Calvin Defenbau, NP-C
NPI 1265927362 · Family Nurse Practitioner · Gainesville, GA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Calvin Defenbau, NP-C is a Family Nurse Practitioner provider in Gainesville, GA (NPI 1265927362).
Provider details
- NPI number
- 1265927362
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP-C
- Sex
- Male
- Sole proprietor
- No
- License
- APRN-NP209756 (GA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
402 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 284 | $71 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 71 | $102 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 20 | $89 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 16 | $9 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 11 | $144 |
Typical Medicare-allowed amounts for these services range $9–$144 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 93 | 91 |
| Doxycycline Hyclate | 93 | 88 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 46 | 43 |
| Cefuroxime Axetilbrand: Cefuroxime | 43 | 43 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 41 | 40 |
| Fluticasone Propionate | 34 | 34 |
| Cephalexin | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$111 across 5 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
Additional practice locations (1)
- 122 Shirley RdAmericus, GA 31709Phone: (229) 942-9043
Registry dates
- Enumerated
- 2018-06-30
- Last updated
- 2025-10-30
- Certified
- 2025-10-30
Frequently asked questions
- What is Calvin Defenbau's NPI number?
- Calvin Defenbau's National Provider Identifier (NPI) is 1265927362, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Calvin Defenbau's specialty?
- Calvin Defenbau is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Calvin Defenbau located?
- Calvin Defenbau's practice location on file with NPPES is 725 Jesse Jewell Pkwy Se, Gainesville, GA 30501-3834.
- What is Calvin Defenbau's phone number?
- The practice phone number listed in the NPPES registry for Calvin Defenbau is (678) 207-4373.
- Does Calvin Defenbau accept Medicare?
- Calvin Defenbau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Calvin Defenbau's NPI active?
- Yes — Calvin Defenbau's NPI (1265927362) is active in the NPPES registry as of the last update on 2025-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.