Arjun Gaurang Merchant, MD
Retina Specialist (Ophthalmology) Physician · Saint Louis, MO
Arjun Gaurang Merchant, MD is a retina specialist (ophthalmology) physician with a practice address in Saint Louis, Missouri, and NPI 1093342040, issued on Mar 26, 2020. Check the license (Missouri 2024019704, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Arjun Gaurang Merchant
- Credential
- MD
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License number
- 2024019704 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4901 Forest Park Ave, Saint Louis, MO 63108
- Phone
- (314) 362-3937
- Enumerated
- Mar 26, 2020
- Record last updated
- Apr 17, 2025
- Fax
- (314) 362-3725
- Medicaid ID
- 200145160 MO
- Medicare enrollment
- Enrolled (PECOS I20240822003109); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 2020
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 50 in Missouri → Look up another NPI →
Also registered at 4901 Forest Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eva Aagaard, MDGeneral Practice Physician1144286097
- Ashley Ahlbrand, ODOptometrist1215669007
- Muhammad Nabeel Akbar, MDNeuro-ophthalmology Physician1780204149
- Ashley Altman, FNPNurse Practitioner1457882417
- Kelly Amerson, WHNPWomen's Health Nurse Practitioner1205993169
- Milan Anadkat, MDDermatology Physician1639267149
Verify Arjun Gaurang Merchant in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2024019704Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
107 Medicare Part D claims for 51 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Prednisolone Acetate31 claims
- Dorzolamide-Timolol13 claims
- Moxifloxacin12 claims
- Tobramycin12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Arjun Gaurang Merchant among 50 retina specialist (ophthalmology) physician records in Missouri
Arjun Gaurang Merchant, MD is one of 50 retina specialist (ophthalmology) physician records with a practice address in Missouri. 94% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 80% of them.
- NPI issued2020 · 80% of these records are older, 14% newer
- In a Medicare fileYes · 94% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated2020 · median 2011 among the 41 with a school on file
- Record last updated2025 · 18% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in Missouri
There are 50 retina specialist (ophthalmology) physician records in Missouri.
All 50 in Missouri → Every provider in Saint Louis → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Catherine Gilbert, MDSaint Louis, MO 631081578207676
- Nicholas Janigian, MDSaint Louis, MO 631081972233948
- Aaron Lee, MDSaint Louis, MO 631081063649713
- Hasan Muqri, MDSaint Louis, MO 631081154995751
- Kisha Piggott, MDSaint Louis, MO 631081316236482
- Prabakar Rao, MDSaint Louis, MO 631081417959115
- Parth Shah, DOSaint Louis, MO 631081265937411
- Vichar Trivedi, MDSaint Louis, MO 631081245812411
Common questions
What is Arjun Gaurang Merchant, MD's NPI number?
Arjun Gaurang Merchant, MD's National Provider Identifier (NPI) is 1093342040, issued on Mar 26, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Arjun Gaurang Merchant, MD located?
The NPPES record lists a practice address at 4901 Forest Park Ave, Saint Louis, MO, 63108. Phone: (314) 362-3937. Providers update this record themselves, so call before visiting.
How can I verify Arjun Gaurang Merchant, MD's license?
NPPES lists Missouri license number 2024019704, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Arjun Gaurang Merchant, MD prescribe under Medicare Part D?
In 2024, Arjun Gaurang Merchant, MD had 107 Medicare Part D claims for 51 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.