Richard Millstein, D.O.
Endocrinology, Diabetes & Metabolism Physician · Greeley, CO
Richard Millstein, D.O. is an endocrinology, diabetes & metabolism physician with a practice address in Greeley, Colorado, and NPI 1407101975, issued on Jul 19, 2012. Check the license (Colorado DR.0055484, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Richard Millstein
- Credential
- D.O.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- DR.0055484 CO
55484 CO
5101023536 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1900 16TH St, Greeley, CO 80631
- Enumerated
- Jul 19, 2012
- Record last updated
- Jun 27, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicaid ID
- 71330076 CO
- Medicare enrollment
- Enrolled (PECOS I20160726002398); accepts Medicare assignment
- Medical or professional school
- Kansas City College Of Medicine And Surgery, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 149 in Colorado → Look up another NPI →
Also registered at 1900 16TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tyler Abbey, DOInternal Medicine Physician1730572694
- Leandra Bazan, PA-C, MTPhysician Assistant1407947286
- Mark Berntsen, MDInternal Medicine Physician1730166687
- Robert Cash, MDInternal Medicine Physician1285611152
- John Charbonneau, MDOccupational Medicine Physician1942272752
- Janell Durnen, MSN, APN, FNP-BCFamily Nurse Practitioner1265874929
Verify Richard Millstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0055484Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
5,620 Medicare Part D claims for 573 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 54% of claims.
Most prescribed
- Levothyroxine Sodium543 claims
- Lantus Solostar327 claims
- Metformin Hcl276 claims
- Jardiance253 claims
- Ozempic244 claims
- Mounjaro225 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.
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Poudre Valley Medical Group LLCFirestone, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Richard Millstein among 149 endocrinology, diabetes & metabolism physician records in Colorado
Richard Millstein, D.O. is one of 149 endocrinology, diabetes & metabolism physician records with a practice address in Colorado. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 81% of them.
- NPI issued2012 · 81% of these records are older, 17% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2012 · median 2002 among the 106 with a school on file
- Record last updated2018 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Colorado
There are 149 endocrinology, diabetes & metabolism physician records in Colorado.
All 149 in Colorado → Every provider in Greeley → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- James Speed, M.D.Greeley, CO 806311811059660
- Gregory Hughes, MDLoveland, CO 805381477520997
- Dilasha Katwal, M.D.Loveland, CO 805381841604790
- Maria Paula Reyes Ramirez, MDLoveland, CO 805381720615230
- Sindhura TrivediLoveland, CO 805381891922522
- Meriam Izon, M.D.Fort Collins, CO 805281093723231
- Polina Kaloyanova, MDFort Collins, CO 805281073707667
- Alejandro Munoz, M.D.Fort Collins, CO 805281568639391
Common questions
What is Richard Millstein, D.O.'s NPI number?
Richard Millstein, D.O.'s National Provider Identifier (NPI) is 1407101975, issued on Jul 19, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Richard Millstein, D.O. located?
The NPPES record lists a practice address at 1900 16TH St, Greeley, CO, 80631. Providers update this record themselves, so call before visiting.
How can I verify Richard Millstein, D.O.'s license?
NPPES lists Colorado license number DR.0055484, 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 Richard Millstein, D.O. prescribe under Medicare Part D?
In 2024, Richard Millstein, D.O. had 5,620 Medicare Part D claims for 573 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Richard Millstein, D.O.'s MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.