Grant Patrick Barker
- Medicare services, 2024
- 562
- Medicare patients, 2024
- 513
- Part D claims, 2024
- 552
- Publications
- 6
- Hospital affiliations
- 2
- Practice address
- 159 N 3rd St, Macclenny, FL 32063
- Practice phone
- Call (904) 259-3151
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Grant Barker'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.
Grant Patrick Barker is an emergency medicine physician in Macclenny, Florida
Grant Barker practices at Ed Fraser Memorial Hospital in Macclenny, Florida, part of Baker County Medical Services.
Grant Barker's NPI, 1477013555, was assigned on March 23, 2019. Grant Barker graduated from University of Miami, Miller School of Medicine in 2019. Grant Barker's Georgia license number on file is 90868.
- NPI
- 1477013555NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082956024
- NPI enumeration date
- March 23, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (904) 259-3151
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Grant Patrick Barker practices at Ed Fraser Memorial Hospital in Macclenny, Florida
Grant Barker's primary practice is Ed Fraser Memorial Hospital, at 159 N 3rd St, Macclenny, FL 32063 in Baker County. The practice phone is (904) 259-3151.
- Ed Fraser Memorial Hospital159 N 3rd St, Macclenny, FL 32063 · Baker CountyPhone(904) 259-3151
Source: Dmand AI Affiliation Data
Grant Patrick Barker is affiliated with 3 sites of care and 4 medical groups
Grant Barker's primary practice is Ed Fraser Memorial Hospital in Macclenny, Florida, part of Baker County Medical Services. Grant Barker is also affiliated with UF Health Jacksonville. The medical group on file is Ed Fraser Memorial Hospital. Dmand AI also links Grant Barker to 3 more medical groups and 1 skilled nursing facility, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Grant Patrick Barker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Grant Barker practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ed Fraser Memorial Hospital | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Baker County Medical Services and 6.2K+ hospitals, with verified contacts in the same login.
Grant Patrick Barker is one of 3,847 emergency medicine physicians in Florida
Emergency medicine is Grant Barker's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Grant Barker is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Grant Barker's licenses on file in 3 states: Georgia, Florida and Virginia.
Specialties and state licenses
- Emergency medicine, GeorgiaPrimary
- General practice, Florida
- Virginia license
Emergency medicine physicians near Grant Barker
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
Grant Patrick Barker billed Medicare for 562 services in 2024
CMS data shows 562 Medicare services from Grant Barker across 4 procedure codes in 2024, for 513 Medicare patients. Medicare paid $66,122 for them. Every service was in a facility, such as a hospital, rather than an office.
Grant Barker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6242024: 56210%
Grant Barker compared with the Florida median for emergency medicine physicians, 2024
- Grant Barker
- Florida median
- Medicare services
- 562vs 30882% above
- Medicare patients
- 513vs 27785% above
- Part D claims
- 366vs 844.4 times
Medians across 3,699 emergency medicine physicians in Florida with Dmand AI profiles that report each measure.
Grant Barker'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 Grant Barker?
Medicare shows one payer. Book a meeting to get commercial claims data for Grant Barker and other emergency medicine physicians in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Grant Patrick Barker treated 513 Medicare patients in 2024, average age 74
CMS counts 513 Medicare patients who saw Grant Barker in 2024. The largest group is 75 to 84, with 178 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.99, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Grant Barker's median patient age at 42, with 53% women.
Grant Barker's Medicare patients by age, 2024
Grant Barker's Medicare patients by sex, 2024
- Women30359%
- Men21041%
Chronic conditions among Grant Barker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Ischemic heart disease48%
- Diabetes45%
- Anxiety41%
- Mood disorders41%
- Chronic kidney disease40%
Share of Medicare patients with each condition. A patient can have several.
Grant Barker'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
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Grant Patrick Barker wrote 552 Medicare Part D claims in 2024
In 2024, Grant Barker wrote 552 Medicare Part D claims for 332 patients. 92% of them were for generic drugs. CMS names the drug for 366 of them, across 17 drugs with 11 or more claims each, at $2,554 in total drug cost. In 2023, CMS named 290 claims across 13 drugs.
Grant Barker's Part D claims by kind of drug, 2024
- Generic507 claims92%
- Brand-name45 claims8%
Grant Barker'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 Grant Barker's Part D claims, 2024
- Opioids5%27 of 552 claims
- Antibiotics32%177 of 552 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: 2902024: 36626%
Drugs named by CMS: 17 in 2024, 13 in 2023.
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 Grant Patrick Barker takes part in Medicare
Grant Barker 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Grant Patrick Barker has 6 publications on record
Dmand AI links 6 papers to Grant Barker, published from 2018 to 2023. 2018 was the busiest year, with 2. The most frequent topics are Patient Satisfaction, Clinical Competence and Internet. Grant Barker's most frequent co-authors are Chester John Donnally, MD, Faheem Wagid Guirgis, MD and Nathan H. Lebwohl, MD.
Grant Barker's papers by year, 2018 to 2023
Topics Grant Barker writes about most
- Patient Satisfaction
- Clinical Competence
- Internet
- Neurosurgery
- Orthopedics
- Physician-Patient Relations
- Social Media
Grant Barker's most frequent co-authors
- Chester John Donnally, MD3 shared papers
- Faheem Wagid Guirgis, MD2 shared papers
- Nathan H. Lebwohl, MD2 shared papers
Recent publications by Grant Barker
See who Grant Barker researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Grant Barker 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
Grant Patrick Barker received $35 in industry payments from 2022 to 2024
CMS Open Payments shows 2 general payments to Grant Barker from 2 drug and device companies from 2022 to 2024. Food and beverage make up the largest share, 100% of the total. CSL Behring paid the most, $21.
General payments to Grant Barker by program year, 2022 to 2024
Companies that paid Grant Barker the most, 2022 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Grant Patrick Barker graduated from University of Miami, Miller School of Medicine
Grant Barker graduated from University of Miami, Miller School of Medicine in 2019.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Grant Patrick Barker accepts plans from 4 insurance carriers
Grant Barker is in network with 4 carriers, including Excellus BlueCross BlueShield, CMS Medicare and Elevance. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- CMS Medicare
- Elevance
- GA State Medicaid
Plan types Grant Barker accepts, by number of carriers
- Medicaid2
- Medicare2
- EPO1
- HMO1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Grant Patrick Barker'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) |
| 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 Grant Patrick Barker
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Grant Patrick Barker's NPI number?
Grant Patrick Barker's NPI number is 1477013555. It was assigned on March 23, 2019, and it is active in the NPI Registry.
What does Grant Patrick Barker specialize in?
Grant Patrick Barker is an emergency medicine physician in Macclenny, Florida. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Grant Patrick Barker practice?
Grant Barker practices at 159 N 3rd St, Macclenny, FL 32063. Grant Barker's primary practice is Ed Fraser Memorial Hospital in Macclenny, Florida, part of Baker County Medical Services. Dmand AI also links Grant Barker to 3 medical groups and 1 skilled nursing facility.
What is Grant Patrick Barker's office phone number?
The practice phone on file for Grant Barker is (904) 259-3151.
What is Grant Patrick Barker's medical license number?
Grant Barker's Georgia license number on file is 90868, one of the licenses on file in 3 states.
Which states has Grant Patrick Barker been licensed in?
Dmand AI has state licenses on file for Grant Barker in Georgia (2021 to 2025), Florida (2022 to 2026) and Virginia (2022 to 2024).
Which hospitals is Grant Patrick Barker affiliated with?
Grant Barker practices at Ed Fraser Memorial Hospital in Macclenny, Florida. Grant Barker is also affiliated with UF Health Jacksonville.
What medical group is Grant Patrick Barker part of?
Grant Barker is linked to Ed Fraser Memorial Hospital. Dmand AI links Grant Barker to 3 more medical groups.
Does Grant Patrick Barker accept Medicare?
Yes. CMS data shows Grant Barker billed Medicare for 562 services in 2024, and Grant Barker accepts Medicare assignment.
How many Medicare patients does Grant Patrick Barker see?
CMS counts 513 Medicare patients who saw Grant Barker in 2024, with an average age of 74.
Show 9 more questionsShow fewer questions
Is Grant Patrick Barker board certified?
Yes. Grant Barker is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Grant Patrick Barker bill to Medicare?
In 2024, Grant Barker's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and critical care (99291).
Where did Grant Patrick Barker go to medical school?
Grant Barker graduated from University of Miami, Miller School of Medicine in 2019.
What drugs does Grant Patrick Barker prescribe most?
In 2024 Medicare Part D data, Grant Barker's most prescribed drugs by claims were Prednisone, Ondansetron ODT and Cephalexin.
Has Grant Patrick Barker received payments from drug or device companies?
CMS Open Payments shows $35 in general payments to Grant Barker from 2 companies from 2022 to 2024. The largest total came from CSL Behring.
How long has Grant Patrick Barker been practicing?
Grant Barker graduated from medical school in 2019, 7 years ago.
Does Grant Patrick Barker do research?
Dmand AI links 6 publications to Grant Barker, published from 2018 to 2023.
Who does Grant Patrick Barker publish with?
Grant Barker's most frequent co-authors are Chester John Donnally, MD (3 shared papers), Faheem Wagid Guirgis, MD (2 shared papers) and Nathan H. Lebwohl, MD (2 shared papers).
What insurance does Grant Patrick Barker accept?
Grant Barker is in network with 4 carriers, including Excellus BlueCross BlueShield, CMS Medicare and Elevance. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
Selling to emergency medicine practices?
See emergency medicine physicians in Florida by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card