Evan Mercer
NPI 1801538632 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Evan Mercer is a Internal Medicine Physician provider in Boston, MA (NPI 1801538632).
Provider details
- NPI number
- 1801538632
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 1026736 (MA)
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 tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Losartan Potassium | 25 |
| Rosuvastatin Calcium | 23 |
| Amlodipine Besylate | 22 |
| Atorvastatin Calcium | 20 |
| Pantoprazole Sodium | 15 |
| Metformin Hcl | 11 |
| Metoprolol Succinate | 11 |
| Sulfasalazine | 11 |
| Albuterol Sulfate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-04-12
- Last updated
- 2026-05-24
- Certified
- 2026-05-24
Frequently asked questions
- What is Evan Mercer's NPI number?
- Evan Mercer's National Provider Identifier (NPI) is 1801538632, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Evan Mercer's specialty?
- Evan Mercer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Evan Mercer located?
- Evan Mercer's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is Evan Mercer's phone number?
- The practice phone number listed in the NPPES registry for Evan Mercer is (617) 355-6000.
- Does Evan Mercer accept Medicare?
- Evan Mercer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Evan Mercer's NPI active?
- Yes — Evan Mercer's NPI (1801538632) is active in the NPPES registry as of the last update on 2026-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.