Doctor profile · Federal record
Dr. Ada Lien, PA-C, MPH
Medical Physician Assistant (CMS: Physician Assistant) · San Leandro, CA
- NPI 1174053573
- Accepts Medicare
- MIPS 83.9 / 100 · 2023
- 9 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
13855 E 14Th St
San Leandro, CA 945782611
(510) 667-4545
Credentials & registration
- NPI registered
- June 2017 — 9 yrs on file
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 363AM0700X — NUCC code
- State license (1)
- California #54561
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1174053573. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
92
Distinct HCPCS
3
Medicare allowed
$10,479
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99284 |
Emergency department visit with moderate level of medical decision making | 44 | 42 | $112 | |
99285 |
Emergency department visit with high level of medical decision making | 25 | 25 | $162 | |
99283 |
Emergency department visit with low level of medical decision making | 23 | 23 | $66 |
In context: peer comparison
Among 2 peers in San Leandro Medical Physician Assistant, average services per provider: 32. This provider delivers 2.9× the peer median.Frequently asked questions
What is Dr. Ada Lien's medical specialty?
Dr. Ada Lien practices Medical Physician Assistant in San Leandro, CA.
Where does Dr. Ada Lien practice?
Dr. Ada Lien practices at 13855 E 14Th St, San Leandro, CA 945782611. Office phone: 5106674545.
What is Dr. Ada Lien's NPI?
Dr. Ada Lien's National Provider Identifier (NPI) is 1174053573, issued by NPPES.
Does Dr. Ada Lien accept Medicare assignment?
Yes. Dr. Ada Lien accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ada Lien commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with low level of medical decision making (HCPCS 99283). Source: CMS Medicare Physician & Other Practitioners file.