Doctor profile · Federal record
Dr. David Maas, MD
Student in an Organized Health Care Education/Training Program (CMS: Hospice/Palliative Care) · Pasadena, CA
- NPI 1538653688
- Accepts Medicare
- MIPS 74.2 / 100 · 2023
- 8 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
100 W California Blvd
Pasadena, CA 911053010
(626) 421-7733 - Mailing address
-
2449 Mohawk St Apt 4
Pasadena, CA 911074229
Credentials & registration
- NPI registered
- June 2018 — 8 yrs on file
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 390200000X — NUCC code
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538653688. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
199
Distinct HCPCS
8
Medicare allowed
$21,723
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 52 | 36 | $93 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 35 | 26 | $111 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 32 | 21 | $75 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 25 | 18 | $111 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 15 | 15 | $147 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 15 | 11 | $75 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 14 | 14 | $163 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 11 | 11 | $205 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 40. This provider delivers 5.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
178
Patients
49
Total drug cost
$6,709
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone Hcl | Generic | 35 | 21 | $682 |
| Methadone Hcl | Generic | 34 | 0 | $449 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 32 | 13 | $922 |
| Gabapentin | Generic | 30 | 0 | $447 |
| Dronabinol | Generic | 28 | 15 | $3,917 |
| Mirtazapine | Generic | 19 | 0 | $292 |
Hospital affiliations
Frequently asked questions
What is Dr. David Maas's medical specialty?
Dr. David Maas practices Student in an Organized Health Care Education/Training Program in Pasadena, CA.
Where does Dr. David Maas practice?
Dr. David Maas practices at 100 W California Blvd, Pasadena, CA 911053010. Office phone: 6264217733.
What is Dr. David Maas's NPI?
Dr. David Maas's National Provider Identifier (NPI) is 1538653688, issued by NPPES.
Does Dr. David Maas accept Medicare assignment?
Yes. Dr. David Maas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. David Maas commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with straightforward or low level of medical decision making (HCPCS 99221); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.