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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ARJUN GAURANG MERCHANT MD
NPI 1093342040
Ophthalmology - Retina Specialist in Long Beach, CA

Active since March 26, 2020PECOS EnrolledAccepts Medicare Assignment
4300 LONG BEACH BLVD STE 300, LONG BEACH, CA 90807(562) 984-7024(562) 984-9477 Get Directions Write a Review

NPPES record last updated: October 12, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 12, 2026, Sep 15, 2026, Jul 2, 2024 and 1 more (4 updates tracked since 2020).

About Dr. Arjun Gaurang Merchant Md NPPES

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

DR. ARJUN GAURANG MERCHANT MD (NPI 1093342040) is an individual retina specialist in Long Beach, California, licensed in California (A209017) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and is a graduate of University Of Texas Medical School At Houston (2020).

NPPES Registry Identity

NPI1093342040
Entity TypeIndividualMale
Primary Taxonomy207WX0107X
Provider Legal NameDR. ARJUN GAURANG MERCHANTCredential: MD
Location Address4300 LONG BEACH BLVD STE 300Long Beach, CA 90807-2008
Mailing Address4300 Long Beach Blvd Ste 300Long Beach, CA 90807-2008 · (562) 984-7024 · Fax (562) 984-9477
Phone(562) 984-7024
Fax(562) 984-9477
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At HoustonGraduated 2020
Enumeration DateMarch 26, 2020
Last NPPES UpdateOctober 12, 20264 updates tracked since enumeration
NPPES CertifiedOctober 12, 2026
✔ NPI 1093342040 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmology · Retina SpecialistAllopathic & Osteopathic Physicians
Taxonomy Code207WX0107X
License✔ Licensed in CA · A209017
Definition
An ophthalmologist who specializes in the diagnosis and treatment of vitreoretinal diseases.
4300 LONG BEACH BLVD STE 300, Long Beach, CA 90807
Open in Google Maps ↗

Other Identifiers 1

Medicaid1093342040CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Arjun Gaurang Merchant Md 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 ID5496294472
PECOS Enrollment IDI20240822003109
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.

Medicare Billing Reassignment

Medicare enrollment records show Arjun Merchant reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Washington University
1,588 mi
End-Stage Renal Disease (ESRD) Treatment
4950 CHILDRENS PL
Saint Louis, MO 63110
  • Reassigned Medicare billing, Missouri enrollment
  • 105 clinicians in this Medicare group
NPI 1841221116 (314) 362-7211

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

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.

Imaging of retina 92134
Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.
52 services45 patients
Injection, aflibercept, 1 mg J0178
Aflibercept injection is a treatment for certain eye conditions that affect vision. It works by blocking abnormal blood vessel growth and leakage in the eye, which can cause vision loss. The medication is administered directly into the eye by a healthcare professional.
44 services16 patients
Injection of drug into eye 67028
An injection into the eye is a procedure where a medication is delivered directly into your eye to treat various conditions. A local anesthetic is applied to numb the eye, ensuring minimal discomfort. The drug helps manage diseases like macular degeneration or diabetic retinopathy.
23 services21 patients
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.
22 services19 patients

Hospital Affiliations CMS Care Compare

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

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number260032
LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90807 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
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.

DR. VIREN RANA DO
Ophthalmology (Retina Specialist)
4300 LONG BEACH BLVD STE 300
LONG BEACH, CA 90807
Los Angeles County (562) 984-7024
ANTHONY M DEBEUS MD
Ophthalmology (Retina Specialist)
4300 LONG BEACH BLVD STE 300
LONG BEACH, CA 90807
Los Angeles County (562) 984-7024

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 Arjun Merchant's NPI number?

The NPI number for Arjun Merchant is 1093342040. It was assigned to this individual provider in the NPPES registry on March 26, 2020.

Where is Arjun Merchant located?

Arjun Merchant practices at 4300 Long Beach Blvd Ste 300, Long Beach, CA 90807. The listed phone number is (562) 984-7024.

What is Arjun Merchant's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.

Is Arjun Merchant enrolled in Medicare?

Yes. Arjun Merchant 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.

Which organization bills Medicare for Arjun Merchant's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Arjun Merchant reassigns Medicare benefits to Washington University (Saint Louis, MO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Arjun Merchant's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Arjun Merchant affiliated with any hospitals?

According to CMS data, Arjun Merchant is affiliated with Barnes Jewish Hospital.

When was this NPI record last updated?

The NPPES record for Arjun Merchant was last updated on October 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 days 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.