Dr. Erin D. Thomas, MD
- Medicare services, 2023
- 97
- Part D claims, 2024
- 229
- Hospital affiliations
- 2
- Medical groups
- 2
- State license
- 1
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Thomas' 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. Erin D. Thomas is an internist in Mendon, Massachusetts
Dr. Thomas practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Thomas' NPI, 1922561893, was assigned on April 9, 2019. Dr. Thomas holds Massachusetts license 291199.
- NPI
- 1922561893NPI Registry (opens in a new tab)
- NPI enumeration date
- April 9, 2019
- NPI status
- Active
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Erin D. Thomas practices in Boston and Mendon
Dr. Thomas' primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000. The NPI Registry lists Dr. Thomas' practice address as 55 North Ave, Mendon, MA 01756.
- Massachusetts General HospitalPrimary55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
- NPI Registry address55 North Ave, Mendon, MA 01756 · Worcester CountyPhone(508) 856-1886
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Erin D. Thomas is affiliated with 2 sites of care and 2 medical groups
Dr. Thomas' primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Thomas is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Thomas to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Erin D. Thomas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thomas practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Erin D. Thomas is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Thomas' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Thomas is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Thomas
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. Erin D. Thomas billed Medicare for 97 services in 2023
CMS data shows 97 Medicare services from Dr. Thomas across 2 procedure codes in 2023. Medicare paid $10,176 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Thomas' Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 632023: 9754%
Dr. Thomas compared with the Massachusetts median for internists, 2023
- Dr. Thomas
- Massachusetts median
- Medicare services
- 97vs 43177% below
- Part D claims
- 138vs 40266% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Thomas' most billed Medicare procedure codes, 2023
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. Thomas and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Erin D. Thomas' patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Thomas' median patient age at 67, with 50% women.
Dr. Thomas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Erin D. Thomas wrote 229 Medicare Part D claims in 2024
In 2024, Dr. Thomas wrote 229 Medicare Part D claims for 44 patients. 68% of them were for generic drugs. CMS names the drug for 138 of them, across 9 drugs with 11 or more claims each, at $645,697 in total drug cost. In 2022, CMS named 45 claims across 4 drugs.
Dr. Thomas' Part D claims by kind of drug, 2024
- Generic156 claims68%
- Brand-name73 claims32%
Dr. Thomas' 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, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 452024: 138207%
Drugs named by CMS: 9 in 2024, 4 in 2022.
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
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Sources for Dr. Erin D. Thomas'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand 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. Erin D. Thomas
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. Erin D. Thomas' NPI number?
Dr. Erin D. Thomas' NPI number is 1922561893. It was assigned on April 9, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Erin D. Thomas?
Dr. Erin D. Thomas is an internist in Mendon, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Erin D. Thomas practice?
Dr. Thomas practices at 55 Fruit Street, Boston, MA 02114. Dr. Thomas also practices at 55 North Ave, Mendon, MA 01756. Dr. Thomas' primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Thomas to 1 medical group.
What is Dr. Erin D. Thomas' office phone number?
The practice phone on file for Dr. Thomas is (617) 726-2000.
What is Dr. Erin D. Thomas' medical license number?
Dr. Thomas holds Massachusetts license 291199.
Which hospitals is Dr. Erin D. Thomas affiliated with?
Dr. Thomas practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Thomas is also affiliated with UMass Memorial Medical Center - University Campus.
What medical group is Dr. Erin D. Thomas part of?
Dr. Thomas is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Thomas to 1 more medical group.
Does Dr. Erin D. Thomas accept Medicare?
Yes. CMS data shows Dr. Thomas billed Medicare for 97 services in 2023.
What services does Dr. Erin D. Thomas bill to Medicare?
In 2023, Dr. Thomas' most billed Medicare services were hospital inpatient care (99232) and hospital inpatient care (99223).
What drugs does Dr. Erin D. Thomas prescribe most?
In 2024 Medicare Part D data, Dr. Thomas' most prescribed drugs by claims were Prochlorperazine Maleate, Enoxaparin Sodium and Dexamethasone.
How long has Dr. Erin D. Thomas been practicing?
Dr. Thomas graduated from medical school in 2019, 7 years ago.
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