Clinical CompetenceDelivery of Health CarePhysical and Rehabilitation Medicine
Dr. Alexander S. Lo, MD
NPI1942405592PAC ID2264604990
- Medicare services, 2024
- 477
- Medicare patients, 2024
- 474
- Publications
- 5
- MIPS score, 2024
- 95
- Hospital affiliations
- 1
- Practice address
- 251 E Huron St, Chicago, IL 60611
- Practice phone
- Call (312) 926-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lo's professional email, personal email and mobile number
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Dr. Alexander S. Lo is an emergency medicine physician in Chicago, Illinois
Dr. Lo practices at Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare.
Dr. Lo's NPI, 1942405592, was assigned on June 15, 2007. Dr. Lo holds Illinois license 036.143442.
NPI and contact details
- NPI
- 1942405592NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264604990
- NPI enumeration date
- June 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 926-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexander S. Lo practices at Northwestern Memorial Hospital in Chicago, Illinois
Dr. Lo's primary practice is Northwestern Memorial Hospital, at 251 E Huron St, Chicago, IL 60611 in Cook County. The practice phone is (312) 926-2000.
- Northwestern Memorial Hospital251 E Huron St, Chicago, IL 60611 · Cook CountyPhone(312) 926-2000
Source: Dmand AI Affiliation Data
Dr. Alexander S. Lo is affiliated with 2 sites of care and 3 medical groups
Dr. Lo's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Lo to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Northwestern Medical Faculty Foundation2 medical groupsNames with a free account1 group practice or clinicName with a free account
See all 5 affiliations for Dr. LoSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alexander S. Lo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lo practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Memorial Hospital | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexander S. Lo is one of 2,385 emergency medicine physicians in Illinois
Emergency medicine is Dr. Lo's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Lo's licenses on file in 2 states: Illinois and Alabama.
Specialties and state licenses
- Emergency medicine, IllinoisPrimary
- Alabama license
Emergency medicine physicians near Dr. Lo
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
2,385emergency medicine physicians in Illinois613emergency medicine physicians in Chicago65emergency medicine physicians at Northwestern Memorial Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Alexander S. Lo billed Medicare for 477 services in 2024
CMS data shows 477 Medicare services from Dr. Lo across 4 procedure codes in 2024, for 474 Medicare patients. Medicare paid $65,163 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024477
Medicare patients474
Paid by Medicare$65,163
Procedure codes4
Dr. Lo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3962024: 47720%
Dr. Lo compared with the Illinois median for emergency medicine physicians, 2024
- Dr. Lo
- Illinois median
- Medicare services
- 477vs 27474% above
- Medicare patients
- 474vs 27374% above
Medians across 2,281 emergency medicine physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Lo'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. Alexander S. Lo treated 474 Medicare patients in 2024, average age 73
CMS counts 474 Medicare patients who saw Dr. Lo in 2024. The largest group is 65 to 74, with 150 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 36% are also on Medicaid. Their average risk score is 2.46, 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. Lo's median patient age at 68, with 55% women.
Medicare patients, 2024474
Average age73
Average risk score2.46
Also on Medicaid36%
Dr. Lo's Medicare patients by age, 2024
Dr. Lo's Medicare patients by sex, 2024
- Women28159%
- Men19341%
Chronic conditions among Dr. Lo's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Arthritis55%
- Ischemic heart disease45%
- Chronic kidney disease43%
- Anxiety38%
- Diabetes37%
- Heart failure37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexander S. Lo scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Lo for performance year 2024, reported through an alternative payment model (APM). Dr. Lo accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Lo's MIPS scores, performance year 2024
- 95of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Alexander S. Lo has 5 publications on record
Dmand AI links 5 papers to Dr. Lo, published from 2011 to 2019. 2018 was the busiest year, with 2. Dr. Lo has published most often in BMJ Open Qual. Dr. Lo's most frequent co-authors are Omar Khan, MD, Mark A. Mason, MD and Lawrence R. Robinson.
Papers5
Years published2011 to 2019
Dr. Lo's papers by year, 2011 to 2019
Dr. Lo's most frequent co-authors
Recent publications by Dr. Lo
BMJ Open Qual
Ambulatory Care FacilitiesControlled Before-After StudiesData Collection
See who Dr. Lo researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lo works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Sources for Dr. Alexander S. Lo'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Alexander S. Lo
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. Alexander S. Lo's NPI number?
Dr. Alexander S. Lo's NPI number is 1942405592. It was assigned on June 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander S. Lo?
Dr. Alexander S. Lo is an emergency medicine physician in Chicago, Illinois. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Alexander S. Lo practice?
Dr. Lo practices at 251 E Huron St, Chicago, IL 60611. Dr. Lo's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Lo to 2 medical groups and 1 group practice or clinic.
What is Dr. Alexander S. Lo's office phone number?
The practice phone on file for Dr. Lo is (312) 926-2000.
What is Dr. Alexander S. Lo's medical license number?
Dr. Lo holds Illinois license 036.143442, one of the licenses on file in 2 states.
Which states has Dr. Alexander S. Lo been licensed in?
Dmand AI has state licenses on file for Dr. Lo in Illinois and Alabama.
Which hospitals is Dr. Alexander S. Lo affiliated with?
Dr. Lo practices at Northwestern Memorial Hospital in Chicago, Illinois.
What medical group is Dr. Alexander S. Lo part of?
Dr. Lo is linked to Northwestern Medical Faculty Foundation. Dmand AI links Dr. Lo to 2 more medical groups.
Does Dr. Alexander S. Lo accept Medicare?
Yes. CMS data shows Dr. Lo billed Medicare for 477 services in 2024, and Dr. Lo accepts Medicare assignment.
What is Dr. Alexander S. Lo's MIPS score?
Dr. Lo's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
Show 5 more questionsShow fewer questions
How many Medicare patients does Dr. Alexander S. Lo see?
CMS counts 474 Medicare patients who saw Dr. Lo in 2024, with an average age of 73.
What services does Dr. Alexander S. Lo bill to Medicare?
In 2024, Dr. Lo's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and critical care (99291).
How long has Dr. Alexander S. Lo been practicing?
Dr. Lo graduated from medical school in 2007, 19 years ago.
Does Dr. Alexander S. Lo do research?
Dmand AI links 5 publications to Dr. Lo, published from 2011 to 2019.
Who does Dr. Alexander S. Lo publish with?
Dr. Lo's most frequent co-authors are Omar Khan, MD (1 shared paper), Mark A. Mason, MD (1 shared paper) and Lawrence R. Robinson (1 shared paper).
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