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Dr. Alonzo P. Walker, MD
NPI1700838240
- Medicare services, 2019
- 122
- Part D claims, 2019
- 11
- Publications
- 7
- Hospital affiliations
- 1
- Industry payments
- $852
- Practice address
- 744 South Webster, Green Bay, WI 54301
- Practice phone
- Call (920) 445-7272
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Bellin Hospital - Mammography
Mammography / Breast Imaging Center · Green Bay, Wisconsin
Find Dr. Walker's professional email, personal email and mobile number
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Dr. Alonzo P. Walker is a surgical oncologist in Green Bay, Wisconsin
Dr. Walker practices at Bellin Hospital - Mammography in Green Bay, Wisconsin.
Dr. Walker's NPI, 1700838240, was assigned on May 16, 2006. Dr. Walker holds Wisconsin license 25739.
NPI and contact details
- NPI
- 1700838240NPI Registry (opens in a new tab)
- NPI enumeration date
- May 16, 2006
- NPI status
- Active
- Practice phone
- (920) 445-7272
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Alonzo P. Walker practices at Bellin Hospital - Mammography in Green Bay, Wisconsin
Dr. Walker's primary practice is Bellin Hospital - Mammography, at 744 South Webster, Green Bay, WI 54301. The practice phone is (920) 445-7272.
- Bellin Hospital - Mammography744 South Webster, Green Bay, WI 54301Phone(920) 445-7272
Source: Dmand AI Affiliation Data
Dr. Alonzo P. Walker is affiliated with 2 sites of care and 2 medical groups
Dr. Walker's primary practice is Bellin Hospital - Mammography in Green Bay, Wisconsin. Dr. Walker is also affiliated with Froedtert Hospital. The medical group on file is Froedtert & the Medical College of Wisconsin Community Physicians. Dmand AI also links Dr. Walker to 1 more medical group, named with a free account. Dr. Walker's employer is on file too: a breast imaging center.
Bellin Hospital - MammographyPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alonzo P. Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bellin Hospital - Mammography | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alonzo P. Walker is one of 33 surgical oncologists in Wisconsin
Surgical oncology is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 2086X0206X. Dr. Walker is licensed in Wisconsin.
Specialties and state licenses
- Surgical oncology, WisconsinPrimary
Surgical oncologists near Dr. Walker
Counts of surgical oncologists with a Dmand AI profile, by place and practice. Each opens the list.
33surgical oncologists in Wisconsin
2surgical oncologists in Green Bay
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Alonzo P. Walker billed Medicare for 122 services in 2019
CMS data shows 122 Medicare services from Dr. Walker across 4 procedure codes in 2019. Medicare paid $13,765 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2019122
Paid by Medicare$13,765
Procedure codes4
Dr. Walker's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 942019: 7817%
- Surgery
- 2018: 482019: 448%
Dr. Walker compared with the Wisconsin median for surgical oncologists, 2019
- Dr. Walker
- Wisconsin median
- Medicare services
- 122vs 9134% above
- Part D claims
- 11vs 1631% below
Medians across 29 surgical oncologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Walker's most billed Medicare procedure codes, 2019
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alonzo P. 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 100% 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
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Alonzo P. Walker wrote 11 Medicare Part D claims in 2019
In 2019, Dr. Walker wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $23 in total drug cost. In 2017, CMS named 14 claims across 1 drug.
Part D claims, 201911
Drugs named by CMS1
Total drug cost$23
Dr. Walker's most prescribed drugs by claims, 2019
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, 2017 to 2019
- 2017
- 2019
- Claims for drugs CMS names
- 2017: 142019: 1121%
Drugs named by CMS: 1 in 2019, 1 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Alonzo P. Walker has 7 publications on record
Dmand AI links 7 papers to Dr. Walker, published from 2011 to 2020. 2019 was the busiest year, with 2. The most frequent topics are Breast Neoplasms, Mastectomy, Segmental and Patient Positioning. Dr. Walker has published most often in Plast Surg Nurs. Dr. Walker's most frequent co-authors are Carmen Renee Bergom, MD, Keith A. Dookeran and Lyle Anthony Ignace, MD.
Papers7
Years published2011 to 2020
Dr. Walker's papers by year, 2011 to 2020
Topics Dr. Walker writes about most
- Breast Neoplasms
- Mastectomy, Segmental
- Patient Positioning
- Pilot Projects
- Prone Position
- Qualitative Research
- Radiation Injuries
Dr. Walker's most frequent co-authors
- Carmen Renee Bergom, MD2 shared papers
- Keith A. Dookeran1 shared paper
- Lyle Anthony Ignace, MD1 shared paper
Recent publications by Dr. Walker
Eur J Cancer Care (Engl)
Adaptation, PsychologicalBlack or African AmericanBreast Neoplasms
Breast NeoplasmsMastectomy, SegmentalNeoplasm Invasiveness
Body Mass IndexBreastBreast Neoplasms
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 surgical oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Alonzo P. Walker received $852 in industry payments from 2016 to 2024
CMS Open Payments shows 9 general payments to Dr. Walker from 7 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $318.
General payments to Dr. Walker by program year, 2016 to 2024
Companies that paid Dr. Walker the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Alonzo P. 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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. Alonzo P. 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. Alonzo P. Walker's NPI number?
Dr. Alonzo P. Walker's NPI number is 1700838240. It was assigned on May 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Alonzo P. Walker?
Dr. Alonzo P. Walker is a surgical oncologist in Green Bay, Wisconsin. The primary specialty in the NPI Registry is Surgical Oncology Physician (taxonomy code 2086X0206X).
Where does Dr. Alonzo P. Walker practice?
Dr. Walker practices at 744 South Webster, Green Bay, WI 54301. Dr. Walker's primary practice is Bellin Hospital - Mammography in Green Bay, Wisconsin. Dmand AI also links Dr. Walker to 1 medical group.
What is Dr. Alonzo P. Walker's office phone number?
The practice phone on file for Dr. Walker is (920) 445-7272.
What is Dr. Alonzo P. Walker's medical license number?
Dr. Walker holds Wisconsin license 25739.
Which hospitals is Dr. Alonzo P. Walker affiliated with?
Dr. Walker is affiliated with Froedtert Hospital.
What medical group is Dr. Alonzo P. Walker part of?
Dr. Walker is linked to Froedtert & the Medical College of Wisconsin Community Physicians. Dmand AI links Dr. Walker to 1 more medical group.
Does Dr. Alonzo P. Walker accept Medicare?
Yes. CMS data shows Dr. Walker billed Medicare for 122 services in 2019.
What services does Dr. Alonzo P. Walker bill to Medicare?
In 2019, Dr. Walker's most billed Medicare services were office visit, established patient (99213), surgery: blood and lymph system (38525) and surgery: blood and lymph system (38900).
What drugs does Dr. Alonzo P. Walker prescribe most?
In 2019 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Tramadol HCl.
Show 4 more questionsShow fewer questions
Has Dr. Alonzo P. Walker received payments from drug or device companies?
CMS Open Payments shows $852 in general payments to Dr. Walker from 7 companies from 2016 to 2024. The largest total came from Gilead Sciences, Inc.
How long has Dr. Alonzo P. Walker been practicing?
Dr. Walker's NPI was assigned in 2006.
Does Dr. Alonzo P. Walker do research?
Dmand AI links 7 publications to Dr. Walker, published from 2011 to 2020.
Who does Dr. Alonzo P. Walker publish with?
Dr. Walker's most frequent co-authors are Carmen Renee Bergom, MD (2 shared papers), Keith A. Dookeran (1 shared paper) and Lyle Anthony Ignace, MD (1 shared paper).
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