Doctor profile · Federal record
Dr. Nathaniel Keller, M.D.
Psychiatry Physician (CMS: Psychiatry) · Orlando, FL
- NPI 1144411844
- Accepts Medicare
- 30 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
52 W Underwood St
Orlando, FL 328061110
(407) 262-2220
fax (407) 834-5011
Credentials & registration
- NPI registered
- August 2007 — 19 yrs on file
- Profile last updated
- October 29, 2020
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 2084P0800X — NUCC code
- State license (1)
- Florida #ME87905
- Medicaid
- FL #016613800
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1144411844. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
581
Distinct HCPCS
4
Medicare allowed
$63,850
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 290 | 96 | $92 | |
90792 |
Psychiatric diagnostic evaluation with medical services | 167 | 149 | $171 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 67 | 35 | $79 | |
90833 |
Psychotherapy with evaluation and management visit, 30 minutes | 57 | 29 | $61 |
In context: peer comparison
Among 16 peers in Orlando Psychiatry Physician, average services per provider: 98. This provider delivers 5.9× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,513
Patients
225
Total drug cost
$22,954
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Alprazolam | Generic | 271 | 34 | $1,347 |
| Sertraline Hcl | Generic | 252 | 52 | $2,800 |
| Clonazepam | Generic | 187 | 24 | $2,250 |
| Bupropion Xl (Bupropion Hcl) | Brand | 125 | 26 | $2,615 |
| Trazodone Hcl | Generic | 110 | 24 | $1,283 |
| Fluoxetine Hcl | Generic | 96 | 16 | $1,116 |
| Duloxetine Hcl | Generic | 93 | 15 | $2,761 |
| Paroxetine Hcl | Generic | 63 | 0 | $1,431 |
| Quetiapine Fumarate | Generic | 55 | 0 | $1,552 |
| Lorazepam | Generic | 52 | 11 | $610 |
Hospital affiliations
Frequently asked questions
What is Dr. Nathaniel Keller's medical specialty?
Dr. Nathaniel Keller practices Psychiatry Physician in Orlando, FL.
Where does Dr. Nathaniel Keller practice?
Dr. Nathaniel Keller practices at 52 W Underwood St, Orlando, FL 328061110. Office phone: 4072622220.
What is Dr. Nathaniel Keller's NPI?
Dr. Nathaniel Keller's National Provider Identifier (NPI) is 1144411844, issued by NPPES.
Does Dr. Nathaniel Keller accept Medicare assignment?
Yes. Dr. Nathaniel Keller accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nathaniel Keller commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Psychiatric diagnostic evaluation with medical services (HCPCS 90792); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.