Doctor profile · Federal record
Dr. Darwin Tsang, O.D.
Optometrist (CMS: Optometry) · Petaluma, CA
- NPI 1619344918
- Accepts Medicare
- 11 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
401 Kenilworth Dr, Inside Target Optical
Petaluma, CA 949523400
(707) 775-6022
fax (707) 782-0568 - Mailing address
-
707 Kenilworth Drive, Inside Target Optical
Petaluma, CA 949523400
Credentials & registration
- NPI registered
- August 2015 — 11 yrs on file
- Profile last updated
- September 23, 2016
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 152W00000X — NUCC code
- State license (1)
- California #15225 TLG
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1619344918. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
201
Distinct HCPCS
4
Medicare allowed
$23,557
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92250 |
Photography of the retina | 65 | 64 | $46 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 63 | 63 | $163 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 61 | 61 | $151 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 12 | 11 | $90 |
In context: peer comparison
Among 5 peers in this city , average services per provider: 35. This provider delivers 5.7× the peer median.Open Payments
Industry payments received
All-time total
$189
Transactions
7
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Alcon Vision LLC | 4 | $101.66 | |
| CooperVision Inc. | 2 | $53.85 | |
| Bausch & Lomb Americas Inc. | 1 | $33.18 |
By nature of payment
Frequently asked questions
What is Dr. Darwin Tsang's medical specialty?
Dr. Darwin Tsang practices Optometrist in Petaluma, CA.
Where does Dr. Darwin Tsang practice?
Dr. Darwin Tsang practices at 401 Kenilworth Dr, Petaluma, CA 949523400. Office phone: 7077756022.
What is Dr. Darwin Tsang's NPI?
Dr. Darwin Tsang's National Provider Identifier (NPI) is 1619344918, issued by NPPES.
Does Dr. Darwin Tsang accept Medicare assignment?
Yes. Dr. Darwin Tsang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Darwin Tsang commonly perform?
Top Medicare-reported procedures in 2023: Photography of the retina (HCPCS 92250); New patient office or other outpatient visit (HCPCS 99204); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.