Gregory Mccallum, MD
NPI 1689642282 · Family Medicine Physician · Redwood Falls, MN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Mccallum, MD is a Family Medicine Physician provider in Redwood Falls, MN (NPI 1689642282).
Provider details
- NPI number
- 1689642282
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 34641 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
31 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 Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 17 | $46 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 14 | $77 |
Typical Medicare-allowed amounts for these services range $46–$77 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 97 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 411 | 81 |
| Amlodipine Besylate | 337 | 67 |
| Losartan Potassium | 297 | 60 |
| Lisinopril | 246 | 53 |
| Metoprolol Succinate | 237 | 49 |
| Furosemide | 204 | 39 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-09
- Last updated
- 2024-08-28
- Certified
- 2024-08-28
Frequently asked questions
- What is Gregory Mccallum's NPI number?
- Gregory Mccallum's National Provider Identifier (NPI) is 1689642282, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Mccallum's specialty?
- Gregory Mccallum is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Mccallum located?
- Gregory Mccallum's practice location on file with NPPES is 1100 East Broadway, Redwood Falls, MN 56283.
- What is Gregory Mccallum's phone number?
- The practice phone number listed in the NPPES registry for Gregory Mccallum is (507) 637-2985.
- Does Gregory Mccallum accept Medicare?
- Gregory Mccallum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Mccallum's NPI active?
- Yes — Gregory Mccallum's NPI (1689642282) is active in the NPPES registry as of the last update on 2024-08-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.