Mark Monterroso
NPI 1780119743 · Emergency Medicine Physician · Visalia, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Monterroso is a Emergency Medicine Physician provider in Visalia, CA (NPI 1780119743).
Provider details
- NPI number
- 1780119743
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A158668 (CA)
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
9 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
1,029 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 459 | $179 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 272 | $9 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 151 | $124 |
| Critical Care, First 30-74 Minutes99291 | 102 | $222 |
| X-Ray of Chest, 1 View71045 | 33 | $9 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 12 | $73 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 40 | 39 |
| Cefdinir | 34 | 33 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 33 | 32 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 31 | 31 |
| Azithromycin | 20 | 20 |
| Ondansetronbrand: Ondansetron Odt | 16 | 16 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 across 1 record (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
- 2017-04-27
- Last updated
- 2019-11-18
Frequently asked questions
- What is Mark Monterroso's NPI number?
- Mark Monterroso's National Provider Identifier (NPI) is 1780119743, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Monterroso's specialty?
- Mark Monterroso is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Monterroso located?
- Mark Monterroso's practice location on file with NPPES is 400 W Mineral King Ave, Visalia, CA 93291-6237.
- What is Mark Monterroso's phone number?
- The practice phone number listed in the NPPES registry for Mark Monterroso is (661) 599-8786.
- Does Mark Monterroso accept Medicare?
- Mark Monterroso is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Monterroso's NPI active?
- Yes — Mark Monterroso's NPI (1780119743) is active in the NPPES registry as of the last update on 2019-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.