Raymond Janowski

  • Washington, DC
  • Gastroenterologist
NPI1477972131PAC ID9436455805
Medicare services, 2024
692
Medicare patients, 2024
370
Part D claims, 2024
159
Publications
2
Hospital affiliations
1
Practice address
900 23rd St NW, Washington, DC 20037
Practice phone
Call (202) 716-4605
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

The George Washington University Hospital

Hospital · Washington, District of Columbia

See all 7 affiliations

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Raymond Janowski is a gastroenterologist in Washington, District of Columbia

Raymond Janowski practices at The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services.

Raymond Janowski's NPI, 1477972131, was assigned on April 10, 2014. Raymond Janowski graduated from Drexel University College of Medicine in 2014. Raymond Janowski holds District of Columbia license MD048502.

NPI and contact details
Medicare PAC ID
9436455805
NPI enumeration date
April 10, 2014
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(202) 716-4605
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
38
Medical school graduation
2014

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Raymond Janowski practices at The George Washington University Hospital in Washington, District of Columbia

Raymond Janowski's primary practice is The George Washington University Hospital, at 900 23rd St NW, Washington, DC 20037 in The District County. The practice phone is (202) 716-4605.

Source: Dmand AI Affiliation Data

Raymond Janowski is affiliated with 4 sites of care and 3 medical groups

Raymond Janowski's primary practice is The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services. The medical group on file is MedStar Medical Group. Dmand AI also links Raymond Janowski to 3 more group practices and clinics and 2 medical groups, each named with a free account.

See all 7 affiliations for Raymond Janowski

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Raymond Janowski's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Raymond Janowski practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
The George Washington University HospitalAvailable with a free account
+3 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Raymond Janowski is one of 76 gastroenterologists in District of Columbia

Gastroenterology is Raymond Janowski's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Raymond Janowski's licenses on file in 2 states: District of Columbia and Pennsylvania.

Specialties and state licenses

  • Gastroenterology, District of ColumbiaPrimaryLicense MD048502 · taxonomy 207RG0100X
  • Internal medicine, PennsylvaniaLicense MT206317 · taxonomy 207R00000X

Gastroenterologists near Raymond Janowski

Counts of gastroenterologists 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

Raymond Janowski billed Medicare for 692 services in 2024

CMS data shows 692 Medicare services from Raymond Janowski across 18 procedure codes in 2024, for 370 Medicare patients. Medicare paid $73,725 for them.

Medicare services, 2024692
Medicare patients370
Paid by Medicare$73,725
Procedure codes18

Raymond Janowski's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 3182024: 44239%
Surgery
2023: 2482024: 22310%
Other services
2023: 02024: 27

Where Raymond Janowski's Medicare services took place, 2024

  • In an office21531%
  • In a facility47769%

Raymond Janowski compared with the District of Columbia median for gastroenterologists, 2024

  • Raymond Janowski
  • District of Columbia median
Medicare services
692vs 2982.3 times
Medicare patients
370vs 20977% above
Part D claims
95vs 12524% below

Medians across 67 gastroenterologists in District of Columbia with Dmand AI profiles that report each measure.

Raymond Janowski'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.

See all procedures by Raymond Janowski

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Raymond Janowski treated 370 Medicare patients in 2024, average age 73

CMS counts 370 Medicare patients who saw Raymond Janowski in 2024. The largest group is 65 to 74, with 174 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 40% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Raymond Janowski's median patient age at 69, with 53% women.

Medicare patients, 2024370
Average age73
Average risk score1.53
Also on Medicaid40%

Raymond Janowski's Medicare patients by age, 2024

Raymond Janowski's Medicare patients by sex, 2024

  • Women20856%
  • Men16244%

Chronic conditions among Raymond Janowski's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis57%
  4. Diabetes41%
  5. Ischemic heart disease39%
  6. Chronic kidney disease33%
  7. COPD25%
  8. Cancer23%

Share of Medicare patients with each condition. A patient can have several.

Raymond Janowski's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 69

Patient panel by sex, all payers

  • Women53%
  • Men45%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Raymond Janowski wrote 159 Medicare Part D claims in 2024

In 2024, Raymond Janowski wrote 159 Medicare Part D claims for 72 patients. 84% of them were for generic drugs. CMS names the drug for 95 of them, across 3 drugs with 11 or more claims each, at $1,535 in total drug cost. In 2023, CMS named 75 claims across 4 drugs.

Part D claims, 2024159
Drugs named by CMS3
Total drug cost$1,535
Part D patients72

Raymond Janowski's Part D claims by kind of drug, 2024

  • Generic134 claims84%
  • Brand-name25 claims16%

Raymond Janowski'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 Raymond Janowski's Part D claims, 2024

  • Antibiotics8%12 of 159 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, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 752024: 9527%

Drugs named by CMS: 3 in 2024, 4 in 2023.

See all prescribing by Raymond Janowski

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

Raymond Janowski ranks in the 88th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare

Raymond Janowski accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 178 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Raymond Janowski, more than 88% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Where Raymond Janowski ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
88th percentile178 procedures
Colonoscopy
73rd percentile76 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Raymond Janowski has 2 publications on record

Dmand AI links 2 papers to Raymond Janowski in 2018. Raymond Janowski's most frequent co-authors are Douglas Graham Adler, MD, Todd H. Baron, MD and Robert M. Coben, MD.

Papers2

Raymond Janowski's most frequent co-authors

Recent publications by Raymond Janowski

See all 2 publications and co-authors

See who Raymond Janowski researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Raymond Janowski works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Raymond Janowski received $2,201 in industry payments from 2017 to 2025

CMS Open Payments shows 49 general payments to Raymond Janowski from 15 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 96% of the total. Boston Scientific Corporation paid the most, $804.

General payments to Raymond Janowski by program year, 2017 to 2025

General payments to Raymond Janowski by kind, 2017 to 2025

$2.2Kin total
  • Food and beverage$2,10296%
  • Education$994%

Companies that paid Raymond Janowski the most, 2017 to 2025

Share is of all general payments to this clinician.

See all payments to Raymond Janowski

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Raymond Janowski graduated from Drexel University College of Medicine

Raymond Janowski graduated from Drexel University College of Medicine in 2014.

  1. Medical schoolDrexel University College of Medicine

Source: Dmand AI Professional Profile Data

Sources for Raymond Janowski's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Raymond Janowski

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Raymond Janowski's NPI number?

Raymond Janowski's NPI number is 1477972131. It was assigned on April 10, 2014, and it is active in the NPI Registry.

What does Raymond Janowski specialize in?

Raymond Janowski is a gastroenterologist in Washington, District of Columbia. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Raymond Janowski practice?

Raymond Janowski practices at 900 23rd St NW, Washington, DC 20037. Raymond Janowski's primary practice is The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services. Dmand AI also links Raymond Janowski to 3 group practices and clinics and 2 medical groups.

What is Raymond Janowski's office phone number?

The practice phone on file for Raymond Janowski is (202) 716-4605.

What is Raymond Janowski's medical license number?

Raymond Janowski holds District of Columbia license MD048502, one of the licenses on file in 2 states.

Which states has Raymond Janowski been licensed in?

Dmand AI has state licenses on file for Raymond Janowski in District of Columbia and Pennsylvania.

Which hospitals is Raymond Janowski affiliated with?

Raymond Janowski practices at The George Washington University Hospital in Washington, District of Columbia.

What medical group is Raymond Janowski part of?

Raymond Janowski is linked to MedStar Medical Group. Dmand AI links Raymond Janowski to 2 more medical groups.

Does Raymond Janowski accept Medicare?

Yes. CMS data shows Raymond Janowski billed Medicare for 692 services in 2024, and Raymond Janowski accepts Medicare assignment.

How many Medicare patients does Raymond Janowski see?

CMS counts 370 Medicare patients who saw Raymond Janowski in 2024, with an average age of 73.

Show 7 more questionsShow fewer questions

What services does Raymond Janowski bill to Medicare?

In 2024, Raymond Janowski's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99213) and office visit, established patient (99214).

Where did Raymond Janowski go to medical school?

Raymond Janowski graduated from Drexel University College of Medicine in 2014.

What drugs does Raymond Janowski prescribe most?

In 2024 Medicare Part D data, Raymond Janowski's most prescribed drugs by claims were Pantoprazole Sodium, Omeprazole and Sod Sulf-Potass Sulf-Mag Sulf.

Has Raymond Janowski received payments from drug or device companies?

CMS Open Payments shows $2,201 in general payments to Raymond Janowski from 15 companies from 2017 to 2025. The largest total came from Boston Scientific Corporation.

How long has Raymond Janowski been practicing?

Raymond Janowski graduated from medical school in 2014, 12 years ago.

Does Raymond Janowski do research?

Dmand AI links 2 publications to Raymond Janowski.

Who does Raymond Janowski publish with?

Raymond Janowski's most frequent co-authors are Douglas Graham Adler, MD (1 shared paper), Todd H. Baron, MD (1 shared paper) and Robert M. Coben, MD (1 shared paper).

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