Mark Steven Larsen
- Medicare patients, 2024
- 115
- Hospital affiliations
- 1
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 326 Washington St, Norwich, CT 06360
- Practice phone
- Call (860) 889-8331
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Mark Larsen'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.
Mark Steven Larsen is a nurse anesthetist in Norwich, Connecticut
Mark Larsen practices at Backus Hospital in Norwich, Connecticut, part of Hartford HealthCare.
Mark Larsen's NPI, 1447223078, was assigned on February 13, 2006. Mark Larsen holds Connecticut license 001769.
- NPI
- 1447223078NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648292615
- NPI enumeration date
- February 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (860) 889-8331
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark Steven Larsen practices at Backus Hospital in Norwich, Connecticut
Mark Larsen's primary practice is Backus Hospital, at 326 Washington St, Norwich, CT 06360 in New London County. The practice phone is (860) 889-8331.
- Backus Hospital326 Washington St, Norwich, CT 06360 · New London CountyPhone(860) 889-8331
Source: Dmand AI Affiliation Data
Mark Steven Larsen is affiliated with 1 site of care and 2 medical groups
Mark Larsen's primary practice is Backus Hospital in Norwich, Connecticut, part of Hartford HealthCare. The medical group on file is Integrated Anesthesia Associates. Dmand AI also links Mark Larsen to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mark Steven Larsen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Larsen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Backus Hospital | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Hartford HealthCare and 6.2K+ hospitals, with verified contacts in the same login.
Mark Steven Larsen is one of 606 nurse anesthetists in Connecticut
Nurse anesthetist, certified registered is Mark Larsen's primary specialty in the NPI Registry, under taxonomy code 367500000X. Mark Larsen is licensed in Connecticut.
Specialties and state licenses
- Certified registered nurse anesthetist, ConnecticutPrimary
Nurse anesthetists near Mark Larsen
Counts of nurse anesthetists 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
Mark Steven Larsen treated 115 Medicare patients in 2024, average age 74
CMS counts 115 Medicare patients who saw Mark Larsen in 2024. The largest group is 65 to 74, with 53 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 1.46, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Larsen's median patient age at 72, with 32% women.
Mark Larsen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Mark Larsen's Medicare patients by sex, 2024
- Women3631%
- Men7969%
Chronic conditions among Mark Larsen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Cancer46%
- Chronic kidney disease36%
- Mood disorders34%
- Anxiety33%
- Depression33%
Share of Medicare patients with each condition. A patient can have several.
Mark Larsen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women32%
- Men68%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Mark Steven Larsen takes part in Medicare
Mark Larsen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Mark Steven Larsen'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 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) |
| 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 Mark Steven Larsen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark Steven Larsen's NPI number?
Mark Steven Larsen's NPI number is 1447223078. It was assigned on February 13, 2006, and it is active in the NPI Registry.
What does Mark Steven Larsen specialize in?
Mark Steven Larsen is a nurse anesthetist in Norwich, Connecticut. The primary specialty in the NPI Registry is Certified Registered Nurse Anesthetist (taxonomy code 367500000X).
Where does Mark Steven Larsen practice?
Mark Larsen practices at 326 Washington St, Norwich, CT 06360. Mark Larsen's primary practice is Backus Hospital in Norwich, Connecticut, part of Hartford HealthCare. Dmand AI also links Mark Larsen to 1 medical group.
What is Mark Steven Larsen's office phone number?
The practice phone on file for Mark Larsen is (860) 889-8331.
What is Mark Steven Larsen's medical license number?
Mark Larsen holds Connecticut license 001769.
Which hospitals is Mark Steven Larsen affiliated with?
Mark Larsen practices at Backus Hospital in Norwich, Connecticut.
What medical group is Mark Steven Larsen part of?
Mark Larsen is linked to Integrated Anesthesia Associates. Dmand AI links Mark Larsen to 1 more medical group.
Does Mark Steven Larsen accept Medicare?
Yes. CMS lists Mark Larsen as accepting Medicare assignment.
How many Medicare patients does Mark Steven Larsen see?
CMS counts 115 Medicare patients who saw Mark Larsen in 2024, with an average age of 74.
How long has Mark Steven Larsen been practicing?
Mark Larsen graduated from medical school in 1990, 36 years ago.
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