AdenocarcinomaCancer-Associated FibroblastsEsophageal Neoplasms
Dr. Robert Charles Walker, MD
NPI1457318016
- Medicare services, 2021
- 610
- Part D claims, 2022
- 11
- Publications
- 12
- Industry payments
- $4,951
- Affiliated sites
- 1
- Practice address
- 1201 S Grand Blvd, Saint Louis, MO 63104
- Practice phone
- Call (256) 341-2010
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Decatur Morgan Hospital - Decatur Campus
Saint Louis, Missouri
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Dr. Robert Charles Walker is a general surgeon in Saint Louis, Missouri
Dr. Walker practices at Decatur Morgan Hospital - Decatur Campus in Saint Louis, Missouri.
Dr. Walker's NPI, 1457318016, was assigned on April 27, 2006. Dr. Walker holds Alabama license 00010579.
NPI and contact details
- NPI
- 1457318016NPI Registry (opens in a new tab)
- NPI enumeration date
- April 27, 2006
- NPI status
- Active
- Practice phone
- (256) 341-2010
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Robert Charles Walker practices at Decatur Morgan Hospital - Decatur Campus in Saint Louis, Missouri
Dr. Walker's primary practice is Decatur Morgan Hospital - Decatur Campus, at 1201 S Grand Blvd, Saint Louis, MO 63104 in Saint Louis City. The practice phone is (256) 341-2010.
- Decatur Morgan Hospital - Decatur Campus1201 S Grand Blvd, Saint Louis, MO 63104 · Saint Louis CityPhone(256) 341-2010
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robert Charles Walker is affiliated with 2 sites of care and 1 medical group
Dr. Walker's primary practice is Decatur Morgan Hospital - Decatur Campus in Saint Louis, Missouri. The medical group on file is Surgical Associates of North Alabama. Dmand AI also links Dr. Walker to 1 more group practice or clinic, named with a free account.
Decatur Morgan Hospital - Decatur CampusPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Robert Charles Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Decatur Morgan Hospital - Decatur Campus | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Charles Walker is one of 593 general surgeons in Missouri
Surgery is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Walker is licensed in Alabama.
Specialties and state licenses
- Surgery, AlabamaPrimary
General surgeons near Dr. Walker
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. Robert Charles Walker billed Medicare for 610 services in 2021
CMS data shows 610 Medicare services from Dr. Walker across 13 procedure codes in 2021. Medicare paid $37,736 for them.
Medicare services, 2021610
Paid by Medicare$37,736
Procedure codes13
Dr. Walker's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 7002021: 43438%
- Tests and treatments
- 2020: 1452021: 11719%
- Imaging
- 2020: 652021: 4432%
- Surgery
- 2020: 422021: 1564%
Where Dr. Walker's Medicare services took place, 2021
- In an office45575%
- In a facility15525%
Dr. Walker compared with the Missouri median for general surgeons, 2021
- Dr. Walker
- Missouri median
- Medicare services
- 610vs 1693.6 times
- Part D claims
- 11vs 4173% below
Medians across 570 general surgeons in Missouri with Dmand AI profiles that report each measure.
Dr. Walker's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Walker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Walker and other general surgeons in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Charles Walker's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Walker's median patient age at 71, with 86% women.
Dr. Walker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women86%
- Men14%
Source: Dmand AI Patient Panel Data
Dr. Robert Charles Walker wrote 11 Medicare Part D claims in 2022
In 2022, Dr. Walker wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $221 in total drug cost. In 2021, CMS named 305 claims across 9 drugs.
Part D claims, 202211
Drugs named by CMS1
Total drug cost$221
Dr. Walker's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 3052022: 1196%
Drugs named by CMS: 1 in 2022, 9 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Robert Charles Walker has 12 publications on record
Dmand AI links 12 papers to Dr. Walker, published from 2018 to 2025. 2025 was the busiest year, with 3. The most frequent topics are Esophageal Neoplasms, Adenocarcinoma and Neoadjuvant Therapy. Dr. Walker has published most often in Br J Surg.
Papers12
Years published2018 to 2025
Dr. Walker's papers by year, 2018 to 2025
Topics Dr. Walker writes about most
- Esophageal Neoplasms
- Adenocarcinoma
- Neoadjuvant Therapy
- Cancer-Associated Fibroblasts
- Esophageal Squamous Cell Carcinoma
- Esophagectomy
- Lymph Node Excision
- Postoperative Complications
Recent publications by Dr. Walker
AdenocarcinomaBiomarkers, TumorEsophageal Neoplasms
Carcinoma, Squamous CellEsophageal NeoplasmsEsophagectomy
AdenocarcinomaAntigens, NeoplasmHistocompatibility Antigens Class I
See who Dr. Walker researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Walker works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Robert Charles Walker received $4,951 in industry payments from 2016 to 2023
CMS Open Payments shows 122 general payments to Dr. Walker from 34 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 62% of the total. Davol Inc. paid the most, $2,285.
General payments to Dr. Walker by program year, 2016 to 2023
General payments to Dr. Walker by kind, 2016 to 2023
$5Kin total
- Food and beverage$3,06462%
- Travel and lodging$1,88738%
Companies that paid Dr. Walker the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Robert Charles Walker'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Robert Charles Walker
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. Robert Charles Walker's NPI number?
Dr. Robert Charles Walker's NPI number is 1457318016. It was assigned on April 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Charles Walker?
Dr. Robert Charles Walker is a general surgeon in Saint Louis, Missouri. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Robert Charles Walker practice?
Dr. Walker practices at 1201 S Grand Blvd, Saint Louis, MO 63104. Dr. Walker's primary practice is Decatur Morgan Hospital - Decatur Campus in Saint Louis, Missouri. Dmand AI also links Dr. Walker to 1 group practice or clinic.
What is Dr. Robert Charles Walker's office phone number?
The practice phone on file for Dr. Walker is (256) 341-2010.
What is Dr. Robert Charles Walker's medical license number?
Dr. Walker holds Alabama license 00010579.
What medical group is Dr. Robert Charles Walker part of?
Dr. Walker is linked to Surgical Associates of North Alabama.
Does Dr. Robert Charles Walker accept Medicare?
Yes. CMS data shows Dr. Walker billed Medicare for 610 services in 2021.
What services does Dr. Robert Charles Walker bill to Medicare?
In 2021, Dr. Walker's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99204).
What drugs does Dr. Robert Charles Walker prescribe most?
In 2022 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Cilostazol.
Has Dr. Robert Charles Walker received payments from drug or device companies?
CMS Open Payments shows $4,951 in general payments to Dr. Walker from 34 companies from 2016 to 2023. The largest total came from Davol Inc.
How long has Dr. Robert Charles Walker been practicing?
Dr. Walker graduated from medical school in 1981, 45 years ago.
Does Dr. Robert Charles Walker do research?
Dmand AI links 12 publications to Dr. Walker, published from 2018 to 2025.
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