Doctor profile · Federal record
Dr. Karen Collom, OD
Optometrist (CMS: Optometry) · San Mateo, CA
- NPI 1104887629
- Accepts Medicare
- 33 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
3162 Campus Dr
San Mateo, CA 944033123
(650) 345-0248
fax (650) 345-7313
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- March 7, 2023
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 152W00000X — NUCC code
- State license (1)
- California #10267T
- Medicaid
- CA #SD0102670
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1104887629. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
146
Distinct HCPCS
5
Medicare allowed
$11,644
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 62 | 57 | $107 | |
92083 |
Exam of visual field with extended testing | 24 | 22 | $64 | |
92133 |
Imaging of optic nerve | 24 | 23 | $42 | |
92134 |
Imaging of retina | 24 | 23 | $40 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 12 | 12 | $123 |
In context: peer comparison
Among 9 peers in San Mateo Optometrist, average services per provider: 52. This provider delivers 2.8× the peer median.Open Payments
Industry payments received
All-time total
$618
Transactions
7
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| CooperVision INC. | 5 | $469.57 | |
| Johnson & Johnson Vision Care, INC. | 1 | $125.00 | |
| Tarsus Pharmaceuticals, INC. | 1 | $23.31 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
46
Patients
0
Total drug cost
$633
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 46 | 0 | $633 |
Frequently asked questions
What is Dr. Karen Collom's medical specialty?
Dr. Karen Collom practices Optometrist in San Mateo, CA.
Where does Dr. Karen Collom practice?
Dr. Karen Collom practices at 3162 Campus Dr, San Mateo, CA 944033123. Office phone: 6503450248.
What is Dr. Karen Collom's NPI?
Dr. Karen Collom's National Provider Identifier (NPI) is 1104887629, issued by NPPES.
Does Dr. Karen Collom accept Medicare assignment?
Yes. Dr. Karen Collom accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Collom commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Exam of visual field with extended testing (HCPCS 92083); Imaging of optic nerve (HCPCS 92133). Source: CMS Medicare Physician & Other Practitioners file.