Leona Shum, MD
NPI 1679941132 · Family Medicine Physician · Greeley, CO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leona Shum, MD is a Family Medicine Physician provider in Greeley, CO (NPI 1679941132).
Provider details
- NPI number
- 1679941132
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 1679941132 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
659 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 231 | $116 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 218 | $78 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 85 | $114 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 73 | $172 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 29 | $130 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 23 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 15 | 12 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 14 | 14 |
| Prednisone | 14 | 14 |
| Azithromycin | 13 | 13 |
| Metoprolol Succinate | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 4908 U StSacramento, CA 95817-1529Phone: (415) 218-3185
- 615 Fairhurst StSterling, CO 80751-4523Phone: (970) 522-0122
Registry dates
- Enumerated
- 2015-09-14
- Last updated
- 2025-05-16
- Certified
- 2025-05-16
Frequently asked questions
- What is Leona Shum's NPI number?
- Leona Shum's National Provider Identifier (NPI) is 1679941132, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leona Shum's specialty?
- Leona Shum is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leona Shum located?
- Leona Shum's practice location on file with NPPES is 1600 23rd Ave, Greeley, CO 80634-6070.
- What is Leona Shum's phone number?
- The practice phone number listed in the NPPES registry for Leona Shum is (970) 356-2424.
- Does Leona Shum accept Medicare?
- Leona Shum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leona Shum's NPI active?
- Yes — Leona Shum's NPI (1679941132) is active in the NPPES registry as of the last update on 2025-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.