Dr. Ayanna D. Walker, MD
- Medicare services, 2024
- 141
- Medicare patients, 2024
- 147
- Part D claims, 2024
- 22
- Publications
- 16
- Hospital affiliations
- 1
- Practice address
- 700 West Oak Street, Kissimmee, FL 34741
- Practice phone
- Call (407) 846-2266
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Walker'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. Ayanna D. Walker is an emergency medicine physician in Kissimmee, Florida
Dr. Walker practices at HCA Florida Osceola Hospital in Kissimmee, Florida, part of HCA Healthcare.
Dr. Walker's NPI, 1093079865, was assigned on June 27, 2012. Dr. Walker graduated from Morehouse School Of Medicine in 2012. Dr. Walker holds Florida license ME121053.
- NPI
- 1093079865NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991940207
- NPI enumeration date
- June 27, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (407) 846-2266
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ayanna D. Walker practices at HCA Florida Osceola Hospital in Kissimmee, Florida
Dr. Walker's primary practice is HCA Florida Osceola Hospital, at 700 West Oak Street, Kissimmee, FL 34741 in Osceola County. The practice phone is (407) 846-2266.
- HCA Florida Osceola Hospital700 West Oak Street, Kissimmee, FL 34741 · Osceola CountyPhone(407) 846-2266
Source: Dmand AI Affiliation Data
Dr. Ayanna D. Walker is affiliated with 1 site of care and 1 medical group
Dr. Walker's primary practice is HCA Florida Osceola Hospital in Kissimmee, Florida, part of HCA Healthcare. The medical group on file is Emergency Medicine Services of Florida.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ayanna D. 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 |
|---|---|
| HCA Florida Osceola Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ayanna D. Walker is one of 3,847 emergency medicine physicians in Florida
Emergency medicine is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Walker is board certified in emergency medical services by the American Board of Emergency Medicine. Dr. Walker is licensed in Florida.
Specialties and state licenses
- Emergency medicine, FloridaPrimary
Emergency medicine physicians near Dr. Walker
Counts of emergency medicine physicians 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. Ayanna D. Walker billed Medicare for 141 services in 2024
CMS data shows 141 Medicare services from Dr. Walker across 2 procedure codes in 2024, for 147 Medicare patients. Medicare paid $20,321 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Walker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1632024: 14113%
Dr. Walker compared with the Florida median for emergency medicine physicians, 2024
- Dr. Walker
- Florida median
- Medicare services
- 141vs 30854% below
- Medicare patients
- 147vs 27747% below
- Part D claims
- 11vs 8487% below
Medians across 3,699 emergency medicine physicians in Florida with Dmand AI profiles that report each measure.
Dr. Walker'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.
Need commercial claims for Dr. Walker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Walker and other emergency medicine physicians in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ayanna D. Walker treated 147 Medicare patients in 2024, average age 74
CMS counts 147 Medicare patients who saw Dr. Walker in 2024. The largest group is 75 to 84, with 55 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 35% are also on Medicaid. Their average risk score is 3.41, 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. Walker's median patient age at 42, with 60% women.
Dr. Walker's Medicare patients by age, 2024
Dr. Walker's Medicare patients by sex, 2024
- Women7048%
- Men7752%
Chronic conditions among Dr. Walker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes61%
- Arthritis60%
- Mood disorders57%
- Ischemic heart disease56%
- Chronic kidney disease54%
- Depression50%
Share of Medicare patients with each condition. A patient can have several.
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 42
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ayanna D. Walker wrote 22 Medicare Part D claims in 2024
In 2024, Dr. Walker wrote 22 Medicare Part D claims for 11 patients. 91% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $56 in total drug cost. In 2017, CMS named 36 claims across 2 drugs.
Dr. Walker's Part D claims by kind of drug, 2024
- Generic20 claims91%
- Brand-name and other2 claims9%
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: 362019: 1169%
Drugs named by CMS: 1 in 2019, 2 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
How Dr. Ayanna D. Walker takes part in Medicare
Dr. Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ayanna D. Walker has 16 publications on record
Dmand AI links 16 papers to Dr. Walker, published from 2016 to 2025. 2021 was the busiest year, with 4. Dr. Walker has published most often in Cureus. Dr. Walker's most frequent co-authors are Latha Ganti, MD, Maria Alejandra Tassone, DO and Nubaha Elahi, MD.
Dr. Walker's papers by year, 2016 to 2025
Dr. Walker's most frequent co-authors
- Latha Ganti, MD13 shared papers
- Maria Alejandra Tassone, DO6 shared papers
- Nubaha Elahi, MD3 shared papers
Recent publications by Dr. Walker
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 emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ayanna D. Walker received $274 in industry payments from 2018 to 2022
CMS Open Payments shows 3 general payments to Dr. Walker from 3 drug and device companies from 2018 to 2022. Food and beverage make up the largest share, 100% of the total. Abiomed paid the most, $136.
General payments to Dr. Walker by program year, 2018 to 2022
Companies that paid Dr. Walker the most, 2018 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ayanna D. Walker has 1 award and honors on record
Dmand AI lists 1 award for Dr. Walker, most recently AOA Inductee 2011 in 2011.
Awards and honors for Dr. Walker
- 2011
- AOA Inductee 2011
Source: Dmand AI Professional Profile Data
Dr. Ayanna D. Walker graduated from Morehouse School Of Medicine
Dr. Walker graduated from Morehouse School Of Medicine in 2012. Dr. Walker is a member of AOA.
- Medical school
- Board certified in emergency medical services
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Ayanna D. Walker accepts plans from 5 insurance carriers
Dr. Walker is in network with 5 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- HCSC
- RI State Medicaid
Plan types Dr. Walker accepts, by number of carriers
- Medicare2
- PPO2
- EPO1
- HMO1
- Medicaid1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ayanna D. 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 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) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Ayanna D. 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. Ayanna D. Walker's NPI number?
Dr. Ayanna D. Walker's NPI number is 1093079865. It was assigned on June 27, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Ayanna D. Walker?
Dr. Ayanna D. Walker is an emergency medicine physician in Kissimmee, Florida. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Ayanna D. Walker practice?
Dr. Walker practices at 700 West Oak Street, Kissimmee, FL 34741. Dr. Walker's primary practice is HCA Florida Osceola Hospital in Kissimmee, Florida, part of HCA Healthcare.
What is Dr. Ayanna D. Walker's office phone number?
The practice phone on file for Dr. Walker is (407) 846-2266.
What is Dr. Ayanna D. Walker's medical license number?
Dr. Walker holds Florida license ME121053.
Which hospitals is Dr. Ayanna D. Walker affiliated with?
Dr. Walker practices at HCA Florida Osceola Hospital in Kissimmee, Florida.
What medical group is Dr. Ayanna D. Walker part of?
Dr. Walker is linked to Emergency Medicine Services of Florida.
Does Dr. Ayanna D. Walker accept Medicare?
Yes. CMS data shows Dr. Walker billed Medicare for 141 services in 2024, and Dr. Walker accepts Medicare assignment.
How many Medicare patients does Dr. Ayanna D. Walker see?
CMS counts 147 Medicare patients who saw Dr. Walker in 2024, with an average age of 74.
Is Dr. Ayanna D. Walker board certified?
Yes. Dr. Walker is board certified in emergency medical services by the American Board of Emergency Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Ayanna D. Walker bill to Medicare?
In 2024, Dr. Walker's most billed Medicare services were emergency department visit (99285) and critical care (99291).
Where did Dr. Ayanna D. Walker go to medical school?
Dr. Walker graduated from Morehouse School Of Medicine in 2012.
What drugs does Dr. Ayanna D. Walker prescribe most?
In 2019 Medicare Part D data, Dr. Walker's most prescribed drugs by claims were Oxycodone-Acetaminophen.
Has Dr. Ayanna D. Walker received payments from drug or device companies?
CMS Open Payments shows $274 in general payments to Dr. Walker from 3 companies from 2018 to 2022. The largest total came from Abiomed.
How long has Dr. Ayanna D. Walker been practicing?
Dr. Walker graduated from medical school in 2012, 14 years ago.
Does Dr. Ayanna D. Walker do research?
Dmand AI links 16 publications to Dr. Walker, published from 2016 to 2025.
Who does Dr. Ayanna D. Walker publish with?
Dr. Walker's most frequent co-authors are Latha Ganti, MD (13 shared papers), Maria Alejandra Tassone, DO (6 shared papers) and Nubaha Elahi, MD (3 shared papers).
What insurance does Dr. Ayanna D. Walker accept?
Dr. Walker is in network with 5 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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