Doctor profile · Federal record
Dr. Lee Maas, M.D.
Emergency Medicine Physician (CMS: Emergency Medicine) · Pomona, CA
- NPI 1548470081
- Accepts Medicare
- MIPS 86.3 / 100 · 2023
- 20 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1798 N Garey Ave, Department of Emergency Medicine
Pomona, CA 917672918
(909) 865-9500
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- August 18, 2013
- Year of graduation
- 2006 — 20 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- California #A101495
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1548470081. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
611
Distinct HCPCS
5
Medicare allowed
$67,568
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 227 | 208 | $9 | |
99285 |
Emergency department visit with high level of medical decision making | 169 | 163 | $182 | |
99291 |
Critical care, first 30-74 minutes | 105 | 101 | $224 | |
99284 |
Emergency department visit with moderate level of medical decision making | 89 | 86 | $125 | |
71045 |
X-ray of chest, 1 view | 21 | 21 | $9 |
In context: peer comparison
Among 7 peers in Pomona Emergency Medicine Physician, average services per provider: 126. This provider delivers 4.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
171
Patients
168
Total drug cost
$1,851
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 40 | 40 | $436 |
| Methylprednisolone | Generic | 22 | 21 | $226 |
| Ibuprofen | Generic | 21 | 21 | $101 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 20 | 18 | $667 |
| Cyclobenzaprine Hcl | Generic | 15 | 15 | $94 |
| Ondansetron Odt (Ondansetron) | Brand | 15 | 15 | $202 |
| Prednisone | Generic | 14 | 14 | $19 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 13 | 13 | $52 |
| Meclizine Hcl | Generic | 11 | 11 | $53 |
Frequently asked questions
What is Dr. Lee Maas's medical specialty?
Dr. Lee Maas practices Emergency Medicine Physician in Pomona, CA.
Where does Dr. Lee Maas practice?
Dr. Lee Maas practices at 1798 N Garey Ave, Pomona, CA 917672918. Office phone: 9098659500.
What is Dr. Lee Maas's NPI?
Dr. Lee Maas's National Provider Identifier (NPI) is 1548470081, issued by NPPES.
Does Dr. Lee Maas accept Medicare assignment?
Yes. Dr. Lee Maas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Lee Maas commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with high level of medical decision making (HCPCS 99285); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.