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Edit this profileAt a glance
- 12555 Garden Grove Blvd Ste 504, Garden Grove, CA 92843
About William To
William To, PA is a physician assistant based in Garden Grove, CA. According to Medicare claims data, William cared for 294 Medicare patients across 430 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, telephone medical discussion with physician, 11-20 minutes, and new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more. The provider's National Provider Identifier (NPI) is 1336425644.
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
- (714) 537-5609
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
12555 GARDEN GROVE BLVD STE 504
Garden Grove, CA 92843
Procedures Most Often Billed to Medicare
430 services · 294 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
230 | More often than most peers in Physician Assistant |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
130 | More than most peers in Physician Assistant |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
48 | 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 |
22 | 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.
Other physician assistants at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
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.
More connections — 23 related providers in 3 groups
Other physician assistants in Garden Grove 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2004 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is William To?
William To is a physician assistant in Garden Grove, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is William To's address?
William To is listed at 12555 Garden Grove Blvd Ste 504, Garden Grove, CA 92843. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with William To?
The number on file is (714) 537-5609. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William To's NPI number?
William To's National Provider Identifier is 1336425644. 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
Where did William To train?
William To attended Other, graduating in 2004. This comes from the CMS National Downloadable File.
CMS public data
How long has William To been practicing?
William To has 22 years experience. Calculated from a graduation year of 2004, reported in the CMS National Downloadable File.
CMS public data
What procedures does William To perform?
According to Medicare billing data, William To the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William To confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William To. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.