Calcium ChannelsComaMigraine with Aura
Dr. Charles F. Guardia III, MD
NPI1841464641PAC ID9436378726
- Medicare services, 2024
- 1,332
- Medicare patients, 2024
- 467
- Part D claims, 2024
- 1,268
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 100 Reserve Rd, Danbury, CT 06810
- Practice phone
- Call (203) 739-7742
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nuvance Health Medical Practice CT, Inc.
Danbury, Connecticut
Find Dr. Guardia's professional email, personal email and mobile number
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Dr. Charles F. Guardia III is a neurologist in Danbury, Connecticut
Dr. Guardia practices at Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut.
Dr. Guardia's NPI, 1841464641, was assigned on April 14, 2008. Dr. Guardia holds Connecticut license 52764.
NPI and contact details
- NPI
- 1841464641NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9436378726
- NPI enumeration date
- April 14, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 739-7742
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles F. Guardia III practices at Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut
Dr. Guardia's primary practice is Nuvance Health Medical Practice CT, Inc., at 100 Reserve Rd, Danbury, CT 06810 in Western Ct County. The practice phone is (203) 739-7742.
- Nuvance Health Medical Practice CT, Inc.100 Reserve Rd, Danbury, CT 06810 · Western Ct CountyPhone(203) 739-7742
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Charles F. Guardia III is affiliated with 6 sites of care and 3 medical groups
Dr. Guardia's primary practice is Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut. Dr. Guardia is also affiliated with Northwell Danbury Hospital. The medical group on file is Danbury Medical Group. Dmand AI also links Dr. Guardia to 1 more hospital, 3 group practices and clinics and 2 medical groups, each named with a free account.
Nuvance Health Medical Practice CT, Inc.Primary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Charles F. Guardia III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guardia practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nuvance Health Medical Practice CT, Inc. | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Charles F. Guardia III is one of 302 neurologists in Connecticut
Neurology is Dr. Guardia's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Guardia is licensed in Connecticut.
Specialties and state licenses
- Neurology, ConnecticutPrimary
Neurologists near Dr. Guardia
Counts of neurologists 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. Charles F. Guardia III billed Medicare for 1,332 services in 2024
CMS data shows 1,332 Medicare services from Dr. Guardia across 18 procedure codes in 2024, for 467 Medicare patients. Medicare paid $113,080 for them.
Medicare services, 20241,332
Medicare patients467
Paid by Medicare$113,080
Procedure codes18
Dr. Guardia's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7012024: 699No change
- Other services
- 2023: 02024: 400
- Tests and treatments
- 2023: 2582024: 23310%
Where Dr. Guardia's Medicare services took place, 2024
- In an office94671%
- In a facility38629%
Dr. Guardia compared with the Connecticut median for neurologists, 2024
- Dr. Guardia
- Connecticut median
- Medicare services
- 1,332vs 2236.0 times
- Medicare patients
- 467vs 1573.0 times
- Part D claims
- 1,057vs 2414.4 times
Medians across 293 neurologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Guardia'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 Dr. Guardia?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Guardia and other neurologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles F. Guardia III treated 467 Medicare patients in 2024, average age 77
CMS counts 467 Medicare patients who saw Dr. Guardia in 2024. The largest group is 75 to 84, with 195 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.73, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Guardia's median patient age at 69, with 49% women.
Medicare patients, 2024467
Average age77
Average risk score1.73
Also on Medicaid18%
Dr. Guardia's Medicare patients by age, 2024
Dr. Guardia's Medicare patients by sex, 2024
- Women22348%
- Men24452%
Chronic conditions among Dr. Guardia's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Ischemic heart disease43%
- Stroke or TIA43%
- Mood disorders42%
- Anxiety36%
- Depression36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Guardia's 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
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Charles F. Guardia III wrote 1,268 Medicare Part D claims in 2024
In 2024, Dr. Guardia wrote 1,268 Medicare Part D claims for 297 patients. 92% of them were for generic drugs. CMS names the drug for 1,057 of them, across 33 drugs with 11 or more claims each, at $251,072 in total drug cost. In 2023, CMS named 790 claims across 27 drugs.
Part D claims, 20241,268
Drugs named by CMS33
Total drug cost$251,072
Part D patients297
Dr. Guardia's Part D claims by kind of drug, 2024
- Generic1,172 claims92%
- Brand-name and other96 claims8%
Dr. Guardia'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. Guardia's Part D claims, 2024
- Antipsychotics, patients 65 and over2%28 of 1,268 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: 7902024: 1,05734%
Drugs named by CMS: 33 in 2024, 27 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. Charles F. Guardia III offers telehealth to Medicare patients
Dr. Guardia accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Guardia as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Charles F. Guardia III has 1 publication on record
Dmand AI links 1 paper to Dr. Guardia in 2019.
Papers1
Recent publications by Dr. Guardia
See who Dr. Guardia researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Guardia works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Charles F. Guardia III received $431 in industry payments from 2016 to 2022
CMS Open Payments shows 21 general payments to Dr. Guardia from 12 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. ACADIA Pharmaceuticals Inc paid the most, $106.
General payments to Dr. Guardia by program year, 2016 to 2022
Companies that paid Dr. Guardia the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Charles F. Guardia III'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)Doctors and Clinicians Utilization Data (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) |
| 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. Charles F. Guardia III
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. Charles F. Guardia III's NPI number?
Dr. Charles F. Guardia III's NPI number is 1841464641. It was assigned on April 14, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles F. Guardia III?
Dr. Charles F. Guardia III is a neurologist in Danbury, Connecticut. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Charles F. Guardia III practice?
Dr. Guardia practices at 100 Reserve Rd, Danbury, CT 06810. Dr. Guardia's primary practice is Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut. Dmand AI also links Dr. Guardia to 1 hospital, 3 group practices and clinics and 2 medical groups.
What is Dr. Charles F. Guardia III's office phone number?
The practice phone on file for Dr. Guardia is (203) 739-7742.
What is Dr. Charles F. Guardia III's medical license number?
Dr. Guardia holds Connecticut license 52764.
Which hospitals is Dr. Charles F. Guardia III affiliated with?
Dr. Guardia is affiliated with Northwell Danbury Hospital. Dmand AI links Dr. Guardia to 1 more hospital.
What medical group is Dr. Charles F. Guardia III part of?
Dr. Guardia is linked to Danbury Medical Group. Dmand AI links Dr. Guardia to 2 more medical groups.
Does Dr. Charles F. Guardia III accept Medicare?
Yes. CMS data shows Dr. Guardia billed Medicare for 1,332 services in 2024, and Dr. Guardia accepts Medicare assignment.
Does Dr. Charles F. Guardia III offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Guardia as offering telehealth services.
How many Medicare patients does Dr. Charles F. Guardia III see?
CMS counts 467 Medicare patients who saw Dr. Guardia in 2024, with an average age of 77.
Show 5 more questionsShow fewer questions
What services does Dr. Charles F. Guardia III bill to Medicare?
In 2024, Dr. Guardia's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and office visit, established patient (99215).
What drugs does Dr. Charles F. Guardia III prescribe most?
In 2024 Medicare Part D data, Dr. Guardia's most prescribed drugs by claims were Gabapentin, Carbidopa-Levodopa and Levetiracetam.
Has Dr. Charles F. Guardia III received payments from drug or device companies?
CMS Open Payments shows $431 in general payments to Dr. Guardia from 12 companies from 2016 to 2022. The largest total came from ACADIA Pharmaceuticals Inc.
How long has Dr. Charles F. Guardia III been practicing?
Dr. Guardia graduated from medical school in 2008, 18 years ago.
Does Dr. Charles F. Guardia III do research?
Dmand AI links 1 publication to Dr. Guardia.
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