Santiago Hernandez, MD
NPI 1801834007 · Hospitalist Physician · Madison, WI
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Santiago Hernandez, MD is a Hospitalist Physician provider in Madison, WI (NPI 1801834007).
Provider details
- NPI number
- 1801834007
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 43740-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
794 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 419 | $73 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 189 | $110 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 119 | $106 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 41 | $45 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 26 | $160 |
Typical Medicare-allowed amounts for these services range $45–$160 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Tartrate | 25 | — |
| Potassium Chloride | 21 | — |
| Clopidogrel Bisulfatebrand: Clopidogrel | 18 | — |
| Apixabanbrand: Eliquis | 16 | — |
| Cefprozil | 14 | 14 |
| Furosemide | 12 | 11 |
| Prednisone | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-02
- Last updated
- 2020-11-23
- Certified
- 2020-11-23
Frequently asked questions
- What is Santiago Hernandez's NPI number?
- Santiago Hernandez's National Provider Identifier (NPI) is 1801834007, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Santiago Hernandez's specialty?
- Santiago Hernandez is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Santiago Hernandez located?
- Santiago Hernandez's practice location on file with NPPES is 700 S Park St, Madison, WI 53715-1849.
- What is Santiago Hernandez's phone number?
- The practice phone number listed in the NPPES registry for Santiago Hernandez is (608) 251-6100.
- Does Santiago Hernandez accept Medicare?
- Santiago Hernandez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Santiago Hernandez's NPI active?
- Yes — Santiago Hernandez's NPI (1801834007) is active in the NPPES registry as of the last update on 2020-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.