Dr. Mark E. Zeitzer, MD
- Medicare services, 2019
- 19
- Medicare patients, 2024
- 18
- Part D claims, 2019
- 13
- Affiliated sites
- 5
- Medical groups
- 18
- Practice address
- 1011 39th Ave, Greeley, CO 80634
- Practice phone
- Call (970) 351-8181
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nextcare Urgent Care
Greeley, Colorado
Find Dr. Zeitzer'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. Mark E. Zeitzer is an emergency medicine physician in Greeley, Colorado
Dr. Zeitzer practices at Nextcare Urgent Care in Greeley, Colorado.
Dr. Zeitzer's NPI, 1437174307, was assigned on July 13, 2006. Dr. Zeitzer holds Oregon license MD28003.
- NPI
- 1437174307NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486683927
- NPI enumeration date
- July 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (970) 351-8181
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark E. Zeitzer practices at Nextcare Urgent Care in Greeley, Colorado
Dr. Zeitzer's primary practice is Nextcare Urgent Care, at 1011 39th Ave, Greeley, CO 80634 in Weld County. The practice phone is (970) 351-8181.
- Nextcare Urgent Care1011 39th Ave, Greeley, CO 80634 · Weld CountyPhone(970) 351-8181
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark E. Zeitzer is affiliated with 6 sites of care and 18 medical groups
Dr. Zeitzer's primary practice is Nextcare Urgent Care in Greeley, Colorado. The medical group on file is NextCare Urgent Care. Dmand AI also links Dr. Zeitzer to 17 more medical groups and 5 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark E. Zeitzer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zeitzer practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nextcare Urgent Care | Available with a free account |
| +5 more sites and 17 medical groups | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark E. Zeitzer is one of 1,226 emergency medicine physicians in Colorado
Emergency medicine is Dr. Zeitzer's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Zeitzer's licenses on file in 3 states: Oregon, Pennsylvania and Washington.
Specialties and state licenses
- Emergency medicine, OregonPrimary
- Pennsylvania license
- Washington license
Emergency medicine physicians near Dr. Zeitzer
Counts of emergency medicine 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. Mark E. Zeitzer billed Medicare for 19 services in 2019
CMS data shows 19 Medicare services from Dr. Zeitzer across 1 procedure code in 2019, for 18 Medicare patients. Medicare paid $1,518 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Zeitzer's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 162019: 1919%
Dr. Zeitzer compared with the Colorado median for emergency medicine physicians, 2019
- Dr. Zeitzer
- Colorado median
- Medicare services
- 19vs 19990% below
- Medicare patients
- 18vs 19391% below
- Part D claims
- 13vs 3462% below
Medians across 1,237 emergency medicine physicians in Colorado with Dmand AI profiles that report each measure.
Dr. Zeitzer's most billed Medicare procedure codes, 2019
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. Zeitzer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zeitzer and other emergency medicine physicians in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark E. Zeitzer treated 18 Medicare patients in 2024, average age 75
CMS counts 18 Medicare patients who saw Dr. Zeitzer in 2024. The largest group is under 65, with 0 patients. 61% of them have high blood pressure. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Zeitzer's median patient age at 30, with 66% women.
Dr. Zeitzer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Zeitzer's Medicare patients, 2024
- High blood pressure61%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zeitzer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 30
Patient panel by sex, all payers
- Women66%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark E. Zeitzer wrote 13 Medicare Part D claims in 2019
In 2019, Dr. Zeitzer wrote 13 Medicare Part D claims. They cover 1 drug, with $978 in total drug cost. In 2018, CMS named 12 claims across 1 drug.
Dr. Zeitzer's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 122019: 138%
Drugs named by CMS: 1 in 2019, 1 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Mark E. Zeitzer takes part in Medicare
Dr. Zeitzer 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)
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.
Sources for Dr. Mark E. Zeitzer'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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 Dr. Mark E. Zeitzer
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. Mark E. Zeitzer's NPI number?
Dr. Mark E. Zeitzer's NPI number is 1437174307. It was assigned on July 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark E. Zeitzer?
Dr. Mark E. Zeitzer is an emergency medicine physician in Greeley, Colorado. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mark E. Zeitzer practice?
Dr. Zeitzer practices at 1011 39th Ave, Greeley, CO 80634. Dr. Zeitzer's primary practice is Nextcare Urgent Care in Greeley, Colorado. Dmand AI also links Dr. Zeitzer to 17 medical groups and 5 group practices and clinics.
What is Dr. Mark E. Zeitzer's office phone number?
The practice phone on file for Dr. Zeitzer is (970) 351-8181.
What is Dr. Mark E. Zeitzer's medical license number?
Dr. Zeitzer holds Oregon license MD28003, one of the licenses on file in 3 states.
Which states has Dr. Mark E. Zeitzer been licensed in?
Dmand AI has state licenses on file for Dr. Zeitzer in Oregon, Pennsylvania and Washington.
What medical group is Dr. Mark E. Zeitzer part of?
Dr. Zeitzer is linked to NextCare Urgent Care. Dmand AI links Dr. Zeitzer to 17 more medical groups.
Does Dr. Mark E. Zeitzer accept Medicare?
Yes. CMS data shows Dr. Zeitzer billed Medicare for 19 services in 2019, and Dr. Zeitzer accepts Medicare assignment.
How many Medicare patients does Dr. Mark E. Zeitzer see?
CMS counts 18 Medicare patients who saw Dr. Zeitzer in 2024, with an average age of 75.
What services does Dr. Mark E. Zeitzer bill to Medicare?
In 2019, Dr. Zeitzer's most billed Medicare services were emergency department visit (99284).
What drugs does Dr. Mark E. Zeitzer prescribe most?
In 2019 Medicare Part D data, Dr. Zeitzer's most prescribed drugs by claims were Proair Hfa.
How long has Dr. Mark E. Zeitzer been practicing?
Dr. Zeitzer graduated from medical school in 2002, 24 years ago.
Selling to emergency medicine practices?
See emergency medicine physicians 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