Dr. Stephen M. Nilsen, DO
- Medicare services, 2024
- 60
- Medicare patients, 2024
- 86
- Industry payments
- $302
- Affiliated sites
- 6
- Medical groups
- 11
- Practice address
- 742 South Governor'S Avenue, Dover, DE 19904
- Practice phone
- Call (302) 678-0725
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advance Endoscopy Center
Surgery Center - Medicare-Certified · Dover, Delaware
Find Dr. Nilsen'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. Stephen M. Nilsen is an anesthesiologist in Dover, Delaware
Dr. Nilsen practices at Advance Endoscopy Center in Dover, Delaware.
Dr. Nilsen's NPI, 1972589398, was assigned on December 17, 2005. Dr. Nilsen graduated from New York College of Osteo Medicine of New York Institute of Technology in 1994. Dr. Nilsen holds Maryland license H0058012.
- NPI
- 1972589398NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608825260
- NPI enumeration date
- December 17, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (302) 678-0725
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen M. Nilsen practices at Advance Endoscopy Center in Dover, Delaware
Dr. Nilsen's primary practice is Advance Endoscopy Center, at 742 South Governor'S Avenue, Dover, DE 19904. The practice phone is (302) 678-0725.
- Advance Endoscopy Center742 South Governor'S Avenue, Dover, DE 19904Phone(302) 678-0725
Source: Dmand AI Affiliation Data
Dr. Stephen M. Nilsen is affiliated with 6 sites of care and 11 medical groups
Dr. Nilsen's primary practice is Advance Endoscopy Center in Dover, Delaware. The medical group on file is Clearway Pain Solutions. Dmand AI also links Dr. Nilsen to 10 more medical groups, 3 group practices and clinics and 2 ambulatory surgery centers, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stephen M. Nilsen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nilsen practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advance Endoscopy Center | Available with a free account |
| +5 more sites and 10 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen M. Nilsen is one of 134 anesthesiologists in Delaware
Anesthesiology is Dr. Nilsen's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Nilsen's licenses on file in 2 states: Maryland and District of Columbia.
Specialties and state licenses
- Anesthesiology, MarylandPrimary
- District of Columbia license
Anesthesiologists near Dr. Nilsen
Counts of anesthesiologists 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. Stephen M. Nilsen billed Medicare for 60 services in 2024
CMS data shows 60 Medicare services from Dr. Nilsen across 3 procedure codes in 2024, for 86 Medicare patients. Medicare paid $6,100 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nilsen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 2222024: 6073%
Dr. Nilsen compared with the Delaware median for anesthesiologists, 2024
- Dr. Nilsen
- Delaware median
- Medicare services
- 60vs 10141% below
- Medicare patients
- 86vs 13436% below
Medians across 124 anesthesiologists in Delaware with Dmand AI profiles that report each measure.
Dr. Nilsen'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.
Need commercial claims for Dr. Nilsen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nilsen and other anesthesiologists in Delaware.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen M. Nilsen treated 86 Medicare patients in 2024, average age 72
CMS counts 86 Medicare patients who saw Dr. Nilsen in 2024. The largest group is 65 to 74, with 46 patients. 75% of them have high cholesterol, and 73% have high blood pressure. Their average risk score is 0.90, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nilsen's median patient age at 61, with 60% women.
Dr. Nilsen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Nilsen's Medicare patients by sex, 2024
- Women5260%
- Men3440%
Chronic conditions among Dr. Nilsen's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis63%
- Diabetes34%
- Anxiety28%
- Ischemic heart disease24%
- Chronic kidney disease23%
- Mood disorders22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nilsen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women60%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Stephen M. Nilsen takes part in Medicare
Dr. Nilsen 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)
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Dr. Stephen M. Nilsen received $302 in industry payments from 2016 to 2025
CMS Open Payments shows 15 general payments to Dr. Nilsen from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $61.
General payments to Dr. Nilsen by program year, 2016 to 2025
Companies that paid Dr. Nilsen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen M. Nilsen graduated from New York College of Osteo Medicine of New York Institute of Technology
Dr. Nilsen graduated from New York College of Osteo Medicine of New York Institute of Technology in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen M. Nilsen'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) |
| Industry payments | Open Payments (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. Stephen M. Nilsen
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. Stephen M. Nilsen's NPI number?
Dr. Stephen M. Nilsen's NPI number is 1972589398. It was assigned on December 17, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen M. Nilsen?
Dr. Stephen M. Nilsen is an anesthesiologist in Dover, Delaware. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Stephen M. Nilsen practice?
Dr. Nilsen practices at 742 South Governor'S Avenue, Dover, DE 19904. Dr. Nilsen's primary practice is Advance Endoscopy Center in Dover, Delaware. Dmand AI also links Dr. Nilsen to 10 medical groups, 3 group practices and clinics and 2 ambulatory surgery centers.
What is Dr. Stephen M. Nilsen's office phone number?
The practice phone on file for Dr. Nilsen is (302) 678-0725.
What is Dr. Stephen M. Nilsen's medical license number?
Dr. Nilsen holds Maryland license H0058012, one of the licenses on file in 2 states.
Which states has Dr. Stephen M. Nilsen been licensed in?
Dmand AI has state licenses on file for Dr. Nilsen in Maryland and District of Columbia.
What medical group is Dr. Stephen M. Nilsen part of?
Dr. Nilsen is linked to Clearway Pain Solutions. Dmand AI links Dr. Nilsen to 10 more medical groups.
Does Dr. Stephen M. Nilsen accept Medicare?
Yes. CMS data shows Dr. Nilsen billed Medicare for 60 services in 2024, and Dr. Nilsen accepts Medicare assignment.
How many Medicare patients does Dr. Stephen M. Nilsen see?
CMS counts 86 Medicare patients who saw Dr. Nilsen in 2024, with an average age of 72.
What services does Dr. Stephen M. Nilsen bill to Medicare?
In 2024, Dr. Nilsen's most billed Medicare services were anesthesia (00811), anesthesia (00731) and anesthesia (00813).
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Where did Dr. Stephen M. Nilsen go to medical school?
Dr. Nilsen graduated from New York College of Osteo Medicine of New York Institute of Technology in 1994.
Has Dr. Stephen M. Nilsen received payments from drug or device companies?
CMS Open Payments shows $302 in general payments to Dr. Nilsen from 8 companies from 2016 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Stephen M. Nilsen been practicing?
Dr. Nilsen graduated from medical school in 1994, 32 years ago.
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