Dr. Arnab Majumder, MD
- Medicare services, 2024
- 285
- Medicare patients, 2024
- 186
- Part D claims, 2024
- 34
- MIPS score, 2024
- 84
- Hospital affiliations
- 2
- Practice address
- 1040 N Mason Rd, Saint Louis, MO 63141
- Practice phone
- Call (314) 362-4964
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Washington University School of Medicine
Saint Louis, Missouri
Find Dr. Majumder's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Arnab Majumder is a general surgeon in Saint Louis, Missouri
Dr. Majumder practices at Washington University School of Medicine in Saint Louis, Missouri.
Dr. Majumder's NPI, 1144514423, was assigned on June 4, 2011. Dr. Majumder graduated from Ohio State University College of Medicine in 2011. Dr. Majumder holds Missouri license 2019012692.
- NPI
- 1144514423NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466788419
- NPI enumeration date
- June 4, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (314) 362-4964
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Arnab Majumder practices at Washington University School of Medicine in Saint Louis, Missouri
Dr. Majumder's primary practice is Washington University School of Medicine, at 1040 N Mason Rd, Saint Louis, MO 63141 in Saint Louis County. The practice phone is (314) 362-4964.
- Washington University School of Medicine1040 N Mason Rd, Saint Louis, MO 63141 · Saint Louis CountyPhone(314) 362-4964
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Arnab Majumder is affiliated with 4 sites of care and 1 medical group
Dr. Majumder's primary practice is Washington University School of Medicine in Saint Louis, Missouri. Dr. Majumder is also affiliated with Barnes-Jewish Hospital. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. Majumder to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Arnab Majumder's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Majumder practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Washington University School of Medicine | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Arnab Majumder is one of 593 general surgeons in Missouri
Surgery is Dr. Majumder's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Majumder is licensed in Missouri.
Specialties and state licenses
- Surgery, MissouriPrimary
General surgeons near Dr. Majumder
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Arnab Majumder billed Medicare for 285 services in 2024
CMS data shows 285 Medicare services from Dr. Majumder across 10 procedure codes in 2024, for 186 Medicare patients. Medicare paid $73,127 for them.
Dr. Majumder's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2172024: 2122%
- Surgery
- 2023: 652024: 7312%
Where Dr. Majumder's Medicare services took place, 2024
- In an office18164%
- In a facility10436%
Dr. Majumder compared with the Missouri median for general surgeons, 2024
- Dr. Majumder
- Missouri median
- Medicare services
- 285vs 16969% above
- Medicare patients
- 186vs 12746% above
- Part D claims
- 12vs 4171% below
Medians across 570 general surgeons in Missouri with Dmand AI profiles that report each measure.
Dr. Majumder's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Majumder and other general surgeons in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Arnab Majumder treated 186 Medicare patients in 2024, average age 69
CMS counts 186 Medicare patients who saw Dr. Majumder in 2024. The largest group is 65 to 74, with 89 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 16% are also on Medicaid. Their average risk score is 2.02, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Majumder's median patient age at 67, with 39% women.
Dr. Majumder's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Majumder's Medicare patients by sex, 2024
- Women8546%
- Men10154%
Chronic conditions among Dr. Majumder's Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Arthritis51%
- Chronic kidney disease38%
- Mood disorders37%
- Anxiety36%
- Depression35%
- Diabetes33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Majumder's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women39%
- Men61%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Arnab Majumder wrote 34 Medicare Part D claims in 2024
In 2024, Dr. Majumder wrote 34 Medicare Part D claims for 28 patients. 100% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $35 in total drug cost. In 2017, CMS named 12 claims across 1 drug.
Dr. Majumder's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Majumder's Part D claims, 2024
- Opioids74%25 of 34 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2017 to 2024
- 2017
- 2024
- Claims for drugs CMS names
- 2017: 122024: 12No change
Drugs named by CMS: 1 in 2024, 1 in 2017.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Arnab Majumder scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Majumder for performance year 2024, reported as part of a group. Dr. Majumder accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Majumder as offering telehealth. CMS counts 19 procedures of hernia repair (minimally invasive) by Dr. Majumder, more than 87% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Majumder's MIPS scores, performance year 2024
- 84of 100Final score
- 71.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Majumder ranks in Medicare procedure volume
- Hernia repair (minimally invasive)
- 87th percentile19 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Arnab Majumder received $15,790 in industry payments from 2016 to 2025
CMS Open Payments shows 21 general payments to Dr. Majumder from 5 drug and device companies from 2016 to 2025. Education make up the largest share, 82% of the total. Intuitive Surgical, Inc. paid the most, $14,885.
General payments to Dr. Majumder by program year, 2016 to 2025
General payments to Dr. Majumder by kind, 2016 to 2025
- Education$13,01682%
- Food and beverage$1,50210%
- Speaker and faculty fees$1,0006%
- Travel and lodging$2722%
Companies that paid Dr. Majumder the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Arnab Majumder graduated from Ohio State University College of Medicine
Dr. Majumder graduated from Ohio State University College of Medicine in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Arnab Majumder's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Arnab Majumder
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Arnab Majumder's NPI number?
Dr. Arnab Majumder's NPI number is 1144514423. It was assigned on June 4, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Arnab Majumder?
Dr. Arnab Majumder is a general surgeon in Saint Louis, Missouri. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Arnab Majumder practice?
Dr. Majumder practices at 1040 N Mason Rd, Saint Louis, MO 63141. Dr. Majumder's primary practice is Washington University School of Medicine in Saint Louis, Missouri. Dmand AI also links Dr. Majumder to 1 hospital and 1 group practice or clinic.
What is Dr. Arnab Majumder's office phone number?
The practice phone on file for Dr. Majumder is (314) 362-4964.
What is Dr. Arnab Majumder's medical license number?
Dr. Majumder holds Missouri license 2019012692.
Which hospitals is Dr. Arnab Majumder affiliated with?
Dr. Majumder is affiliated with Barnes-Jewish Hospital. Dmand AI links Dr. Majumder to 1 more hospital.
What medical group is Dr. Arnab Majumder part of?
Dr. Majumder is linked to WashU Medicine Psychiatry.
Does Dr. Arnab Majumder accept Medicare?
Yes. CMS data shows Dr. Majumder billed Medicare for 285 services in 2024, and Dr. Majumder accepts Medicare assignment.
Does Dr. Arnab Majumder offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Majumder as offering telehealth services.
What is Dr. Arnab Majumder's MIPS score?
Dr. Majumder's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Arnab Majumder see?
CMS counts 186 Medicare patients who saw Dr. Majumder in 2024, with an average age of 69.
What services does Dr. Arnab Majumder bill to Medicare?
In 2024, Dr. Majumder's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and hospital inpatient care (99231).
Where did Dr. Arnab Majumder go to medical school?
Dr. Majumder graduated from Ohio State University College of Medicine in 2011.
What drugs does Dr. Arnab Majumder prescribe most?
In 2024 Medicare Part D data, Dr. Majumder's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Arnab Majumder received payments from drug or device companies?
CMS Open Payments shows $15,790 in general payments to Dr. Majumder from 5 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Arnab Majumder been practicing?
Dr. Majumder graduated from medical school in 2011, 15 years ago.
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