Gregory Buck, M.D.
NPI 1144269861 · Family Medicine Physician · Bremen, IN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Buck, M.D. is a Family Medicine Physician provider in Bremen, IN (NPI 1144269861).
Provider details
- NPI number
- 1144269861
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 01039562 (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,052 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 420 | $118 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 107 | $17 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 106 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 103 | $120 |
| 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 | 81 | $15 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 117 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 520 | 155 |
| Lisinopril | 373 | 109 |
| Amlodipine Besylate | 317 | 92 |
| Levothyroxine Sodium | 301 | 80 |
| Furosemide | 256 | 71 |
| Rosuvastatin Calcium | 232 | 74 |
| Potassium Chloride | 226 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$970 across 49 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-06
- Last updated
- 2023-11-17
- Certified
- 2023-11-17
Frequently asked questions
- What is Gregory Buck's NPI number?
- Gregory Buck's National Provider Identifier (NPI) is 1144269861, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Buck's specialty?
- Gregory Buck is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Buck located?
- Gregory Buck's practice location on file with NPPES is 1144 W Plymouth St, Bremen, IN 46506-1842.
- What is Gregory Buck's phone number?
- The practice phone number listed in the NPPES registry for Gregory Buck is (574) 546-5363.
- Does Gregory Buck accept Medicare?
- Gregory Buck is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Buck's NPI active?
- Yes — Gregory Buck's NPI (1144269861) is active in the NPPES registry as of the last update on 2023-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.