Doctor profile · Federal record
Dr. Calvin Defenbau, NP-C
Family Nurse Practitioner (CMS: Nurse Practitioner) · Registered Nurse · Gainesville, GA
- NPI 1265927362
- Accepts Medicare
- MIPS 76.6 / 100 · 2023
- 8 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
725 Jesse Jewell Pkwy Se
Gainesville, GA 305013834
(678) 207-4373
fax (770) 533-4727 - Additional location
-
122 Shirley RD
Americus, GA 31709
(229) 942-9043 - Mailing address
-
Po Box 658
Gainesville, GA 305030658
Credentials & registration
- NPI registered
- June 2018 — 8 yrs on file
- Profile last updated
- October 30, 2025
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 363LF0000X — NUCC code
- State licenses (2)
- Georgia #APRN-NP209756 · Georgia #RN209756
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1265927362. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
401
Distinct HCPCS
4
Medicare allowed
$28,449
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 306 | 271 | $72 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 49 | 48 | $100 | |
36415 |
Insertion of needle into vein for collection of blood sample | 32 | 31 | $8 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 14 | 14 | $86 |
In context: peer comparison
Among 42 peers in Gainesville Family Nurse Practitioner, average services per provider: 128. This provider delivers 3.1× the peer median.Open Payments
Industry payments received
All-time total
$111
Transactions
5
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Otsuka America Pharmaceutical, INC. | 1 | $26.27 | |
| Corcept Therapeutics | 1 | $24.08 | |
| Axsome Therapeutics, INC. | 1 | $22.79 | |
| GlaxoSmithKline, LLC. | 1 | $22.51 | |
| AstraZeneca Pharmaceuticals Lp | 1 | $14.87 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
550
Patients
527
Total drug cost
$5,238
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 105 | 100 | $183 |
| Cefuroxime (Cefuroxime Axetil) | Brand | 73 | 72 | $1,094 |
| Doxycycline Hyclate | Generic | 49 | 47 | $458 |
| Azithromycin | Generic | 47 | 47 | $216 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 38 | 36 | $999 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 32 | 31 | $328 |
| Cephalexin | Generic | 31 | 30 | $186 |
| Fluticasone Propionate | Generic | 30 | 29 | $371 |
| Dexamethasone | Generic | 29 | 29 | $358 |
| Paxlovid (Eua) (Nirmatrelvir/Ritonavir) | Brand | 25 | 24 | $271 |
Frequently asked questions
What is Dr. Calvin Defenbau's medical specialty?
Dr. Calvin Defenbau practices Family Nurse Practitioner in Gainesville, GA.
Where does Dr. Calvin Defenbau practice?
Dr. Calvin Defenbau practices at 725 Jesse Jewell Pkwy Se, Gainesville, GA 305013834. Office phone: 6782074373.
What is Dr. Calvin Defenbau's NPI?
Dr. Calvin Defenbau's National Provider Identifier (NPI) is 1265927362, issued by NPPES.
Does Dr. Calvin Defenbau accept Medicare assignment?
Yes. Dr. Calvin Defenbau accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Calvin Defenbau commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.