Ian E. Parsons, M.D.
Family Medicine Physician · Centennial, CO
Ian E. Parsons, M.D. is a family medicine physician with a practice address in Centennial, Colorado, and NPI 1851421614, issued on Mar 7, 2007. Check the license (Colorado 42271, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ian E. Parsons
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 42271 CO
Self-reported in NPPES; status is on the state search - Practice location
- 5555 E Arapahoe RD, Centennial, CO 80122
- Phone
- (303) 338-4545
- Enumerated
- Mar 7, 2007
- Record last updated
- Jun 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 29683238 CO
- Medicare enrollment
- Enrolled (PECOS I20060109000364); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Also registered at 5555 E Arapahoe RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Debbie Andersen, MS, RDRegistered Dietitian1134661937
- Christina AragonSpecialist1134324171
- Kari BednarchikRegistered Nurse1164714960
- Samantha Benning, NPObstetrics & Gynecology Nurse Practitioner1518097377
- Joanna Burch, MDDermatology Physician1144323130
- Kimberly Butler, LPNLicensed Practical Nurse1023208915
Verify Ian E. Parsons in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 42271Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average family medicine physician in 2024
9,200 Medicare Part D claims for 758 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 236 claims were for opioids.
Most prescribed
- Atorvastatin Calcium781 claims
- Levothyroxine Sodium482 claims
- Lisinopril404 claims
- Simvastatin350 claims
- Omeprazole308 claims
- Tamsulosin Hcl298 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 PCAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian E. Parsons among 3,563 family medicine physician records in Colorado
Ian E. Parsons, M.D. 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 42% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2002 · 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).
40 family medicine physician records list a practice address in Centennial
They are 40 of the 3,008 NPPES records with a practice address in Centennial, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Centennial → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Edwin Anselmi, MDCentennial, CO 801221790780989
- Jennifer Arnold, MDCentennial, CO 801221851334239
- Nell Davis, MDCentennial, CO 801221437228780
- Jeffry Gerber, M.D.Littleton, CO 801221316031529
- Theresa Heble, M.D.Littleton, CO 801221497756639
- Jennifer Hronkin, MDCentennial, CO 801221992716161
- Ronald McLean, MDCentennial, CO 801221235245689
- Laura Patton, MDCentennial, CO 801221477596849
Common questions
What is Ian E. Parsons, M.D.'s NPI number?
Ian E. Parsons, M.D.'s National Provider Identifier (NPI) is 1851421614, issued on Mar 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ian E. Parsons, M.D. located?
The NPPES record lists a practice address at 5555 E Arapahoe RD, Centennial, CO, 80122. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Ian E. Parsons, M.D.'s license?
NPPES lists Colorado license number 42271, 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 Ian E. Parsons, M.D. prescribe under Medicare Part D?
In 2024, Ian E. Parsons, M.D. had 9,200 Medicare Part D claims for 758 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.