Dr. Robert Patrick Williamson, MD
- Medicare services, 2020
- 154
- Part D claims, 2024
- 15
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 1 Boston Medical Center Place, Boston, MA 02118
- Practice phone
- Call (617) 638-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Williamson'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. Robert Patrick Williamson is an internist in Boston, Massachusetts
Dr. Williamson practices at Boston Medical Center in Boston, Massachusetts, part of Boston Medical Center Health System.
Dr. Williamson's NPI, 1821068305, was assigned on January 25, 2006. Dr. Williamson holds Massachusetts license 51661.
- NPI
- 1821068305NPI Registry (opens in a new tab)
- NPI enumeration date
- January 25, 2006
- NPI status
- Active
- Practice phone
- (617) 638-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Robert Patrick Williamson practices at Boston Medical Center in Boston, Massachusetts
Dr. Williamson's primary practice is Boston Medical Center, at 1 Boston Medical Center Place, Boston, MA 02118 in Suffolk County. The practice phone is (617) 638-8000.
- Boston Medical Center1 Boston Medical Center Place, Boston, MA 02118 · Suffolk CountyPhone(617) 638-8000
Source: Dmand AI Affiliation Data
Dr. Robert Patrick Williamson is affiliated with 1 site of care and 1 medical group
Dr. Williamson's primary practice is Boston Medical Center in Boston, Massachusetts, part of Boston Medical Center Health System. Dmand AI also links Dr. Williamson to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert Patrick Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williamson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Boston Medical Center | Available with a free account |
| +1 medical group | 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 Boston Medical Center Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Robert Patrick Williamson is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Williamson's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Williamson is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Williamson
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. Robert Patrick Williamson billed Medicare for 154 services in 2020
CMS data shows 154 Medicare services from Dr. Williamson across 4 procedure codes in 2020, all of them office visits. Medicare paid $7,205 for them. Every service was in an office.
Dr. Williamson's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 3442020: 15455%
Dr. Williamson compared with the Massachusetts median for internists, 2020
- Dr. Williamson
- Massachusetts median
- Medicare services
- 154vs 43164% below
- Part D claims
- 12vs 40297% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Williamson's most billed Medicare procedure codes, 2020
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. Williamson and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Patrick Williamson's patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Williamson's median patient age at 50, with 57% women.
Dr. 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 50
Patient panel by sex, all payers
- Women57%
- Men42%
Source: Dmand AI Patient Panel Data
Dr. Robert Patrick Williamson wrote 15 Medicare Part D claims in 2024
In 2024, Dr. Williamson wrote 15 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $11,188 in total drug cost. In 2021, CMS named 11 claims across 1 drug.
Dr. Williamson's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 112022: 129%
Drugs named by CMS: 1 in 2022, 1 in 2021.
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
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.
Sources for Dr. Robert Patrick 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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 Data |
| 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) |
| 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. Robert Patrick 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 Dr. Robert Patrick Williamson's NPI number?
Dr. Robert Patrick Williamson's NPI number is 1821068305. It was assigned on January 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Patrick Williamson?
Dr. Robert Patrick Williamson is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Robert Patrick Williamson practice?
Dr. Williamson practices at 1 Boston Medical Center Place, Boston, MA 02118. Dr. Williamson's primary practice is Boston Medical Center in Boston, Massachusetts, part of Boston Medical Center Health System. Dmand AI also links Dr. Williamson to 1 medical group.
What is Dr. Robert Patrick Williamson's office phone number?
The practice phone on file for Dr. Williamson is (617) 638-8000.
What is Dr. Robert Patrick Williamson's medical license number?
Dr. Williamson holds Massachusetts license 51661.
Which hospitals is Dr. Robert Patrick Williamson affiliated with?
Dr. Williamson practices at Boston Medical Center in Boston, Massachusetts.
Does Dr. Robert Patrick Williamson accept Medicare?
Yes. CMS data shows Dr. Williamson billed Medicare for 154 services in 2020.
What services does Dr. Robert Patrick Williamson bill to Medicare?
In 2020, Dr. Williamson's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99203).
What drugs does Dr. Robert Patrick Williamson prescribe most?
In 2022 Medicare Part D data, Dr. Williamson's most prescribed drugs by claims were Trulicity.
How long has Dr. Robert Patrick Williamson been practicing?
Dr. Williamson's NPI was assigned in 2006.
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