Richard Millstein, D.O.
NPI 1407101975 · Endocrinology, Diabetes & Metabolism Physician · Greeley, CO
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Millstein, D.O. is a Endocrinology, Diabetes & Metabolism Physician provider in Greeley, CO (NPI 1407101975).
Provider details
- NPI number
- 1407101975
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 55484 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,296 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 489 | $127 |
| Hemoglobin A1c Level83036 | 259 | $9 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 238 | $34 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 85 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 59 | $92 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 543 | 140 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 327 | 113 |
| Metformin Hcl | 276 | 86 |
| Empagliflozinbrand: Jardiance | 253 | 63 |
| Semaglutidebrand: Ozempic | 244 | 69 |
| Tirzepatidebrand: Mounjaro | 225 | 54 |
Mailing address
Additional practice locations (1)
- 535 S Burdick St Ste 256Kalamazoo, MI 49007-6112Phone: (269) 341-8585Fax: (269) 341-7518
Registry dates
- Enumerated
- 2012-07-19
- Last updated
- 2018-06-27
Frequently asked questions
- What is Richard Millstein's NPI number?
- Richard Millstein's National Provider Identifier (NPI) is 1407101975, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Millstein's specialty?
- Richard Millstein is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Millstein located?
- Richard Millstein's practice location on file with NPPES is 1900 16th St, Greeley, CO 80631.
- Does Richard Millstein accept Medicare?
- Richard Millstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Millstein's NPI active?
- Yes — Richard Millstein's NPI (1407101975) is active in the NPPES registry as of the last update on 2018-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.