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Edit this profileWhere to find Karen Y. Chen, PA
- Fremont location main office
39210 State St Ste 218, Fremont, CA 94538 - San Jose location
2420 Samaritan Dr, San Jose, CA 95124 - Sunnyvale location
603 S Knickerbocker Dr, Sunnyvale, CA 94087 - Redwood City location
3060 Broadway, Redwood City, CA 94062 - Mountain View location
525 South Dr Ste 115, Mountain View, CA 94040
About Karen Chen
Karen Y. Chen, PA is a physician assistant based in Fremont, CA. Medicare claims data shows Karen provided 336 services to 223 patients. The services billed most often include destruction of precancer skin growth, 2-14 growths, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1891374963.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (510) 790-0477
- Email not available
Practice Locations
39210 STATE ST STE 218
Fremont, CA 94538
2420 Samaritan Dr
San Jose, CA 95124
603 S Knickerbocker Dr
Sunnyvale, CA 94087
3060 Broadway
Redwood City, CA 94062
525 South Dr Ste 115
Mountain View, CA 94040
Procedures Most Often Billed to Medicare
336 services · 223 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | Procedure | 17003 |
102 | Less often than most peers in Physician Assistant |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
28 | Less often than most peers in Physician Assistant |
| Destruction of skin growth, 1-14 growths | Procedure | 17110 |
26 | Less often than most peers in Physician Assistant |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
20 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
66 | As often as other peers in Physician Assistant |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
42 | More often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
23 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
18 | Less often than most peers in Physician Assistant |
| New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more | Office visit | 99202 |
11 | Less often than most peers in Physician Assistant |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other physician assistants in Fremont 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2021 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Destruction of precancer skin growth, 2-14 growths 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Karen Y. Chen's specialty?
Karen Y. Chen is a physician assistant in Fremont, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Karen Y. Chen?
Karen Y. Chen is listed at 39210 State St Ste 218, Fremont, CA 94538. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Karen Y. Chen?
The number on file is (510) 790-0477. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Karen Y. Chen?
Karen Y. Chen's National Provider Identifier is 1891374963. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Karen Y. Chen's education?
Karen Y. Chen attended Other, graduating in 2021. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Karen Y. Chen have?
Karen Y. Chen has 5 years experience. Calculated from a graduation year of 2021, reported in the CMS National Downloadable File.
CMS public data
What is Karen Y. Chen known for?
According to Medicare billing data, Karen Y. Chen performs procedures including destruction of precancer skin growth, 2-14 growths, destruction of precancer skin growth, 1 growth and destruction of skin growth, 1-14 growths, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Karen Y. Chen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Karen Y. Chen. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.