William Santiago, MD
NPI 1568027373 · Internal Medicine Physician · Meriden, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Santiago, MD is a Internal Medicine Physician provider in Meriden, CT (NPI 1568027373).
Provider details
- NPI number
- 1568027373
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
734 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 50 Minutes99233 | 326 | $121 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 184 | $117 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 130 | $81 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 39 | $51 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 24 | $177 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 19 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 33 | 31 |
| Apixabanbrand: Eliquis | 23 | 15 |
| Cefpodoxime Proxetil | 22 | 22 |
| Doxycycline Hyclate | 13 | 12 |
| Amlodipine Besylate | 13 | 11 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 13 | 13 |
| Amoxicillin/Potassium Clav |
Practice location
Mailing address
Additional practice locations (1)
- 20 York StNew Haven, CT 06510-3220Phone: (203) 688-4242
Registry dates
- Enumerated
- 2019-05-07
- Last updated
- 2022-06-03
- Certified
- 2022-06-03
Frequently asked questions
- What is William Santiago's NPI number?
- William Santiago's National Provider Identifier (NPI) is 1568027373, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Santiago's specialty?
- William Santiago is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Santiago located?
- William Santiago's practice location on file with NPPES is 435 Lewis Ave, Meriden, CT 06451-2101.
- What is William Santiago's phone number?
- The practice phone number listed in the NPPES registry for William Santiago is (203) 694-8200.
- Does William Santiago accept Medicare?
- William Santiago is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Santiago's NPI active?
- Yes — William Santiago's NPI (1568027373) is active in the NPPES registry as of the last update on 2022-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.