Provider Profile
Juliann G. Castillo, PhD, PA-C
Unclaimed ProfileAbout Dr. Castillo
Juliann G. Castillo, PhD, PA-C is a physician assistant practicing in Mcallen, TX. Medicare claims data shows Juliann provided 39 services to 32 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (956) 682-4401
- Email not available
Practice Locations
3600 N 23RD ST STE 103
Mcallen, TX 78501
Procedures Most Often Billed to Medicare
39 services · 32 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| 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 low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
16 | 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 5
Same specialty, same street address — most likely the same department or group.
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 Mcallen 8
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1999 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Juliann G. Castillo, PhD?
Juliann G. Castillo, PhD is a physician assistant in Mcallen, TX. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Juliann G. Castillo, PhD's address?
Juliann G. Castillo, PhD is listed at 3600 N 23Rd St Ste 103, Mcallen, TX 78501. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Juliann G. Castillo, PhD?
The number on file is (956) 682-4401. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Juliann G. Castillo, PhD?
Juliann G. Castillo, PhD's National Provider Identifier is 1396103909. 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 Juliann G. Castillo, PhD train?
Juliann G. Castillo, PhD attended Other, graduating in 1999. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Juliann G. Castillo, PhD have?
Juliann G. Castillo, PhD has 27 years experience. Calculated from a graduation year of 1999, reported in the CMS National Downloadable File.
CMS public data
What procedures does Juliann G. Castillo, PhD perform?
According to Medicare billing data, Juliann G. Castillo, PhD 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
Is Juliann G. Castillo, PhD's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Juliann G. Castillo, PhD. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.