Christopher James Fellenz, MD
Family Medicine Physician · Westminster, CO
Christopher James Fellenz, MD is a family medicine physician with a practice address in Westminster, Colorado, and NPI 1972591329, issued on Oct 10, 2005. Check the license (Colorado 38087, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Christopher James Fellenz
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 38087 CO
Self-reported in NPPES; status is on the state search - Practice location
- 11245 Huron St, Westminster, CO 80234
- Phone
- (303) 338-4545
- Enumerated
- Oct 10, 2005
- Record last updated
- Jun 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 82138036 CO
- Medicare enrollment
- Enrolled (PECOS I20060824000056); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 1997
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Also registered at 11245 Huron St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maricelle AbrenaPharmacist1902234990
- Kim Adams, RNAmbulatory Care Registered Nurse1922351535
- Brian Ahlstrand, M.D.Internal Medicine Physician1487920690
- Geraldine AmadorNurse's Aide1700913787
- Stephanie Ambach, DOObstetrics & Gynecology Physician1710555198
- Kim Anderson, KIM ANDERSON RNPediatric Registered Nurse1003147984
Verify Christopher James Fellenz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 38087Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average family medicine physician in 2024
4,372 Medicare Part D claims for 390 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 194 claims were for opioids.
Most prescribed
- Atorvastatin Calcium404 claims
- Lisinopril217 claims
- Metformin Hcl168 claims
- Levothyroxine Sodium152 claims
- Omeprazole152 claims
- Simvastatin129 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Colorado Permanente Medical Group PCWestminster, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher James Fellenz among 3,563 family medicine physician records in Colorado
Christopher James Fellenz, MD is one of 3,563 family medicine physician records with a practice address in Colorado. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1997 · median 2008 among the 2,077 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
192 family medicine physician records list a practice address in Westminster
They are 192 of the 2,492 NPPES records with a practice address in Westminster, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Westminster → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Michael Cavanagh, MDWestminster, CO 802341033161955
- Mary Daehn, M.D.Northglenn, CO 802341689616831
- Larry Doehring, D.ONorthglenn, CO 802341326019001
- James Franzbrooke, D.O.Northglenn, CO 802341619036407
- Deborah Hackett, RNWestminster, CO 802341184767634
- Teresa Jarmul, MDWestminster, CO 802341689658320
- Jude Kirk, MDWestminster, CO 802341437198942
- Sarah Lena, MDWestminster, CO 802341942387949
Common questions
What is Christopher James Fellenz, MD's NPI number?
Christopher James Fellenz, MD's National Provider Identifier (NPI) is 1972591329, issued on Oct 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Christopher James Fellenz, MD located?
The NPPES record lists a practice address at 11245 Huron St, Westminster, CO, 80234. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Christopher James Fellenz, MD's license?
NPPES lists Colorado license number 38087, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christopher James Fellenz, MD prescribe under Medicare Part D?
In 2024, Christopher James Fellenz, MD had 4,372 Medicare Part D claims for 390 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.