Dr. Susan Y. Ly, MD
- Medicare services, 2024
- 679
- Medicare patients, 2024
- 639
- Part D claims, 2024
- 201
- MIPS score, 2024
- 90
- Hospital affiliations
- 2
- Practice address
- 295 Varnum Avenue, Lowell, MA 01854
- Practice phone
- Call (978) 937-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ly'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. Susan Y. Ly is an emergency medicine physician in Lowell, Massachusetts
Dr. Ly practices at Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine.
Dr. Ly's NPI, 1164682415, was assigned on June 11, 2008. Dr. Ly graduated from New York Medical College in 2008. Dr. Ly holds Massachusetts license 246431.
- NPI
- 1164682415NPI Registry (opens in a new tab)
- NPI enumeration date
- June 11, 2008
- NPI status
- Active
- Practice phone
- (978) 937-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Susan Y. Ly practices at Lowell General Hospital in Lowell, Massachusetts
Dr. Ly's primary practice is Lowell General Hospital, at 295 Varnum Avenue, Lowell, MA 01854 in Middlesex County. The practice phone is (978) 937-6000.
- Lowell General Hospital295 Varnum Avenue, Lowell, MA 01854 · Middlesex CountyPhone(978) 937-6000
Source: Dmand AI Affiliation Data
Dr. Susan Y. Ly is affiliated with 2 sites of care and 1 medical group
Dr. Ly's primary practice is Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine. Dr. Ly is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is Merrimack Valley Emergency Associates.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Susan Y. Ly's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ly practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lowell General Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Susan Y. Ly is one of 1,483 emergency medicine physicians in Massachusetts
Emergency medicine is Dr. Ly's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Ly is licensed in Massachusetts.
Specialties and state licenses
- Emergency medicine, MassachusettsPrimary
Emergency medicine physicians near Dr. Ly
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Susan Y. Ly billed Medicare for 679 services in 2024
CMS data shows 679 Medicare services from Dr. Ly across 4 procedure codes in 2024, for 639 Medicare patients. Medicare paid $89,364 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Ly's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6792024: 679No change
Dr. Ly compared with the Massachusetts median for emergency medicine physicians, 2024
- Dr. Ly
- Massachusetts median
- Medicare services
- 679vs 34199% above
- Medicare patients
- 639vs 33790% above
- Part D claims
- 74vs 362.1 times
Medians across 1,477 emergency medicine physicians in Massachusetts with Dmand AI profiles that report each measure.
Dr. Ly's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Susan Y. Ly treated 639 Medicare patients in 2024, average age 73
CMS counts 639 Medicare patients who saw Dr. Ly in 2024. The largest group is 65 to 74, with 191 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 45% are also on Medicaid. Their average risk score is 2.10, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ly's median patient age at 46, with 54% women.
Dr. Ly's Medicare patients by age, 2024
Dr. Ly's Medicare patients by sex, 2024
- Women36257%
- Men27743%
Chronic conditions among Dr. Ly's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Anxiety52%
- Mood disorders48%
- Arthritis47%
- Chronic kidney disease47%
- Ischemic heart disease45%
- Diabetes43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ly's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Susan Y. Ly wrote 201 Medicare Part D claims in 2024
In 2024, Dr. Ly wrote 201 Medicare Part D claims for 154 patients. 90% of them were for generic drugs. CMS names the drug for 74 of them, across 3 drugs with 11 or more claims each, at $920 in total drug cost. In 2023, CMS named 76 claims across 4 drugs.
Dr. Ly's Part D claims by kind of drug, 2024
- Generic180 claims90%
- Brand-name21 claims10%
Dr. Ly's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ly's Part D claims, 2024
- Opioids6%13 of 201 claims
- Antibiotics28%57 of 201 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 762024: 743%
Drugs named by CMS: 3 in 2024, 4 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Susan Y. Ly scored 90 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. Ly for performance year 2024, reported as part of a group.
Dr. Ly's MIPS scores, performance year 2024
- 90of 100Final score
- 80.5of 100Quality
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Susan Y. Ly graduated from New York Medical College
Dr. Ly graduated from New York Medical College in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Susan Y. Ly'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Susan Y. Ly
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. Susan Y. Ly's NPI number?
Dr. Susan Y. Ly's NPI number is 1164682415. It was assigned on June 11, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Susan Y. Ly?
Dr. Susan Y. Ly is an emergency medicine physician in Lowell, Massachusetts. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Susan Y. Ly practice?
Dr. Ly practices at 295 Varnum Avenue, Lowell, MA 01854. Dr. Ly's primary practice is Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine.
What is Dr. Susan Y. Ly's office phone number?
The practice phone on file for Dr. Ly is (978) 937-6000.
What is Dr. Susan Y. Ly's medical license number?
Dr. Ly holds Massachusetts license 246431.
Which hospitals is Dr. Susan Y. Ly affiliated with?
Dr. Ly practices at Lowell General Hospital in Lowell, Massachusetts. Dr. Ly is also affiliated with UMass Memorial Medical Center - University Campus.
What medical group is Dr. Susan Y. Ly part of?
Dr. Ly is linked to Merrimack Valley Emergency Associates.
Does Dr. Susan Y. Ly accept Medicare?
Yes. CMS data shows Dr. Ly billed Medicare for 679 services in 2024.
What is Dr. Susan Y. Ly's MIPS score?
Dr. Ly's MIPS final score for performance year 2024 is 90 out of 100, reported as part of a group.
How many Medicare patients does Dr. Susan Y. Ly see?
CMS counts 639 Medicare patients who saw Dr. Ly in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Dr. Susan Y. Ly bill to Medicare?
In 2024, Dr. Ly's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and critical care (99291).
Where did Dr. Susan Y. Ly go to medical school?
Dr. Ly graduated from New York Medical College in 2008.
What drugs does Dr. Susan Y. Ly prescribe most?
In 2024 Medicare Part D data, Dr. Ly's most prescribed drugs by claims were Ondansetron HCl, Cefpodoxime Proxetil and Prednisone.
How long has Dr. Susan Y. Ly been practicing?
Dr. Ly graduated from medical school in 2008, 18 years ago.
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