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DR. LOUIS MARCEL DAY M.D.
NPI 1922532647
Orthopaedic Surgery in Montclair, NJ

Active since April 19, 2017PECOS EnrolledAccepts Medicare Assignment
120 VALLEY RD, MONTCLAIR, NJ 07042(201) 490-4333 Get Directions Write a Review

NPPES record last updated: December 5, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 5, 2024, Apr 19, 2017 (2 updates tracked since 2017).

About Dr. Louis Marcel Day M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. LOUIS MARCEL DAY M.D. (NPI 1922532647) is an individual orthopaedic surgery provider in Montclair, New Jersey, licensed in New Jersey (25MA11976900) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS, is affiliated with Valley Hospital, and is a graduate of State University Of New York Downstate Medical Center (2017).

NPPES Registry Identity

NPI1922532647
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameDR. LOUIS MARCEL DAYCredential: M.D.
Location Address120 VALLEY RDMontclair, NJ 07042-2321
Mailing Address120 Valley RdMontclair, NJ 07042-2321 · (201) 490-4333
Phone(201) 490-4333
Sole ProprietorNo
Medical School CMSState University Of New York Downstate Medical CenterGraduated 2017
Enumeration DateApril 19, 2017
Last NPPES UpdateDecember 5, 20242 updates tracked since enumeration
NPPES CertifiedDecember 5, 2024
✔ NPI 1922532647 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in NJ · 25MA11976900
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
120 VALLEY RD, Montclair, NJ 07042
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Louis Marcel Day M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8426395534
PECOS Enrollment IDI20231003000369
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
161 services81 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
97 services97 patients
Aspiration and/or injection of fluid large joint using ultrasound guidance 20611
This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.
73 services39 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
60 services56 patients
X-ray of knee, 3 views 73562
An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.
37 services28 patients
X-ray of shoulder, minimum of 2 views 73030
An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.
29 services16 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Valley Hospital

Acute Care Hospitals · Paramus, NJ
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310012
Location4 Valley Health PlazaParamus, NJ 07652 · Bergen County
Emergency services Birthing friendly

St Joseph's University Medical Center Inc

Acute Care Hospitals · Paterson, NJ
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number310019
Location703 Main StPaterson, NJ 07503 · Passaic County
Birthing friendly

Hackensack Meridian Health, Mountainside Medical

Acute Care Hospitals · Montclair, NJ
2/5 CMS rating
OwnershipProprietary
CMS Certification Number310054
Location1 Bay AvenueMontclair, NJ 07042 · Essex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07042 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$98.09 typical visit price
range $63.84 – $190.92
Typical copayment $24.52 (range $15.96 – $47.73)
Most-billed visit code 99203
Established Patient
$79.09 typical visit price
range $20.97 – $155.92
Typical copayment $19.77 (range $5.24 – $38.98)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MISS MICHELLE INGA
Physician Assistant
120 VALLEY RD
MONTCLAIR, NJ 07042
Essex County (201) 490-4333
BARBARA MARIE HANNAN PA
Physician Assistant
120 VALLEY RD
MONTCLAIR, NJ 07042
Essex County (201) 490-4333

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Louis Day's NPI number?

The NPI number for Louis Day is 1922532647. It was assigned to this individual provider in the NPPES registry on April 19, 2017.

Where is Louis Day located?

Louis Day practices at 120 Valley Rd, Montclair, NJ 07042. The listed phone number is (201) 490-4333.

What is Louis Day's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Louis Day enrolled in Medicare?

Yes. Louis Day is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Louis Day affiliated with any hospitals?

According to CMS data, Louis Day is affiliated with Valley Hospital, St Joseph's University Medical Center Inc and Hackensack Meridian Health, Mountainside Medical.

When was this NPI record last updated?

The NPPES record for Louis Day was last updated on December 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.