Dr. Frederick K. Williams II, MD

  • Fort Lauderdale, FL
  • Internist
NPI1457310260PAC ID1355238643
Medicare services, 2024
94
Medicare patients, 2024
92
Part D claims, 2024
241
Publications
3
Hospital affiliations
1
Practice address
4725 N Federal Hwy, Fort Lauderdale, FL 33308
Practice phone
Call (954) 771-8000
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Holy Cross Health

Hospital · Fort Lauderdale, Florida

See all 4 affiliations

Find Dr. Williams' 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.

View contacts for free

Dr. Frederick K. Williams II is an internist in Fort Lauderdale, Florida

Dr. Williams practices at Holy Cross Health in Fort Lauderdale, Florida, part of Trinity Health.

Dr. Williams' NPI, 1457310260, was assigned on March 21, 2006. Dr. Williams graduated from USF Health Morsani College of Medicine in 1989. Dr. Williams holds Florida license ME103240.

NPI and contact details
Medicare PAC ID
1355238643
NPI enumeration date
March 21, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(954) 771-8000
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
63
Medical school graduation
1989

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Frederick K. Williams II practices at Holy Cross Health in Fort Lauderdale, Florida

Dr. Williams' primary practice is Holy Cross Health, at 4725 N Federal Hwy, Fort Lauderdale, FL 33308 in Broward County. The practice phone is (954) 771-8000.

  • Holy Cross Health
    4725 N Federal Hwy, Fort Lauderdale, FL 33308 · Broward CountyPhone(954) 771-8000

Source: Dmand AI Affiliation Data

Dr. Frederick K. Williams II is affiliated with 2 sites of care and 2 medical groups

Dr. Williams' primary practice is Holy Cross Health in Fort Lauderdale, Florida, part of Trinity Health. The medical group on file is Holy Cross Medical Group. Dmand AI also links Dr. Williams to 1 more group practice or clinic and 1 medical group, each named with a free account.

See all 4 affiliations for Dr. Williams

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Frederick K. Williams II's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Holy Cross HealthAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Dr. Williams practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across Trinity Health and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Frederick K. Williams II is one of 9,009 internists in Florida

Internal medicine is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Williams is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Williams' licenses on file in 3 states: Florida, Maryland and District of Columbia.

Specialties and state licenses

  • Internal medicine, FloridaPrimaryLicense ME103240 · 2008 to 2027 · taxonomy 207R00000X
  • Maryland license2003 to 2009
  • District of Columbia license1992 to 2004

Clinical focus

Dmand AI lists acute sinusitis, acute stomach ulcer, alcohol use disorders, asthma, atrial fibrillation and flutter, chronic anemia, chronic hypertension and chronic obstructive pulmonary disease (COPD) among the conditions Dr. Williams treats.

Internists near Dr. Williams

Counts of internists 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. Frederick K. Williams II billed Medicare for 94 services in 2024

CMS data shows 94 Medicare services from Dr. Williams across 4 procedure codes in 2024, for 92 Medicare patients. Medicare paid $6,210 for them.

Medicare services, 202494
Medicare patients92
Paid by Medicare$6,210
Procedure codes4

Dr. Williams' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1282024: 8236%
Other services
2023: 02024: 12

Where Dr. Williams' Medicare services took place, 2024

  • In an office7277%
  • In a facility2223%

Dr. Williams compared with the Florida median for internists, 2024

  • Dr. Williams
  • Florida median
Medicare services
94vs 55583% below
Medicare patients
92vs 21557% below
Part D claims
63vs 46686% below

Medians across 8,488 internists in Florida with Dmand AI profiles that report each measure.

Dr. Williams' 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 Dr. Williams

Need commercial claims for Dr. Williams?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williams and other internists in Florida.

Book a meeting

Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Frederick K. Williams II treated 92 Medicare patients in 2024, average age 75

CMS counts 92 Medicare patients who saw Dr. Williams in 2024. The largest group is 65 to 74, with 42 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.33, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 69, with 43% women.

Medicare patients, 202492
Average age75
Average risk score1.33

Dr. Williams' Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Williams' Medicare patients by sex, 2024

  • Women2527%
  • Men6773%

Chronic conditions among Dr. Williams' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis50%
  4. Ischemic heart disease42%
  5. Diabetes30%
  6. Anxiety29%
  7. Cancer27%
  8. COPD25%

Share of Medicare patients with each condition. A patient can have several.

Dr. Williams' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 69

Patient panel by sex, all payers

  • Women43%
  • Men56%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Frederick K. Williams II wrote 241 Medicare Part D claims in 2024

In 2024, Dr. Williams wrote 241 Medicare Part D claims for 75 patients. 88% of them were for generic drugs. CMS names the drug for 63 of them, across 5 drugs with 11 or more claims each, at $592 in total drug cost. In 2023, CMS named 120 claims across 8 drugs.

Part D claims, 2024241
Drugs named by CMS5
Total drug cost$592
Part D patients75

Dr. Williams' Part D claims by kind of drug, 2024

  • Generic211 claims88%
  • Brand-name30 claims12%

Dr. Williams' 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.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1202024: 6348%

Drugs named by CMS: 5 in 2024, 8 in 2023.

See all prescribing by Dr. Williams

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. Frederick K. Williams II offers telehealth to Medicare patients

Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Williams as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

For MedTech and pharma teams

Find internists like Dr. Williams by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Dr. Frederick K. Williams II has 3 publications on record

Dmand AI links 3 papers to Dr. Williams in 2015. 2015 was the busiest year, with 2. Dr. Williams has published most often in Am J Case Rep. Dr. Williams' most frequent co-authors are Thomas Abraham, MD, Scott M. Alter, MD and William Benda, MD.

Papers3

Dr. Williams' most frequent co-authors

Recent publications by Dr. Williams

See all 3 publications and co-authors

See who Dr. Williams researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Williams works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Frederick K. Williams II received $24 in industry payments in 2023

CMS Open Payments shows 1 general payment to Dr. Williams from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Hologic Inc paid the most, $24.

Companies that paid Dr. Williams the most, 2023 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Williams

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Frederick K. Williams II graduated from USF Health Morsani College of Medicine

Dr. Williams graduated from USF Health Morsani College of Medicine in 1989.

  1. Medical schoolUSF Health Morsani College of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Frederick K. Williams II accepts plans from 11 insurance carriers

Dr. Williams is in network with 11 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Excellus BlueCross BlueShield
  • Blue Cross Blue Shield of Michigan
  • Molina
  • Regence Health Plans
  • United Healthcare
  • Alliant Health Plans
  • +3 more carriersWith a free account

Plan types Dr. Williams accepts, by number of carriers

  1. Medicare7
  2. HMO6
  3. PPO6
  4. POS5
  5. EPO3
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Frederick K. Williams II'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 Dr. Frederick K. Williams II

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. Frederick K. Williams II's NPI number?

Dr. Frederick K. Williams II's NPI number is 1457310260. It was assigned on March 21, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Frederick K. Williams II?

Dr. Frederick K. Williams II is an internist in Fort Lauderdale, Florida. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Frederick K. Williams II practice?

Dr. Williams practices at 4725 N Federal Hwy, Fort Lauderdale, FL 33308. Dr. Williams' primary practice is Holy Cross Health in Fort Lauderdale, Florida, part of Trinity Health. Dmand AI also links Dr. Williams to 1 group practice or clinic and 1 medical group.

What is Dr. Frederick K. Williams II's office phone number?

The practice phone on file for Dr. Williams is (954) 771-8000.

What is Dr. Frederick K. Williams II's medical license number?

Dr. Williams holds Florida license ME103240, one of the licenses on file in 3 states.

Which states has Dr. Frederick K. Williams II been licensed in?

Dmand AI has state licenses on file for Dr. Williams in Florida (2008 to 2027), Maryland (2003 to 2009) and District of Columbia (1992 to 2004).

Which hospitals is Dr. Frederick K. Williams II affiliated with?

Dr. Williams practices at Holy Cross Health in Fort Lauderdale, Florida.

What medical group is Dr. Frederick K. Williams II part of?

Dr. Williams is linked to Holy Cross Medical Group. Dmand AI links Dr. Williams to 1 more medical group.

Does Dr. Frederick K. Williams II accept Medicare?

Yes. CMS data shows Dr. Williams billed Medicare for 94 services in 2024, and Dr. Williams accepts Medicare assignment.

Does Dr. Frederick K. Williams II offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Williams as offering telehealth services.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Frederick K. Williams II see?

CMS counts 92 Medicare patients who saw Dr. Williams in 2024, with an average age of 75.

Is Dr. Frederick K. Williams II board certified?

Yes. Dr. Williams is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Frederick K. Williams II bill to Medicare?

In 2024, Dr. Williams' most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and hospital inpatient care (99232).

Where did Dr. Frederick K. Williams II go to medical school?

Dr. Williams graduated from USF Health Morsani College of Medicine in 1989.

What drugs does Dr. Frederick K. Williams II prescribe most?

In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.

Has Dr. Frederick K. Williams II received payments from drug or device companies?

CMS Open Payments shows $24 in general payments to Dr. Williams from 1 company from 2023 to 2023. The largest total came from Hologic Inc.

How long has Dr. Frederick K. Williams II been practicing?

Dr. Williams graduated from medical school in 1989, 37 years ago.

Does Dr. Frederick K. Williams II do research?

Dmand AI links 3 publications to Dr. Williams.

Who does Dr. Frederick K. Williams II publish with?

Dr. Williams' most frequent co-authors are Thomas Abraham, MD (1 shared paper), Scott M. Alter, MD (1 shared paper) and William Benda, MD (1 shared paper).

What insurance does Dr. Frederick K. Williams II accept?

Dr. Williams is in network with 11 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

Selling to internal medicine practices?

See internists 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

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)