Dr. Cristen J. Mazzella, MD
- Medicare services, 2021
- 433
- Part D claims, 2024
- 1,505
- Affiliated sites
- 4
- Medical group
- 1
- State licenses
- 2
- Practice address
- 5555 E Arapahoe Rd, Littleton, CO 80122
- Practice phone
- Call (303) 338-4545
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Arapahoe Medical Offices
Urgent Care Center · Littleton, Colorado
Find Dr. Mazzella'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. Cristen J. Mazzella is an internist in Littleton, Colorado
Dr. Mazzella practices at Arapahoe Medical Offices in Littleton, Colorado.
Dr. Mazzella's NPI, 1790715332, was assigned on July 3, 2006. Dr. Mazzella graduated from University of Missouri, Columbia School of Medicine in 2002. Dr. Mazzella holds Colorado license 47319.
- NPI
- 1790715332NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648276709
- NPI enumeration date
- July 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (303) 338-4545
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Cristen J. Mazzella practices at Arapahoe Medical Offices in Littleton, Colorado
Dr. Mazzella's primary practice is Arapahoe Medical Offices, at 5555 E Arapahoe Rd, Littleton, CO 80122. The practice phone is (303) 338-4545.
- Arapahoe Medical Offices5555 E Arapahoe Rd, Littleton, CO 80122Phone(303) 338-4545
Source: Dmand AI Affiliation Data
Dr. Cristen J. Mazzella is affiliated with 4 sites of care and 1 medical group
Dr. Mazzella's primary practice is Arapahoe Medical Offices in Littleton, Colorado. The medical group on file is Colorado Permanente Medical Group. Dmand AI also links Dr. Mazzella to 1 more breast imaging center, 1 group practice or clinic and 1 therapy and rehab clinic, 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. Cristen J. Mazzella's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mazzella practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arapahoe Medical Offices | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Cristen J. Mazzella is one of 1,668 internists in Colorado
Internal medicine is Dr. Mazzella's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Mazzella's licenses on file in 2 states: Colorado and Indiana.
Specialties and state licenses
- Internal medicine, ColoradoPrimary
- Indiana license
Internists near Dr. Mazzella
Counts of internists 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. Cristen J. Mazzella billed Medicare for 433 services in 2021
CMS data shows 433 Medicare services from Dr. Mazzella across 2 procedure codes in 2021. Medicare paid $8,729 for them. Every service was in an office.
Dr. Mazzella compared with the Colorado median for internists, 2021
- Dr. Mazzella
- Colorado median
- Medicare services
- 433vs 37715% above
- Part D claims
- 1,042vs 3183.3 times
Medians across 1,630 internists in Colorado with Dmand AI profiles that report each measure.
Dr. Mazzella's most billed Medicare procedure codes, 2021
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. Mazzella and other internists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Cristen J. Mazzella's patients have a median age of 52
Across all payers, Dmand AI patient panel data puts Dr. Mazzella's median patient age at 52, with 64% women.
Dr. Mazzella's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women64%
- Men36%
Source: Dmand AI Patient Panel Data
Dr. Cristen J. Mazzella wrote 1,505 Medicare Part D claims in 2024
In 2024, Dr. Mazzella wrote 1,505 Medicare Part D claims for 910 patients. 91% of them were for generic drugs. CMS names the drug for 1,042 of them, across 47 drugs with 11 or more claims each, at $40,358 in total drug cost. In 2023, CMS named 1,282 claims across 44 drugs.
Dr. Mazzella's Part D claims by kind of drug, 2024
- Generic1,368 claims91%
- Brand-name and other137 claims9%
Dr. Mazzella's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Mazzella's Part D claims, 2024
- Opioids8%114 of 1,505 claims
- Antibiotics6%84 of 1,505 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,2822024: 1,04219%
Drugs named by CMS: 47 in 2024, 44 in 2023.
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
How Dr. Cristen J. Mazzella takes part in Medicare
Dr. Mazzella 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. Cristen J. Mazzella graduated from University of Missouri, Columbia School of Medicine
Dr. Mazzella graduated from University of Missouri, Columbia School of Medicine in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Cristen J. Mazzella'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 Data |
| 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) |
| 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. Cristen J. Mazzella
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. Cristen J. Mazzella's NPI number?
Dr. Cristen J. Mazzella's NPI number is 1790715332. It was assigned on July 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Cristen J. Mazzella?
Dr. Cristen J. Mazzella is an internist in Littleton, Colorado. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Cristen J. Mazzella practice?
Dr. Mazzella practices at 5555 E Arapahoe Rd, Littleton, CO 80122. Dr. Mazzella's primary practice is Arapahoe Medical Offices in Littleton, Colorado. Dmand AI also links Dr. Mazzella to 1 breast imaging center, 1 group practice or clinic and 1 therapy and rehab clinic.
What is Dr. Cristen J. Mazzella's office phone number?
The practice phone on file for Dr. Mazzella is (303) 338-4545.
What is Dr. Cristen J. Mazzella's medical license number?
Dr. Mazzella holds Colorado license 47319, one of the licenses on file in 2 states.
Which states has Dr. Cristen J. Mazzella been licensed in?
Dmand AI has state licenses on file for Dr. Mazzella in Colorado and Indiana.
What medical group is Dr. Cristen J. Mazzella part of?
Dr. Mazzella is linked to Colorado Permanente Medical Group.
Does Dr. Cristen J. Mazzella accept Medicare?
Yes. CMS data shows Dr. Mazzella billed Medicare for 433 services in 2021, and Dr. Mazzella accepts Medicare assignment.
What services does Dr. Cristen J. Mazzella bill to Medicare?
In 2021, Dr. Mazzella's most billed Medicare services were medical service (0011A) and medical service (0012A).
Where did Dr. Cristen J. Mazzella go to medical school?
Dr. Mazzella graduated from University of Missouri, Columbia School of Medicine in 2002.
What drugs does Dr. Cristen J. Mazzella prescribe most?
In 2024 Medicare Part D data, Dr. Mazzella's most prescribed drugs by claims were Alendronate Sodium, Gabapentin and Lisinopril.
How long has Dr. Cristen J. Mazzella been practicing?
Dr. Mazzella graduated from medical school in 2002, 24 years ago.
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