Dr. Peter J. Lennarson, MD
- Medicare services, 2024
- 252
- Medicare patients, 2024
- 179
- Part D claims, 2024
- 14
- Publications
- 17
- Hospital affiliations
- 2
- Practice address
- 12605 E 16th Ave, Aurora, CO 80045
- Practice phone
- Call (720) 848-0000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lennarson'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. Peter J. Lennarson is a neurosurgeon in Aurora, Colorado
Dr. Lennarson practices at UCHealth University of Colorado Hospital in Aurora, Colorado, part of UCHealth.
Dr. Lennarson's NPI, 1013966001, was assigned on May 8, 2006. Dr. Lennarson graduated from University of Wisconsin School of Medicine in 1995. Dr. Lennarson holds Colorado license 52461.
- NPI
- 1013966001NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183669898
- NPI enumeration date
- May 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (720) 848-0000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Peter J. Lennarson practices at UCHealth University of Colorado Hospital in Aurora, Colorado
Dr. Lennarson's primary practice is UCHealth University of Colorado Hospital, at 12605 E 16th Ave, Aurora, CO 80045 in Adams County. The practice phone is (720) 848-0000.
- UCHealth University of Colorado Hospital12605 E 16th Ave, Aurora, CO 80045 · Adams CountyPhone(720) 848-0000
Source: Dmand AI Affiliation Data
Dr. Peter J. Lennarson is affiliated with 4 sites of care and 2 medical groups
Dr. Lennarson's primary practice is UCHealth University of Colorado Hospital in Aurora, Colorado, part of UCHealth. Dr. Lennarson is also affiliated with UCHealth Longs Peak Hospital. The medical group on file is University of Colorado Medicine (CU Medicine). Dmand AI also links Dr. Lennarson to 1 more group practice or clinic, 1 home health agency and 1 medical group, 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. Peter J. Lennarson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lennarson practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCHealth University of Colorado Hospital | Available with a free account |
| +3 more sites and 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 UCHealth and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Peter J. Lennarson is one of 143 neurosurgeons in Colorado
Neurological surgery is Dr. Lennarson's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dmand AI has Dr. Lennarson's licenses on file in 2 states: Colorado and Nebraska.
Specialties and state licenses
- Neurological surgery, ColoradoPrimary
- Nebraska license
Neurosurgeons near Dr. Lennarson
Counts of neurosurgeons 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. Peter J. Lennarson billed Medicare for 252 services in 2024
CMS data shows 252 Medicare services from Dr. Lennarson across 10 procedure codes in 2024, for 179 Medicare patients. Medicare paid $55,542 for them.
Dr. Lennarson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 972024: 12933%
- Surgery
- 2023: 1222024: 1231%
Where Dr. Lennarson's Medicare services took place, 2024
- In an office114%
- In a facility24196%
Dr. Lennarson compared with the Colorado median for neurosurgeons, 2024
- Dr. Lennarson
- Colorado median
- Medicare services
- 252vs 13981% above
- Medicare patients
- 179vs 11358% above
- Part D claims
- 13vs 2446% below
Medians across 126 neurosurgeons in Colorado with Dmand AI profiles that report each measure.
Dr. Lennarson'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. Lennarson?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lennarson and other neurosurgeons in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Peter J. Lennarson treated 179 Medicare patients in 2024, average age 71
CMS counts 179 Medicare patients who saw Dr. Lennarson in 2024. The largest group is 65 to 74, with 85 patients. 75% of them have arthritis, and 66% have high blood pressure. 13% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lennarson's median patient age at 68, with 62% women.
Dr. Lennarson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lennarson's Medicare patients by sex, 2024
- Women9855%
- Men8145%
Chronic conditions among Dr. Lennarson's Medicare patients, 2024
- Arthritis75%
- High blood pressure66%
- High cholesterol66%
- Ischemic heart disease30%
- Anxiety28%
- Mood disorders28%
- Osteoporosis27%
- Depression26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lennarson'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
- Women62%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Peter J. Lennarson wrote 14 Medicare Part D claims in 2024
In 2024, Dr. Lennarson wrote 14 Medicare Part D claims for 11 patients. 79% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $195 in total drug cost. In 2017, CMS named 64 claims across 3 drugs.
Dr. Lennarson's Part D claims by kind of drug, 2024
- Generic11 claims79%
- Brand-name and other3 claims21%
Dr. Lennarson's most prescribed drugs by claims, 2018
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, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 642018: 1380%
Drugs named by CMS: 1 in 2018, 3 in 2017.
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. Peter J. Lennarson ranks in the 93rd percentile for spinal fusion in Medicare
Dr. Lennarson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lennarson as offering telehealth. CMS counts 241 procedures of spinal fusion by Dr. Lennarson, more than 93% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Lennarson ranks in Medicare procedure volume
- Spinal fusion
- 93rd percentile241 procedures
- Laminectomy or laminotomy (partial removal of spine bones)
- 85th percentile67 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Peter J. Lennarson has 17 publications on record
Dmand AI links 17 papers to Dr. Lennarson, published from 2012 to 2025. 2024 was the busiest year, with 5. The most frequent topics are Cerebrospinal Fluid Leak, Intracranial Hypotension and Magnetic Resonance Imaging. Dr. Lennarson has published most often in AJNR Am J Neuroradiol. Dr. Lennarson's most frequent co-authors are Debayan Bhaumik, MD, Danielle Wilhour and Abigail Cotner Anderson, MD.
Dr. Lennarson's papers by year, 2012 to 2025
Topics Dr. Lennarson writes about most
- Cerebrospinal Fluid Leak
- Intracranial Hypotension
- Magnetic Resonance Imaging
- Tomography, X-Ray Computed
- Blood Patch, Epidural
- Myelography
- Epidural Space
- Fistula
Dr. Lennarson's most frequent co-authors
- Debayan Bhaumik, MD4 shared papers
- Danielle Wilhour3 shared papers
- Abigail Cotner Anderson, MD2 shared papers
Recent publications by Dr. Lennarson
See who Dr. Lennarson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lennarson works with, so you can find a warm path to the right neurosurgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Peter J. Lennarson received $6,806 in industry payments from 2016 to 2025
CMS Open Payments shows 72 general payments to Dr. Lennarson from 19 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 41% of the total. Brainlab, Inc. paid the most, $2,620.
General payments to Dr. Lennarson by program year, 2016 to 2025
General payments to Dr. Lennarson by kind, 2016 to 2025
- Food and beverage$2,76141%
- Honoraria$2,50037%
- Travel and lodging$1,54523%
Companies that paid Dr. Lennarson 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. Peter J. Lennarson graduated from University of Wisconsin School of Medicine
Dr. Lennarson graduated from University of Wisconsin School of Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Peter J. Lennarson'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 | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 |
| 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. Peter J. Lennarson
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. Peter J. Lennarson's NPI number?
Dr. Peter J. Lennarson's NPI number is 1013966001. It was assigned on May 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Peter J. Lennarson?
Dr. Peter J. Lennarson is a neurosurgeon in Aurora, Colorado. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).
Where does Dr. Peter J. Lennarson practice?
Dr. Lennarson practices at 12605 E 16th Ave, Aurora, CO 80045. Dr. Lennarson's primary practice is UCHealth University of Colorado Hospital in Aurora, Colorado, part of UCHealth. Dmand AI also links Dr. Lennarson to 1 group practice or clinic, 1 home health agency and 1 medical group.
What is Dr. Peter J. Lennarson's office phone number?
The practice phone on file for Dr. Lennarson is (720) 848-0000.
What is Dr. Peter J. Lennarson's medical license number?
Dr. Lennarson holds Colorado license 52461, one of the licenses on file in 2 states.
Which states has Dr. Peter J. Lennarson been licensed in?
Dmand AI has state licenses on file for Dr. Lennarson in Colorado and Nebraska.
Which hospitals is Dr. Peter J. Lennarson affiliated with?
Dr. Lennarson practices at UCHealth University of Colorado Hospital in Aurora, Colorado. Dr. Lennarson is also affiliated with UCHealth Longs Peak Hospital.
What medical group is Dr. Peter J. Lennarson part of?
Dr. Lennarson is linked to University of Colorado Medicine (CU Medicine). Dmand AI links Dr. Lennarson to 1 more medical group.
Does Dr. Peter J. Lennarson accept Medicare?
Yes. CMS data shows Dr. Lennarson billed Medicare for 252 services in 2024, and Dr. Lennarson accepts Medicare assignment.
Does Dr. Peter J. Lennarson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lennarson as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Peter J. Lennarson see?
CMS counts 179 Medicare patients who saw Dr. Lennarson in 2024, with an average age of 71.
What services does Dr. Peter J. Lennarson bill to Medicare?
In 2024, Dr. Lennarson's most billed Medicare services were office visit, new patient (99204), surgery: bones and joints (22614) and office visit, established patient (99214).
Where did Dr. Peter J. Lennarson go to medical school?
Dr. Lennarson graduated from University of Wisconsin School of Medicine in 1995.
What drugs does Dr. Peter J. Lennarson prescribe most?
In 2018 Medicare Part D data, Dr. Lennarson's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Peter J. Lennarson received payments from drug or device companies?
CMS Open Payments shows $6,806 in general payments to Dr. Lennarson from 19 companies from 2016 to 2025. The largest total came from Brainlab, Inc.
How long has Dr. Peter J. Lennarson been practicing?
Dr. Lennarson graduated from medical school in 1995, 31 years ago.
Does Dr. Peter J. Lennarson do research?
Dmand AI links 17 publications to Dr. Lennarson, published from 2012 to 2025.
Who does Dr. Peter J. Lennarson publish with?
Dr. Lennarson's most frequent co-authors are Debayan Bhaumik, MD (4 shared papers), Danielle Wilhour (3 shared papers) and Abigail Cotner Anderson, MD (2 shared papers).
Selling to neurological surgery practices?
See neurosurgeons in Colorado by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card