Doctor profile · Federal record
Dr. Hazel Abaya
Internal Medicine Physician (CMS: Internal Medicine) · Thousand Oaks, CA
- NPI 1780116186
- Accepts Medicare
- 10 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2190 Lynn RD Ste 300
Thousand Oaks, CA 913608024
(805) 370-4802
Credentials & registration
- NPI registered
- April 2017 — 9 yrs on file
- Profile last updated
- March 18, 2022
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A169439
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1780116186. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,958
Distinct HCPCS
7
Medicare allowed
$253,650
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 849 | 315 | $123 | |
99239 |
Hospital discharge day management, more than 30 minutes | 333 | 312 | $120 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 241 | 230 | $180 | |
99497 |
Advance care planning, first 30 minutes | 209 | 198 | $78 | |
99291 |
Critical care, first 30-74 minutes | 173 | 63 | $218 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 112 | 68 | $82 | |
G0180 |
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | 41 | 41 | $57 |
In context: peer comparison
Among 15 peers in Thousand Oaks Internal Medicine Physician, average services per provider: 325. This provider delivers 6.0× the peer median.Open Payments
Industry payments received
All-time total
$22
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boston Scientific Corporation | 1 | $21.51 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
134
Patients
110
Total drug cost
$1,026
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 32 | 20 | $186 |
| Pantoprazole Sodium | Generic | 17 | 17 | $260 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 16 | 16 | $79 |
| Cefdinir | Generic | 12 | 12 | $144 |
| Cephalexin | Generic | 12 | 12 | $59 |
| Furosemide | Generic | 12 | 11 | $58 |
| Amlodipine Besylate | Generic | 11 | 11 | $61 |
| Carvedilol | Generic | 11 | 0 | $108 |
| Ciprofloxacin Hcl | Generic | 11 | 11 | $71 |
Frequently asked questions
What is Dr. Hazel Abaya's medical specialty?
Dr. Hazel Abaya practices Internal Medicine Physician in Thousand Oaks, CA.
Where does Dr. Hazel Abaya practice?
Dr. Hazel Abaya practices at 2190 Lynn RD Ste 300, Thousand Oaks, CA 913608024. Office phone: 8053704802.
What is Dr. Hazel Abaya's NPI?
Dr. Hazel Abaya's National Provider Identifier (NPI) is 1780116186, issued by NPPES.
Does Dr. Hazel Abaya accept Medicare assignment?
Yes. Dr. Hazel Abaya accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Hazel Abaya commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.