Physician Profile
Based in Lawrence, MA, Johannah K. Merrill, MD is listed in the NPI registry under emergency medical services. Johannah graduated from University of Virginia School of Medicine in 2016. Johannah is also listed as specializing in emergency medicine and student in an organized health care education program. Medicare claims data shows Johannah provided 484 services to 472 patients. The services billed most often include emergency department visit with high level of medical decision making, emergency department visit with moderate level of medical decision making, and emergency department visit with low level of medical decision making.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
1 GENERAL ST
Lawrence, MA 01841
101 Manning Dr
Chapel Hill, NC 27514
170 Manning Dr # 7594
Chapel Hill, NC 27514
601 Elmwood Ave Box 655
Rochester, NY 14642
Within Emergency Medical Services generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Abdominal
Airway & breathing
Allergies & Immune
Brain & nerve
Brain & Nervous System
Breathing & Airway
Digestive emergency
Environmental
General emergency
Heart & Circulation
Heart & circulation
Infections
Mental Health
Metabolic
Pediatric emergency
Poisoning & Overdose
Poisoning & toxins
Pregnancy
Surgical emergency
Trauma & Injury
Trauma & injury
Airway & breathing
Airway & Breathing
Community Care
Critical Care
Diagnostic
Emergency Medication
Emergency Transport
EMS services
EMS transport
Environmental Care
Evaluation & Testing
Heart care
Life Support
Medical Transport
Mental Health
Rescue services
Trauma & injury
Trauma Care
484 services · 472 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
333 | More often than most peers in Emergency Medical Services |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
104 | More often than most peers in Emergency Medical Services |
| Emergency department visit with low level of medical decision making | Office visit | 99283 |
34 | More often than most peers in Emergency Medical Services |
| Critical care, first 30-74 minutes | Office visit | 99291 |
13 | Less often than most peers in Emergency Medical Services |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Merrill is an emergency medical services in Lawrence, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Dr. Merrill is listed at 1 General St, Lawrence, MA 01841. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (434) 981-9742. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Merrill's National Provider Identifier is 1386098093. 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
Dr. Merrill attended University of Virginia School of Medicine, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
Dr. Merrill has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Merrill the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Merrill. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.