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Edit this profileAt a glance
- 25 Marston St, Ste 304, Lawrence, MA 01841
About Merrimack Medical & Walk in S LLC
Merrimack Medical & Walk in S LLC is an organization based in Lawrence, MA and listed in the NPI registry under family medicine. This organization is also listed as specializing in urgent care clinic. NPI 1013284637 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Practice Size
Counted from individual NPI records registered at the same street address; a shared building can inflate this.
Providers in This Building & Nearby
From registry street addresses: providers filed at this building, which can include unrelated practices sharing it.
- Michael J. Landman, M.D. Nephrology
- David Farzan, MD Family Medicine
- Asia Zaheen, MD Family Medicine
- Drasko Simovic, MD Clinical Neurophysiology
- Pedro M. Sanz-Altamira, M.D. Hematology & Oncology
- Jose R. Baez, DO Internal Medicine
- Theodore Gavrilescu, MD Neurology
Showing 7 of 18. The full list is in the Related Providers tab.
Specialty
Credentials & Licensing
About this hospital
Source: CMS Care Compare, Hospital General Information, checked 2026-09-12.
Most common inpatient stays (Medicare)
2,362 Medicare discharges across 66 diagnosis groups (2024). Groups with fewer than 11 discharges are not published by CMS.
| Diagnosis group | DRG | Discharges | Avg. Medicare payment |
|---|---|---|---|
| Septicemia Or Severe Sepsis Without Mv >96 Hours With Mcc | 871 | 262 | $16,791 |
| Heart Failure and Shock With Mcc | 291 | 208 | $11,276 |
| Respiratory Infections and Inflammations With Mcc | 177 | 115 | $14,045 |
| Simple Pneumonia and Pleurisy With Mcc | 193 | 104 | $10,985 |
| Other Kidney and Urinary Tract Diagnoses With Mcc | 698 | 78 | $14,238 |
| Kidney and Urinary Tract Infections Without Mcc | 690 | 78 | $7,148 |
| Kidney and Urinary Tract Infections With Mcc | 689 | 59 | $9,941 |
| Chronic Obstructive Pulmonary Disease With Mcc | 190 | 55 | $9,212 |
| Acute Myocardial Infarction, Discharged Alive With Mcc | 280 | 54 | $13,424 |
| Hip and Femur Procedures Except Major Joint With Cc | 481 | 53 | $17,568 |
Source: CMS Medicare Inpatient Hospitals by Provider and Service. Shows what the hospital admits Medicare patients for and what Medicare paid on average — not quality of care.
Contact Information
- (978) 688-3100
- Email not available
Practice Locations
25 MARSTON ST STE 304
Lawrence, MA 01841
CMS Quality Rating
Sources
This rating is published by the Centers for Medicare & Medicaid Services (CMS) and is reproduced here unmodified.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other family doctors at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 3 related providers in 1 group
Common questions
What kind of practice is Merrimack Medical & Walk in S LLC?
Merrimack Medical & Walk in S LLC is a family doctor in Lawrence, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Family Medicine”.
NPI registry
What is Merrimack Medical & Walk in S LLC's address?
Merrimack Medical & Walk in S LLC is listed at 25 Marston St Ste 304, Lawrence, MA 01841. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Merrimack Medical & Walk in S LLC?
The number on file is (978) 688-3100. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Merrimack Medical & Walk in S LLC?
Merrimack Medical & Walk in S LLC's National Provider Identifier is 1013284637. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Is Merrimack Medical & Walk in S LLC's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Merrimack Medical & Walk in S LLC. If this is you, claiming it is free.
Guide.md
Is this your practice?
Manage this listing? Log in or create an account, then click “This is my practice and I manage it” here. A verified physician whose registry address matches this location is approved instantly; everyone else is reviewed by a person.
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