Dr. Kathleen Brewer Grissett, MD
- Medicare services, 2024
- 483
- Medicare patients, 2024
- 75
- Part D claims, 2024
- 1,521
- Publications
- 1
- Industry payments
- $20,903
- Practice address
- 1543 Kingsley Ave, Orange Park, FL 32073
- Practice phone
- Call (904) 269-7200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
First Coast Mental Health P A
Orange Park, Florida
Find Dr. Grissett'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. Kathleen Brewer Grissett is a psychiatrist in Orange Park, Florida
Dr. Grissett practices at First Coast Mental Health P A in Orange Park, Florida.
Dr. Grissett's NPI, 1821170085, was assigned on October 19, 2006. Dr. Grissett graduated from USF Health Morsani College of Medicine in 2003. Dr. Grissett holds Florida license ME100502.
- NPI
- 1821170085NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7113081944
- NPI enumeration date
- October 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (904) 269-7200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kathleen Brewer Grissett practices at First Coast Mental Health P A in Orange Park, Florida
Dr. Grissett's primary practice is First Coast Mental Health P A, at 1543 Kingsley Ave, Orange Park, FL 32073 in Clay County. The practice phone is (904) 269-7200.
- First Coast Mental Health P A1543 Kingsley Ave, Orange Park, FL 32073 · Clay CountyPhone(904) 269-7200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kathleen Brewer Grissett is affiliated with 2 sites of care and 1 medical group
Dr. Grissett's primary practice is First Coast Mental Health P A in Orange Park, Florida. The medical group on file is First Coast Mental Health. Dmand AI also links Dr. Grissett to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Kathleen Brewer Grissett's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grissett practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| First Coast Mental Health P A | 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. Kathleen Brewer Grissett is one of 1,975 psychiatrists in Florida
Psychiatry is Dr. Grissett's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Grissett is board certified in child & adolescent psychiatry by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Grissett's licenses on file in 2 states: Florida and South Carolina.
Specialties and state licenses
- Psychiatry, FloridaPrimary
- Child and adolescent psychiatry, South Carolina
Clinical focus
Dmand AI lists ADHD, anxiety, bipolar disorder, depression and schizophrenia among the conditions Dr. Grissett treats.
Psychiatrists near Dr. Grissett
Counts of psychiatrists 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. Kathleen Brewer Grissett billed Medicare for 483 services in 2024
CMS data shows 483 Medicare services from Dr. Grissett across 4 procedure codes in 2024, for 75 Medicare patients. Medicare paid $29,422 for them. Every service was in an office.
Dr. Grissett's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3172024: 26317%
- Tests and treatments
- 2023: 2942024: 22025%
Dr. Grissett compared with the Florida median for psychiatrists, 2024
- Dr. Grissett
- Florida median
- Medicare services
- 483vs 2042.4 times
- Medicare patients
- 75vs 73Close to median
- Part D claims
- 1,268vs 2405.3 times
Medians across 1,952 psychiatrists in Florida with Dmand AI profiles that report each measure.
Dr. Grissett'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grissett and other psychiatrists in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kathleen Brewer Grissett treated 75 Medicare patients in 2024, average age 65
CMS counts 75 Medicare patients who saw Dr. Grissett in 2024. The largest group is 65 to 74, with 37 patients. 75% of them have depression, and 75% have high cholesterol. Their average risk score is 1.41, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Grissett's median patient age at 31, with 60% women.
Dr. Grissett's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Grissett's Medicare patients by sex, 2024
- Women5269%
- Men2331%
Chronic conditions among Dr. Grissett's Medicare patients, 2024
- Depression75%
- High cholesterol75%
- Mood disorders75%
- Anxiety71%
- High blood pressure65%
- Arthritis49%
- Diabetes44%
- Bipolar disorder35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grissett's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 31
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kathleen Brewer Grissett wrote 1,521 Medicare Part D claims in 2024
In 2024, Dr. Grissett wrote 1,521 Medicare Part D claims for 78 patients. 93% of them were for generic drugs. CMS names the drug for 1,268 of them, across 40 drugs with 11 or more claims each, at $108,774 in total drug cost. In 2023, CMS named 882 claims across 31 drugs.
Dr. Grissett's Part D claims by kind of drug, 2024
- Generic1,415 claims93%
- Brand-name and other106 claims7%
Dr. Grissett'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 Dr. Grissett's Part D claims, 2024
- Antipsychotics, patients 65 and over4%56 of 1,521 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: 8822024: 1,26844%
Drugs named by CMS: 40 in 2024, 31 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
Dr. Kathleen Brewer Grissett offers telehealth to Medicare patients
Dr. Grissett accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Grissett as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Kathleen Brewer Grissett has 1 publication on record
Dmand AI links 1 paper to Dr. Grissett in 2021. Dr. Grissett's most frequent co-authors are Nora Kathleen Burns, DO, Marc Adam Macaluso and Mohsin Raza.
Dr. Grissett's most frequent co-authors
Recent publications by Dr. Grissett
See who Dr. Grissett researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Grissett works with, so you can find a warm path to the right psychiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Kathleen Brewer Grissett received $20,903 in industry payments from 2016 to 2025
CMS Open Payments shows 1,327 general payments to Dr. Grissett from 42 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $2,394.
General payments to Dr. Grissett by program year, 2016 to 2025
General payments to Dr. Grissett by kind, 2016 to 2025
- Food and beverage$20,60299%
- Education$1511%
- Speaker and faculty fees$1501%
Companies that paid Dr. Grissett the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kathleen Brewer Grissett graduated from USF Health Morsani College of Medicine
Dr. Grissett graduated from USF Health Morsani College of Medicine in 2003.
- Medical school
- Board certified in child & adolescent psychiatry
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Kathleen Brewer Grissett accepts plans from 16 insurance carriers
Dr. Grissett is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- HCSC
- United Healthcare
- Cigna
- Elevance
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- +8 more carriersWith a free account
Plan types Dr. Grissett accepts, by number of carriers
- PPO11
- HMO9
- Medicare9
- POS4
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Kathleen Brewer Grissett'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 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 Dr. Kathleen Brewer Grissett
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. Kathleen Brewer Grissett's NPI number?
Dr. Kathleen Brewer Grissett's NPI number is 1821170085. It was assigned on October 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kathleen Brewer Grissett?
Dr. Kathleen Brewer Grissett is a psychiatrist in Orange Park, Florida. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Kathleen Brewer Grissett practice?
Dr. Grissett practices at 1543 Kingsley Ave, Orange Park, FL 32073. Dr. Grissett's primary practice is First Coast Mental Health P A in Orange Park, Florida. Dmand AI also links Dr. Grissett to 1 group practice or clinic.
What is Dr. Kathleen Brewer Grissett's office phone number?
The practice phone on file for Dr. Grissett is (904) 269-7200.
What is Dr. Kathleen Brewer Grissett's medical license number?
Dr. Grissett holds Florida license ME100502, one of the licenses on file in 2 states.
Which states has Dr. Kathleen Brewer Grissett been licensed in?
Dmand AI has state licenses on file for Dr. Grissett in Florida (2007 to 2026) and South Carolina (2004 to 2009).
What medical group is Dr. Kathleen Brewer Grissett part of?
Dr. Grissett is linked to First Coast Mental Health.
Does Dr. Kathleen Brewer Grissett accept Medicare?
Yes. CMS data shows Dr. Grissett billed Medicare for 483 services in 2024, and Dr. Grissett accepts Medicare assignment.
Does Dr. Kathleen Brewer Grissett offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Grissett as offering telehealth services.
How many Medicare patients does Dr. Kathleen Brewer Grissett see?
CMS counts 75 Medicare patients who saw Dr. Grissett in 2024, with an average age of 65.
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Is Dr. Kathleen Brewer Grissett board certified?
Yes. Dr. Grissett is board certified in child & adolescent psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Kathleen Brewer Grissett bill to Medicare?
In 2024, Dr. Grissett's most billed Medicare services were office visit, established patient (99214), psychiatric service (90833) and health assessment (96127).
Where did Dr. Kathleen Brewer Grissett go to medical school?
Dr. Grissett graduated from USF Health Morsani College of Medicine in 2003.
What drugs does Dr. Kathleen Brewer Grissett prescribe most?
In 2024 Medicare Part D data, Dr. Grissett's most prescribed drugs by claims were Alprazolam, Trazodone HCl and Bupropion XL.
Has Dr. Kathleen Brewer Grissett received payments from drug or device companies?
CMS Open Payments shows $20,903 in general payments to Dr. Grissett from 42 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Kathleen Brewer Grissett been practicing?
Dr. Grissett graduated from medical school in 2003, 23 years ago.
Does Dr. Kathleen Brewer Grissett do research?
Dmand AI links 1 publication to Dr. Grissett.
Who does Dr. Kathleen Brewer Grissett publish with?
Dr. Grissett's most frequent co-authors are Nora Kathleen Burns, DO (1 shared paper), Marc Adam Macaluso (1 shared paper) and Mohsin Raza (1 shared paper).
What insurance does Dr. Kathleen Brewer Grissett accept?
Dr. Grissett is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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