Zachary Fricker, MD
NPI 1790049161 · Hepatology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Fricker, MD is a Hepatology Physician provider in Boston, MA (NPI 1790049161).
Provider details
- NPI number
- 1790049161
- Entity type
- Individual
- Primary specialty
- Hepatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 262478 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 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
727 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 | 177 | $123 |
| 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 | 157 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 133 | $149 |
| 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 | 82 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 58 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ursodiol | 135 | 31 |
| Tacrolimus | 95 | 26 |
| Pantoprazole Sodium | 83 | 24 |
| Entecavir | 61 | 11 |
| Omeprazole | 52 | 19 |
| Mycophenolate Mofetil | 51 | 11 |
| Prednisone | 49 | 15 |
| Rifaximinbrand: Xifaxan |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-29
- Last updated
- 2019-08-13
Frequently asked questions
- What is Zachary Fricker's NPI number?
- Zachary Fricker's National Provider Identifier (NPI) is 1790049161, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Fricker's specialty?
- Zachary Fricker is listed in the NPPES registry with a primary specialty of Hepatology Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Fricker located?
- Zachary Fricker's practice location on file with NPPES is 110 Francis St Fl 8, Boston, MA 02215-5501.
- What is Zachary Fricker's phone number?
- The practice phone number listed in the NPPES registry for Zachary Fricker is (617) 632-1070.
- Does Zachary Fricker accept Medicare?
- Zachary Fricker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Fricker's NPI active?
- Yes — Zachary Fricker's NPI (1790049161) is active in the NPPES registry as of the last update on 2019-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.