Nicholaus Mize, D.O
Internal Medicine Physician · Loveland, CO
Nicholaus Mize, D.O is an internal medicine physician with a practice address in Loveland, Colorado, and NPI 1629459482, issued on Jun 17, 2015. Check the license (Colorado DR.0061867, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nicholaus Mize
- Credential
- D.O
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- DR.0061867 CO
Self-reported in NPPES; status is on the state search - Practice location
- 221 E 29TH St Ste 202, Loveland, CO 80538
- Phone
- (970) 203-7050
- Enumerated
- Jun 17, 2015
- Record last updated
- Oct 30, 2025
- Fax
- (970) 203-7055
- Medicare enrollment
- Enrolled (PECOS I20190710001852); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 221 E 29TH St Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kendra Blanco, APCCProfessional Counselor1922561752
- Leighann Brock, AGACNP-BCNurse Practitioner1366119356
- Dodie Deming, NPAcute Care Nurse Practitioner1275179228
- Lucas McGee, MDFamily Medicine Physician1912467168
- Ronald McKenzie, MDFamily Medicine Physician1972184489
Verify Nicholaus Mize in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0061867Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average internal medicine physician in 2024
3,197 Medicare Part D claims for 464 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 109 claims were for opioids.
Most prescribed
- Levothyroxine Sodium192 claims
- Atorvastatin Calcium158 claims
- Losartan Potassium130 claims
- Omeprazole106 claims
- Tamsulosin Hcl104 claims
- Lisinopril94 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 3 group practices
- Intermountain Front Range, Inc.Wheat Ridge, CO
- Poudre Valley Medical Group LLCLoveland, CO
- Select Physical Therapy OF West Denver Limited PartnershipLoveland, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholaus Mize among 2,046 internal medicine physician records in Colorado
Nicholaus Mize, D.O is one of 2,046 internal medicine physician records with a practice address in Colorado. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 79% of them.
- NPI issued2015 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2015 · median 2006 among the 1,090 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
28 internal medicine physician records list a practice address in Loveland
They are 28 of the 2,113 NPPES records with a practice address in Loveland, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Loveland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Grace Alessi, MDLoveland, CO 805381457381964
- Nathan Ayer, M.D., M.P.H.Loveland, CO 805381457361172
- Sheila Copple, D.O.Loveland, CO 805381255384087
- Julia Cuervo, M.D.Loveland, CO 805381275500787
- Sarvin Emami, MDLoveland, CO 805381154304376
- Bertrand Honea, M.D.Loveland, CO 805381194742981
- Kevin Keefe, DOLoveland, CO 805381689663684
- William Lopez, M.D.Loveland, CO 805381023015807
Common questions
What is Nicholaus Mize, D.O's NPI number?
Nicholaus Mize, D.O's National Provider Identifier (NPI) is 1629459482, issued on Jun 17, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Nicholaus Mize, D.O located?
The NPPES record lists a practice address at 221 E 29TH St Ste 202, Loveland, CO, 80538. Phone: (970) 203-7050. Providers update this record themselves, so call before visiting.
How can I verify Nicholaus Mize, D.O's license?
NPPES lists Colorado license number DR.0061867, 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 Nicholaus Mize, D.O prescribe under Medicare Part D?
In 2024, Nicholaus Mize, D.O had 3,197 Medicare Part D claims for 464 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.