Grant Patrick Barker

  • Macclenny, FL
  • Emergency medicine physician
NPI1477013555PAC ID4082956024
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
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Personal email
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Mobile number
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Social profiles

Primary practice

Ed Fraser Memorial Hospital

Hospital · Macclenny, Florida

See all 7 affiliations

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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 and contact details
Medicare PAC ID
4082956024
NPI enumeration date
March 23, 2019
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(904) 259-3151
Professional email
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Personal email
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Mobile number
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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.

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.

See all 7 affiliations for Grant Barker

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.

EHR by site
SiteEHR vendor and product
Ed Fraser Memorial HospitalAvailable with a free account
+2 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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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, GeorgiaPrimaryLicense 90868 · 2021 to 2025 · taxonomy 207P00000X
  • General practice, FloridaLicense ME154935 · 2022 to 2026 · taxonomy 208D00000X
  • Virginia license2022 to 2024

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.

Medicare services, 2024562
Medicare patients513
Paid by Medicare$66,122
Procedure codes4

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.

See all procedures by Grant Barker

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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.

Medicare patients, 2024513
Average age74
Average risk score1.99
Also on Medicaid29%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis54%
  4. Ischemic heart disease48%
  5. Diabetes45%
  6. Anxiety41%
  7. Mood disorders41%
  8. 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.

Part D claims, 2024552
Drugs named by CMS17
Total drug cost$2,554
Part D patients332

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.

See all prescribing by Grant Barker

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)

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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.

Papers6
Years published2018 to 2023

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

Recent publications by Grant Barker

See all 6 publications and co-authors

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.

How network discovery works

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.

See all payments to Grant Barker

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.

  1. Medical schoolUniversity of Miami, Miller School of Medicine
  2. Board certified in emergency medicineAmerican Board of 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

  1. Medicaid2
  2. Medicare2
  3. EPO1
  4. HMO1
  5. POS1
  6. PPO1

Source: Dmand AI Insurance Network Data

Sources for Grant Patrick Barker'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)
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
Insurance carriers and plan typesDmand AI Insurance Network 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 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.

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