Semin Arthritis Rheum
AlgorithmsAnti-Citrullinated Protein AntibodiesAntirheumatic Agents
Katrina Ann Williamson
NPI1275038655PAC ID1557618485
- Medicare services, 2024
- 66
- Medicare patients, 2024
- 49
- Part D claims, 2024
- 335
- Publications
- 9
- Hospital affiliations
- 1
- Practice address
- 619 19th S St, Birmingham, AL 35211
- Practice phone
- Call (205) 731-9770
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University of Alabama Birmingham Hospital
Birmingham, Alabama
Find Katrina Williamson's professional email, personal email and mobile number
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Katrina Ann Williamson is a rheumatologist in Birmingham, Alabama
Katrina Williamson practices at University of Alabama Birmingham Hospital in Birmingham, Alabama.
Katrina Williamson's NPI, 1275038655, was assigned on March 27, 2018. Katrina Williamson graduated from University of Michigan Medical School in 2018. Katrina Williamson holds Alabama license MD.49177.
NPI and contact details
- NPI
- 1275038655NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557618485
- NPI enumeration date
- March 27, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (205) 731-9770
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Katrina Ann Williamson practices at University of Alabama Birmingham Hospital in Birmingham, Alabama
Katrina Williamson's primary practice is University of Alabama Birmingham Hospital, at 619 19th S St, Birmingham, AL 35211 in Jefferson County. The practice phone is (205) 731-9770.
- University of Alabama Birmingham Hospital619 19th S St, Birmingham, AL 35211 · Jefferson CountyPhone(205) 731-9770
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Katrina Ann Williamson is affiliated with 2 sites of care and 1 medical group
Katrina Williamson's primary practice is University of Alabama Birmingham Hospital in Birmingham, Alabama. Katrina Williamson is also affiliated with UAB Hospital. The medical group on file is UAB Medicine.
University of Alabama Birmingham HospitalPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Katrina Ann Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Katrina Williamson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Alabama Birmingham Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Katrina Ann Williamson is one of 84 rheumatologists in Alabama
Rheumatology is Katrina Williamson's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dmand AI has Katrina Williamson's licenses on file in 2 states: Alabama and Minnesota.
Specialties and state licenses
- Rheumatology, AlabamaPrimary
- Internal medicine, Minnesota
Rheumatologists near Katrina Williamson
Counts of rheumatologists 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
Katrina Ann Williamson billed Medicare for 66 services in 2024
CMS data shows 66 Medicare services from Katrina Williamson across 3 procedure codes in 2024, for 49 Medicare patients. Medicare paid $4,353 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202466
Medicare patients49
Paid by Medicare$4,353
Procedure codes3
Katrina Williamson's Medicare services by type, 2021 to 2024
- 2021
- 2024
- Other services
- 2021: 02024: 33
- Office and hospital visits
- 2021: 262024: 3327%
Katrina Williamson compared with the Alabama median for rheumatologists, 2024
- Katrina Williamson
- Alabama median
- Medicare services
- 66vs 2,66098% below
- Medicare patients
- 49vs 24880% below
- Part D claims
- 196vs 2,30692% below
Medians across 85 rheumatologists in Alabama with Dmand AI profiles that report each measure.
Katrina Williamson'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 Katrina Williamson and other rheumatologists in Alabama.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Katrina Ann Williamson treated 49 Medicare patients in 2024, average age 67
CMS counts 49 Medicare patients who saw Katrina Williamson in 2024. The largest group is 65 to 74, with 25 patients. 75% of them have arthritis, and 73% have high blood pressure. Their average risk score is 1.43, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Katrina Williamson's median patient age at 54, with 76% women.
Medicare patients, 202449
Average age67
Average risk score1.43
Katrina Williamson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Katrina Williamson's Medicare patients by sex, 2024
- Women3776%
- Men1224%
Chronic conditions among Katrina Williamson's Medicare patients, 2024
- Arthritis75%
- High blood pressure73%
- High cholesterol69%
- Chronic kidney disease31%
- Diabetes31%
- Mood disorders29%
- Depression27%
- Asthma22%
Share of Medicare patients with each condition. A patient can have several.
Katrina Williamson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women76%
- Men24%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Katrina Ann Williamson wrote 335 Medicare Part D claims in 2024
In 2024, Katrina Williamson wrote 335 Medicare Part D claims for 94 patients. 80% of them were for generic drugs. CMS names the drug for 196 of them, across 6 drugs with 11 or more claims each, at $5,220 in total drug cost. In 2023, CMS named 188 claims across 5 drugs.
Part D claims, 2024335
Drugs named by CMS6
Total drug cost$5,220
Part D patients94
Katrina Williamson's Part D claims by kind of drug, 2024
- Generic269 claims80%
- Brand-name66 claims20%
Katrina Williamson'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 Katrina Williamson's Part D claims, 2024
- Opioids4%15 of 335 claims
- Antibiotics8%27 of 335 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: 1882024: 1964%
Drugs named by CMS: 6 in 2024, 5 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
Katrina Ann Williamson offers telehealth to Medicare patients
Katrina Williamson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Katrina Williamson as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Katrina Ann Williamson has 9 publications on record
Dmand AI links 9 papers to Katrina Williamson, published from 2016 to 2025. 2025 was the busiest year, with 2. The most frequent topics are Antirheumatic Agents, Arthritis, Rheumatoid and Genetic Predisposition to Disease. Katrina Williamson has published most often in Mayo Clin Proc. Katrina Williamson's most frequent co-authors are Vanessa Lynn Kronzer, MD, Jeffrey A. Sparks, MD and Rohit Aggarwal, MD.
Papers9
Years published2016 to 2025
Katrina Williamson's papers by year, 2016 to 2025
Topics Katrina Williamson writes about most
- Antirheumatic Agents
- Arthritis, Rheumatoid
- Genetic Predisposition to Disease
- Nod2 Signaling Adaptor Protein
Katrina Williamson's most frequent co-authors
- Vanessa Lynn Kronzer, MD2 shared papers
- Jeffrey A. Sparks, MD2 shared papers
- Rohit Aggarwal, MD1 shared paper
Recent publications by Katrina Williamson
Ann Rheum Dis
AllelesArthritis, RheumatoidGenetic Predisposition to Disease
ArthralgiaArthritisDermatitis
Rheumatol Int
AutoantibodiesCOVID-19COVID-19 Vaccines
Biosensing TechniquesBlood GlucoseCoated Materials, Biocompatible
See who Katrina Williamson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Katrina Williamson works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Katrina Ann Williamson received $121 in industry payments in 2023
CMS Open Payments shows 1 general payment to Katrina Williamson from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. UCB, Inc. paid the most, $121.
Companies that paid Katrina Williamson the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Katrina Ann Williamson graduated from University of Michigan Medical School
Katrina Williamson graduated from University of Michigan Medical School in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Katrina Ann Williamson'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 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 |
| 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 Katrina Ann Williamson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Katrina Ann Williamson's NPI number?
Katrina Ann Williamson's NPI number is 1275038655. It was assigned on March 27, 2018, and it is active in the NPI Registry.
What does Katrina Ann Williamson specialize in?
Katrina Ann Williamson is a rheumatologist in Birmingham, Alabama. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Katrina Ann Williamson practice?
Katrina Williamson practices at 619 19th S St, Birmingham, AL 35211. Katrina Williamson's primary practice is University of Alabama Birmingham Hospital in Birmingham, Alabama.
What is Katrina Ann Williamson's office phone number?
The practice phone on file for Katrina Williamson is (205) 731-9770.
What is Katrina Ann Williamson's medical license number?
Katrina Williamson holds Alabama license MD.49177, one of the licenses on file in 2 states.
Which states has Katrina Ann Williamson been licensed in?
Dmand AI has state licenses on file for Katrina Williamson in Alabama and Minnesota.
Which hospitals is Katrina Ann Williamson affiliated with?
Katrina Williamson is affiliated with UAB Hospital.
What medical group is Katrina Ann Williamson part of?
Katrina Williamson is linked to UAB Medicine.
Does Katrina Ann Williamson accept Medicare?
Yes. CMS data shows Katrina Williamson billed Medicare for 66 services in 2024, and Katrina Williamson accepts Medicare assignment.
Does Katrina Ann Williamson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Katrina Williamson as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Katrina Ann Williamson see?
CMS counts 49 Medicare patients who saw Katrina Williamson in 2024, with an average age of 67.
What services does Katrina Ann Williamson bill to Medicare?
In 2024, Katrina Williamson's most billed Medicare services were medicare service (G2211), office visit, established patient (99215) and office visit, new patient (99205).
Where did Katrina Ann Williamson go to medical school?
Katrina Williamson graduated from University of Michigan Medical School in 2018.
What drugs does Katrina Ann Williamson prescribe most?
In 2024 Medicare Part D data, Katrina Williamson's most prescribed drugs by claims were Prednisone, Methotrexate and Hydroxychloroquine Sulfate.
Has Katrina Ann Williamson received payments from drug or device companies?
CMS Open Payments shows $121 in general payments to Katrina Williamson from 1 company from 2023 to 2023. The largest total came from UCB, Inc.
How long has Katrina Ann Williamson been practicing?
Katrina Williamson graduated from medical school in 2018, 8 years ago.
Does Katrina Ann Williamson do research?
Dmand AI links 9 publications to Katrina Williamson, published from 2016 to 2025.
Who does Katrina Ann Williamson publish with?
Katrina Williamson's most frequent co-authors are Vanessa Lynn Kronzer, MD (2 shared papers), Jeffrey A. Sparks, MD (2 shared papers) and Rohit Aggarwal, MD (1 shared paper).
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