Tony Kastoon, M.D.
NPI 1184636235 · Internal Medicine Physician · San Bernardino, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tony Kastoon, M.D. is a Internal Medicine Physician provider in San Bernardino, CA (NPI 1184636235).
Provider details
- NPI number
- 1184636235
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301076855 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,127 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 851 | $132 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 154 | $35 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 51 | $17 |
| Ultrasound Scan of Head and Neck Soft Tissue76536 | 39 | $118 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 17 | $224 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 125 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 1,042 | 283 |
| Semaglutidebrand: Ozempic | 847 | 199 |
| Metformin Hcl | 549 | 178 |
| Tirzepatidebrand: Mounjaro | 376 | 67 |
| Empagliflozinbrand: Jardiance | 330 | 100 |
| Dulaglutidebrand: Trulicity | 319 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,584 across 294 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-13
- Last updated
- 2016-01-22
Frequently asked questions
- What is Tony Kastoon's NPI number?
- Tony Kastoon's National Provider Identifier (NPI) is 1184636235, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tony Kastoon's specialty?
- Tony Kastoon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tony Kastoon located?
- Tony Kastoon's practice location on file with NPPES is 399 E Highland Ave Ste 227, San Bernardino, CA 92404-3851.
- What is Tony Kastoon's phone number?
- The practice phone number listed in the NPPES registry for Tony Kastoon is (909) 882-1210.
- Does Tony Kastoon accept Medicare?
- Tony Kastoon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tony Kastoon's NPI active?
- Yes — Tony Kastoon's NPI (1184636235) is active in the NPPES registry as of the last update on 2016-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.