Dr. Nicholas R. Thiessen, MD
- Medicare services, 2024
- 420
- Medicare patients, 2024
- 312
- Hospital affiliations
- 2
- Industry payments
- $9,093
- Medical groups
- 2
- Practice address
- 1955 West Frye Road, Chandler, AZ 85224
- Practice phone
- Call (480) 728-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Thiessen'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. Nicholas R. Thiessen is a surgical critical care physician in Chandler, Arizona
Dr. Thiessen practices at Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health.
Dr. Thiessen's NPI, 1053550301, was assigned on February 10, 2009. Dr. Thiessen graduated from University of Iowa, RJ & L Carver College of Medicine in 2008. Dr. Thiessen holds Arizona license 48625.
- NPI
- 1053550301NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456579846
- NPI enumeration date
- February 10, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (480) 728-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nicholas R. Thiessen practices at Dignity Health Chandler Regional Medical Center in Chandler, Arizona
Dr. Thiessen's primary practice is Dignity Health Chandler Regional Medical Center, at 1955 West Frye Road, Chandler, AZ 85224 in Maricopa County. The practice phone is (480) 728-3000.
- Dignity Health Chandler Regional Medical Center1955 West Frye Road, Chandler, AZ 85224 · Maricopa CountyPhone(480) 728-3000
Source: Dmand AI Affiliation Data
Dr. Nicholas R. Thiessen is affiliated with 4 sites of care and 2 medical groups
Dr. Thiessen's primary practice is Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health. Dr. Thiessen is also affiliated with Dignity Health Mercy Gilbert Medical Center. The medical group on file is St. Joseph's Faculty Physicians. Dmand AI also links Dr. Thiessen to 2 more group practices and clinics 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. Nicholas R. Thiessen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thiessen practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health Chandler Regional Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nicholas R. Thiessen is one of 49 surgical critical care physicians in Arizona
Surgical critical care is Dr. Thiessen's primary specialty in the NPI Registry, under taxonomy code 2086S0102X. Dr. Thiessen is licensed in Arizona.
Specialties and state licenses
- Surgical critical care, ArizonaPrimary
Surgical critical care physicians near Dr. Thiessen
Counts of surgical critical care 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. Nicholas R. Thiessen billed Medicare for 420 services in 2024
CMS data shows 420 Medicare services from Dr. Thiessen across 9 procedure codes in 2024, for 312 Medicare patients. Medicare paid $39,058 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Thiessen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4272024: 4202%
Dr. Thiessen compared with the Arizona median for surgical critical care physicians, 2024
- Dr. Thiessen
- Arizona median
- Medicare services
- 420vs 2032.1 times
- Medicare patients
- 312vs 1222.6 times
Medians across 52 surgical critical care physicians in Arizona with Dmand AI profiles that report each measure.
Dr. Thiessen'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Thiessen and other surgical critical care physicians in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nicholas R. Thiessen treated 312 Medicare patients in 2024, average age 78
CMS counts 312 Medicare patients who saw Dr. Thiessen in 2024. The largest group is 75 to 84, with 139 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.81, 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. Thiessen's median patient age at 63, with 47% women.
Dr. Thiessen's Medicare patients by age, 2024
Dr. Thiessen's Medicare patients by sex, 2024
- Women18158%
- Men13142%
Chronic conditions among Dr. Thiessen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Ischemic heart disease47%
- Chronic kidney disease44%
- Mood disorders42%
- Diabetes40%
- Anxiety39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Thiessen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women47%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Nicholas R. Thiessen takes part in Medicare
Dr. Thiessen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Nicholas R. Thiessen received $9,093 in industry payments from 2016 to 2025
CMS Open Payments shows 7 general payments to Dr. Thiessen from 5 drug and device companies from 2016 to 2025. Education make up the largest share, 99% of the total. Intuitive Surgical, Inc. paid the most, $9,000.
General payments to Dr. Thiessen by program year, 2016 to 2025
General payments to Dr. Thiessen by kind, 2016 to 2025
- Education$9,00099%
- Food and beverage$931%
Companies that paid Dr. Thiessen 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. Nicholas R. Thiessen graduated from University of Iowa, RJ & L Carver College of Medicine
Dr. Thiessen graduated from University of Iowa, RJ & L Carver College of Medicine in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nicholas R. Thiessen'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)Doctors and Clinicians Utilization Data (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. Nicholas R. Thiessen
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. Nicholas R. Thiessen's NPI number?
Dr. Nicholas R. Thiessen's NPI number is 1053550301. It was assigned on February 10, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Nicholas R. Thiessen?
Dr. Nicholas R. Thiessen is a surgical critical care physician in Chandler, Arizona. The primary specialty in the NPI Registry is Surgical Critical Care Physician (taxonomy code 2086S0102X).
Where does Dr. Nicholas R. Thiessen practice?
Dr. Thiessen practices at 1955 West Frye Road, Chandler, AZ 85224. Dr. Thiessen's primary practice is Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health. Dmand AI also links Dr. Thiessen to 2 group practices and clinics and 1 medical group.
What is Dr. Nicholas R. Thiessen's office phone number?
The practice phone on file for Dr. Thiessen is (480) 728-3000.
What is Dr. Nicholas R. Thiessen's medical license number?
Dr. Thiessen holds Arizona license 48625.
Which hospitals is Dr. Nicholas R. Thiessen affiliated with?
Dr. Thiessen practices at Dignity Health Chandler Regional Medical Center in Chandler, Arizona. Dr. Thiessen is also affiliated with Dignity Health Mercy Gilbert Medical Center.
What medical group is Dr. Nicholas R. Thiessen part of?
Dr. Thiessen is linked to St. Joseph's Faculty Physicians. Dmand AI links Dr. Thiessen to 1 more medical group.
Does Dr. Nicholas R. Thiessen accept Medicare?
Yes. CMS data shows Dr. Thiessen billed Medicare for 420 services in 2024, and Dr. Thiessen accepts Medicare assignment.
How many Medicare patients does Dr. Nicholas R. Thiessen see?
CMS counts 312 Medicare patients who saw Dr. Thiessen in 2024, with an average age of 78.
What services does Dr. Nicholas R. Thiessen bill to Medicare?
In 2024, Dr. Thiessen's most billed Medicare services were hospital inpatient care (99223), hospital inpatient care (99232) and hospital inpatient care (99233).
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Where did Dr. Nicholas R. Thiessen go to medical school?
Dr. Thiessen graduated from University of Iowa, RJ & L Carver College of Medicine in 2008.
Has Dr. Nicholas R. Thiessen received payments from drug or device companies?
CMS Open Payments shows $9,093 in general payments to Dr. Thiessen from 5 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Nicholas R. Thiessen been practicing?
Dr. Thiessen graduated from medical school in 2008, 18 years ago.
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