David Assis, MD
NPI 1124235015 · Hepatology Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Assis, MD is a Hepatology Physician provider in New Haven, CT (NPI 1124235015).
Provider details
- NPI number
- 1124235015
- Entity type
- Individual
- Primary specialty
- Hepatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 051778 (CT)
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
19 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
143 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 88 | $133 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 38 | $120 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 17 | $95 |
Typical Medicare-allowed amounts for these services range $95–$133 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ursodiol | 181 | 48 |
| Azathioprine | 51 | 13 |
| Carvedilol | 50 | 18 |
| Prednisone | 47 | 14 |
| Fenofibrate | 43 | 12 |
| Rifaximinbrand: Xifaxan | 43 | — |
| Mycophenolate Mofetil | 41 | 13 |
| Spironolactone | 30 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-17
- Last updated
- 2013-05-07
Frequently asked questions
- What is David Assis's NPI number?
- David Assis's National Provider Identifier (NPI) is 1124235015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Assis's specialty?
- David Assis is listed in the NPPES registry with a primary specialty of Hepatology Physician (Allopathic & Osteopathic Physicians).
- Where is David Assis located?
- David Assis's practice location on file with NPPES is 333 Cedar St, New Haven, CT 06520.
- What is David Assis's phone number?
- The practice phone number listed in the NPPES registry for David Assis is (203) 785-0712.
- Does David Assis accept Medicare?
- David Assis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Assis's NPI active?
- Yes — David Assis's NPI (1124235015) is active in the NPPES registry as of the last update on 2013-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.