Jerry Castilleja, M.D.
NPI 1720126659 · Family Medicine Physician · Seguin, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jerry Castilleja, M.D. is a Family Medicine Physician provider in Seguin, TX (NPI 1720126659).
Provider details
- NPI number
- 1720126659
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- H9456 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
132 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 132 | $5 |
Typical Medicare-allowed amounts for these services range $5–$5 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 48 |
| Gabapentin | 29 |
| Alprazolam | 25 |
| Donepezil Hcl | 19 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 18 |
| Duloxetine Hcl | 17 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 14 |
| Atorvastatin Calcium |
Practice location
Mailing address
Additional practice locations (3)
- 228 Saint George StGonzales, TX 78629-3910Phone: (830) 672-6511Fax: (830) 500-3623
- 2060 S Colorado StLockhart, TX 78644-3951Phone: (830) 494-4001Fax: (877) 599-5676
- 111 S Laurel AveLuling, TX 78648-2624Phone: (830) 875-6399Fax: (855) 825-2552
Registry dates
- Enumerated
- 2007-02-02
- Last updated
- 2021-06-04
- Certified
- 2021-06-04
Frequently asked questions
- What is Jerry Castilleja's NPI number?
- Jerry Castilleja's National Provider Identifier (NPI) is 1720126659, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jerry Castilleja's specialty?
- Jerry Castilleja is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jerry Castilleja located?
- Jerry Castilleja's practice location on file with NPPES is 1104 Jefferson Ave, Seguin, TX 78155-5910.
- What is Jerry Castilleja's phone number?
- The practice phone number listed in the NPPES registry for Jerry Castilleja is (830) 379-9797.
- Does Jerry Castilleja accept Medicare?
- Jerry Castilleja is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jerry Castilleja's NPI active?
- Yes — Jerry Castilleja's NPI (1720126659) is active in the NPPES registry as of the last update on 2021-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.