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Alzheimer DiseaseTauopathiesAmyvid
Dr. Amy Marie Knorr, MD
NPI1255432043
- Medicare services, 2019
- 859
- Part D claims, 2020
- 249
- Clinical trials
- 3
- Industry payments
- $7,591
- Affiliated sites
- 1
- Practice address
- 637 West Ave, Norwalk, CT 06850-4004
- Practice phone
- Call (203) 853-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Neurology Associates Of Norwalk
Medical specialty practice · Norwalk, Connecticut
Find Dr. Knorr's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Amy Marie Knorr is a neurologist in Greenwich, Connecticut
Dr. Knorr practices at Neurology Associates Of Norwalk in Norwalk, Connecticut.
Dr. Knorr's NPI, 1255432043, was assigned on September 26, 2006. Dr. Knorr holds Connecticut license 037849.
NPI and contact details
- NPI
- 1255432043NPI Registry (opens in a new tab)
- NPI enumeration date
- September 26, 2006
- NPI status
- Active
- Practice phone
- (203) 853-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Amy Marie Knorr practices in Norwalk and Greenwich
Dr. Knorr's primary practice is Neurology Associates of Norwalk, at 637 West Ave, Norwalk, CT 06850-4004. The practice phone is (203) 853-5000. The NPI Registry lists Dr. Knorr's practice address as 5 Perryridge Rd, Greenwich, CT 06830.
- Neurology Associates of NorwalkPrimary637 West Ave, Norwalk, CT 06850-4004Phone(203) 853-5000
- NPI Registry address5 Perryridge Rd, Greenwich, CT 06830 · Western Ct CountyPhone(203) 853-5000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Amy Marie Knorr is affiliated with 1 site of care and 1 medical group
Dr. Knorr's primary practice is Neurology Associates Of Norwalk in Norwalk, Connecticut. Dmand AI also links Dr. Knorr to 1 medical group, named with a free account.
Neurology Associates Of NorwalkPrimary
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Amy Marie Knorr's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knorr practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Neurology Associates Of Norwalk | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Amy Marie Knorr is one of 302 neurologists in Connecticut
Neurology is Dr. Knorr's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Knorr is licensed in Connecticut.
Specialties and state licenses
- Neurology, ConnecticutPrimary
Neurologists near Dr. Knorr
Counts of neurologists with a Dmand AI profile, by place and practice. Each opens the list.
302neurologists in Connecticut
5neurologists in Greenwich
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Amy Marie Knorr billed Medicare for 859 services in 2019
CMS data shows 859 Medicare services from Dr. Knorr across 10 procedure codes in 2019. Medicare paid $71,078 for them.
Medicare services, 2019859
Paid by Medicare$71,078
Procedure codes10
Dr. Knorr's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 9222019: 73420%
- Tests and treatments
- 2018: 1022019: 12523%
- Drugs given in the office
- 2018: 7,2002019: 0100%
Where Dr. Knorr's Medicare services took place, 2019
- In an office48056%
- In a facility37944%
Dr. Knorr compared with the Connecticut median for neurologists, 2019
- Dr. Knorr
- Connecticut median
- Medicare services
- 859vs 2233.9 times
- Part D claims
- 249vs 241Close to median
Medians across 293 neurologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Knorr's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Knorr?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Knorr and other neurologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Amy Marie Knorr's patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Dr. Knorr's median patient age at 63, with 67% women.
Dr. Knorr's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women67%
- Men27%
Source: Dmand AI Patient Panel Data
Dr. Amy Marie Knorr wrote 249 Medicare Part D claims in 2020
In 2020, Dr. Knorr wrote 249 Medicare Part D claims. They cover 10 drugs, with $11,590 in total drug cost. In 2019, CMS named 1,753 claims across 48 drugs.
Part D claims, 2020249
Drugs named by CMS10
Total drug cost$11,590
Dr. Knorr's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 1,7532020: 24986%
Drugs named by CMS: 10 in 2020, 48 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Amy Marie Knorr has worked on 3 clinical trials
Dmand AI links Dr. Knorr to 3 clinical trials, 3 of them phase 1 studies. Conditions studied include Alzheimer Disease, Supranuclear Palsy, Progressive and Ophthalmoplegia. Invicro sponsors the most, 3.
Conditions in Dr. Knorr's trials
- Alzheimer Disease
- Supranuclear Palsy, Progressive
- Ophthalmoplegia
- Tauopathies
Recent clinical trials with Dr. Knorr
Supranuclear Palsy, ProgressiveOphthalmoplegia[18F] APN-1607
Sources: ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Amy Marie Knorr received $7,591 in industry payments from 2016 to 2025
CMS Open Payments shows 412 general payments to Dr. Knorr from 47 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 94% of the total. Biogen, Inc. paid the most, $901.
General payments to Dr. Knorr by program year, 2016 to 2025
General payments to Dr. Knorr by kind, 2016 to 2025
$7.6Kin total
- Food and beverage$7,17294%
- Speaker and faculty fees$2573%
- Education$1472%
- Gifts$150%
Companies that paid Dr. Knorr the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Amy Marie Knorr's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Clinical trials and co-investigators | ClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Amy Marie Knorr
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Amy Marie Knorr's NPI number?
Dr. Amy Marie Knorr's NPI number is 1255432043. It was assigned on September 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Amy Marie Knorr?
Dr. Amy Marie Knorr is a neurologist in Greenwich, Connecticut. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Amy Marie Knorr practice?
Dr. Knorr practices at 637 West Ave, Norwalk, CT 06850-4004. Dr. Knorr also practices at 5 Perryridge Rd, Greenwich, CT 06830. Dr. Knorr's primary practice is Neurology Associates Of Norwalk in Norwalk, Connecticut. Dmand AI also links Dr. Knorr to 1 medical group.
What is Dr. Amy Marie Knorr's office phone number?
The practice phone on file for Dr. Knorr is (203) 853-5000.
What is Dr. Amy Marie Knorr's medical license number?
Dr. Knorr holds Connecticut license 037849.
Does Dr. Amy Marie Knorr accept Medicare?
Yes. CMS data shows Dr. Knorr billed Medicare for 859 services in 2019.
What services does Dr. Amy Marie Knorr bill to Medicare?
In 2019, Dr. Knorr's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99232) and hospital inpatient care (99222).
What drugs does Dr. Amy Marie Knorr prescribe most?
In 2020 Medicare Part D data, Dr. Knorr's most prescribed drugs by claims were Carbidopa-Levodopa, Donepezil HCl and Gabapentin.
Has Dr. Amy Marie Knorr received payments from drug or device companies?
CMS Open Payments shows $7,591 in general payments to Dr. Knorr from 47 companies from 2016 to 2025. The largest total came from Biogen, Inc.
How long has Dr. Amy Marie Knorr been practicing?
Dr. Knorr's NPI was assigned in 2006.
Does Dr. Amy Marie Knorr do research?
Dr. Knorr has worked on 3 clinical trials.
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