Dr. Charles De Guzman, MD
- Part D claims, 2024
- 125
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2022
- Practice address
- 1493 Cambridge Street, Cambridge, MA 02139
- Practice phone
- Call (617) 665-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. De Guzman'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. Charles De Guzman is an internist in Cambridge, Massachusetts
Dr. De Guzman practices at CHA Cambridge Hospital in Cambridge, Massachusetts, part of Cambridge Health Alliance.
Dr. De Guzman's NPI, 1134878705, was assigned on March 21, 2022. Dr. De Guzman graduated from Loma Linda University School of Medicine in 2022. Dr. De Guzman holds Massachusetts license 1022888.
- NPI
- 1134878705NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355724089
- NPI enumeration date
- March 21, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 665-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 30
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles De Guzman practices at CHA Cambridge Hospital in Cambridge, Massachusetts
Dr. De Guzman's primary practice is CHA Cambridge Hospital, at 1493 Cambridge Street, Cambridge, MA 02139 in Middlesex County. The practice phone is (617) 665-1000.
- CHA Cambridge Hospital1493 Cambridge Street, Cambridge, MA 02139 · Middlesex CountyPhone(617) 665-1000
Source: Dmand AI Affiliation Data
Dr. Charles De Guzman is affiliated with 1 site of care and 1 medical group
Dr. De Guzman's primary practice is CHA Cambridge Hospital in Cambridge, Massachusetts, part of Cambridge Health Alliance. The medical group on file is Cambridge Health Alliance. Dr. De Guzman's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Charles De Guzman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. De Guzman practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CHA Cambridge Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Cambridge Health Alliance and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Charles De Guzman is one of 5,528 internists in Massachusetts
Internal medicine is Dr. De Guzman's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. De Guzman is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. De Guzman
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. Charles De Guzman's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. De Guzman's median patient age at 66, with 49% women.
Dr. De Guzman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women49%
- Men51%
Source: Dmand AI Patient Panel Data
Dr. Charles De Guzman wrote 125 Medicare Part D claims in 2024
In 2024, Dr. De Guzman wrote 125 Medicare Part D claims for 25 patients. 90% of them were for generic drugs.
Dr. De Guzman's Part D claims by kind of drug, 2024
- Generic112 claims90%
- Brand-name13 claims10%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Charles De Guzman takes part in Medicare
Dr. De Guzman 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Charles De Guzman graduated from Loma Linda University School of Medicine
Dr. De Guzman graduated from Loma Linda University School of Medicine in 2022.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Charles De Guzman'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | 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) |
| 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 Dr. Charles De Guzman
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 De Guzman's NPI number?
Dr. Charles De Guzman's NPI number is 1134878705. It was assigned on March 21, 2022, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles De Guzman?
Dr. Charles De Guzman is an internist in Cambridge, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Charles De Guzman practice?
Dr. De Guzman practices at 1493 Cambridge Street, Cambridge, MA 02139. Dr. De Guzman's primary practice is CHA Cambridge Hospital in Cambridge, Massachusetts, part of Cambridge Health Alliance.
What is Dr. Charles De Guzman's office phone number?
The practice phone on file for Dr. De Guzman is (617) 665-1000.
What is Dr. Charles De Guzman's medical license number?
Dr. De Guzman holds Massachusetts license 1022888.
Which hospitals is Dr. Charles De Guzman affiliated with?
Dr. De Guzman practices at CHA Cambridge Hospital in Cambridge, Massachusetts.
What medical group is Dr. Charles De Guzman part of?
Dr. De Guzman is linked to Cambridge Health Alliance.
Does Dr. Charles De Guzman accept Medicare?
Yes. CMS lists Dr. De Guzman as accepting Medicare assignment.
Where did Dr. Charles De Guzman go to medical school?
Dr. De Guzman graduated from Loma Linda University School of Medicine in 2022.
How long has Dr. Charles De Guzman been practicing?
Dr. De Guzman graduated from medical school in 2022, 4 years ago.
Selling to internal medicine practices?
See internists in Massachusetts 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