, program year 2020, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2021 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2022; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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95165
Professional service for preparation and provision of 1 or more antigens
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288 | 14 | $30.00 | $18.81 |
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36415
Insertion of needle into vein for collection of blood sample
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283 | 160 | $6.00 | $2.97 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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236 | 140 | $243.00 | $144.90 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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152 | 117 | $22.00 | $7.69 |
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95117
Professional service for multiple injections of allergen
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142 | 20 | $30.00 | $14.10 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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135 | 98 | $165.00 | $102.61 |
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80048
Blood test, basic group of blood chemicals (calcium, total)
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128 | 92 | $24.00 | $8.37 |
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80061
Blood test, lipids (cholesterol and triglycerides)
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91 | 87 | $38.00 | $13.25 |
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82042
Cerebrospinal fluid, or amniotic fluid albumin (protein) level
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91 | 81 | $15.00 | $7.70 |
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82570
Creatinine level to test for kidney function or muscle injury
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91 | 81 | $48.00 | $5.13 |
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83036
Hemoglobin a1c level
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84 | 52 | $28.00 | $9.61 |
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80053
Blood test, comprehensive group of blood chemicals
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76 | 68 | $30.00 | $10.44 |
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82306
Vitamin d-3 level
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58 | 51 | $84.00 | $29.38 |
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81003
Automated urinalysis test
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56 | 51 | $7.00 | $2.22 |
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90732
Pneumococcal vaccine, 23-valent
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53 | 53 | $138.00 | $132.54 |
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G0009
Administration of pneumococcal vaccine
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49 | 49 | $58.00 | $31.22 |
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99211
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
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48 | 18 | $46.00 | $27.31 |
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90662
Influenza vaccine split virus, preservative free
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47 | 47 | $112.00 | $68.33 |
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85610
Blood test, clotting time
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46 | 12 | $11.00 | $4.25 |
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G0008
Administration of influenza virus vaccine
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46 | 46 | $58.00 | $30.84 |
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77080
Dxa bone density measurement of hip, pelvis, spine
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38 | 30 | $159.58 | $29.35 |
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82962
Blood glucose (sugar) test performed by hand-held instrument
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34 | 22 | $7.00 | $3.24 |
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83970
Parathormone (parathyroid hormone) level
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34 | 29 | $117.00 | $40.81 |
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84443
Blood test, thyroid stimulating hormone (tsh)
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33 | 29 | $48.00 | $16.62 |
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84100
Phosphate level
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32 | 27 | $13.00 | $4.69 |
(top 25 shown)
Source: CMS Part B by Provider and Service, 2022; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2023.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 152 | 12,120 | $3,007.19 | 84 |
| Hydrochlorothiazide | Hydrochlorothiazide | 69 | 5,490 | $215.95 | 38 |
| Lisinopril | Lisinopril | 64 | 5,070 | $730.57 | 37 |
| Amlodipine Besylate | Amlodipine Besylate | 42 | 3,480 | $377.22 | 29 |
| Simvastatin | Simvastatin | 34 | 2,820 | $502.07 | 21 |
| Losartan Potassium | Losartan Potassium | 34 | 3,060 | $751.29 | 21 |
| Alendronate Sodium | Alendronate Sodium | 33 | 2,138 | $632.58 | 18 |
| Levothyroxine Sodium | Levothyroxine Sodium | 27 | 1,989 | $303.17 | 16 |
| Allopurinol | Allopurinol | 23 | 2,010 | $428.71 | 16 |
| Omeprazole | Omeprazole | 23 | 1,830 | $498.49 | 15 |
| Escitalopram Oxalate | Escitalopram Oxalate | 20 | 1,440 | $389.74 | — |
| Ezetimibe | Ezetimibe | 20 | 1,800 | $1,169.53 | — |
| Atenolol | Atenolol | 19 | 1,710 | $187.95 | 12 |
| Metformin Hcl Er | Metformin Hcl | 18 | 1,470 | $489.22 | 11 |
| Metoprolol Succinate | Metoprolol Succinate | 17 | 1,530 | $828.81 | — |
| Tamsulosin Hcl | Tamsulosin Hcl | 14 | 1,260 | $575.09 | — |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 14 | 1,221 | $429.03 | — |
| Furosemide | Furosemide | 13 | 750 | $67.48 | — |
| Fluoxetine Hcl | Fluoxetine Hcl | 13 | 690 | $103.95 | — |
| Metoprolol Tartrate | Metoprolol Tartrate | 12 | 900 | $198.92 | — |
| Chlorthalidone | Chlorthalidone | 12 | 1,080 | $346.74 | — |
| Propranolol Hcl | Propranolol Hcl | 11 | 330 | $258.50 | — |
Source: CMS Part D by Provider and Drug, 2023; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Additional State Medicaid & Healthcare Payer Identifiers
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Infectious Disease
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated October 14, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Acton
- Dr. Teli Leung-Galecki, MD
- Dr. Narine Sharkhatunyan, MD
- Dr. Deborah Kovacs, MD
- Meenakshi Garg
- Dr. Amy Churchill, MD
- Dr. Peter Demartino, MD
Mailing Address
321 Main St
Acton, MA 017203718
Phone: 9782631131