Doctor profile · Federal record
Dr. Leroy Wayne Keiser, M.D.
Hematology & Oncology Physician (CMS: Medical Oncology) · Hematology (Internal Medicine) Physician · Medical Oncology Physician · Santa Rosa, CA
- NPI 1417047283
- Accepts Medicare
- 53 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3555 Round Barn Cir Ste 100
Santa Rosa, CA 954031757
(707) 528-1050
fax (707) 525-3874 - Mailing address
-
3555 Round Barn Cir
Santa Rosa, CA 954031757
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- November 3, 2021
- Year of graduation
- 1973 — 53 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- California #G28436
- Medicaid
- CA #00G284360
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1417047283. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,960
Distinct HCPCS
8
Medicare allowed
$296,690
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 1,027 | 440 | $138 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 351 | 170 | $193 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 251 | 154 | $138 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 143 | 143 | $236 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 82 | 37 | $124 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 52 | 26 | $83 | |
G2212 |
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 37 | 20 | $34 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 17 | 17 | $181 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 183. This provider delivers 11× the peer median.Open Payments
Industry payments received
All-time total
$16,832
Transactions
16
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Amgen Inc. | 13 | $16,734.17 | |
| Lilly USA, LLC | 2 | $63.17 | |
| Alexion Pharmaceuticals, Inc. | 1 | $34.94 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
718
Patients
240
Total drug cost
$834,674
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Eliquis (Apixaban) | Brand | 125 | 35 | $100,097 |
| Prednisone | Generic | 74 | 29 | $898 |
| Letrozole | Generic | 69 | 26 | $2,245 |
| Potassium Chloride | Generic | 53 | 21 | $843 |
| Gabapentin | Generic | 47 | 13 | $1,050 |
| Dexamethasone | Generic | 40 | 19 | $820 |
| Abiraterone Acetate | Generic | 39 | 0 | $174,305 |
| Anastrozole | Generic | 38 | 13 | $1,142 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 38 | 26 | $1,075 |
| Levothyroxine Sodium | Generic | 37 | 12 | $442 |
Hospital affiliations
Frequently asked questions
What is Dr. Leroy Wayne Keiser's medical specialty?
Dr. Leroy Wayne Keiser practices Hematology & Oncology Physician in Santa Rosa, CA.
Where does Dr. Leroy Wayne Keiser practice?
Dr. Leroy Wayne Keiser practices at 3555 Round Barn Cir Ste 100, Santa Rosa, CA 954031757. Office phone: 7075281050.
What is Dr. Leroy Wayne Keiser's NPI?
Dr. Leroy Wayne Keiser's National Provider Identifier (NPI) is 1417047283, issued by NPPES.
Does Dr. Leroy Wayne Keiser accept Medicare assignment?
Yes. Dr. Leroy Wayne Keiser accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Leroy Wayne Keiser commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); Telephone medical discussion with physician (HCPCS 99443). Source: CMS Medicare Physician & Other Practitioners file.